Thundercats

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(ended 1989)

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Episode Guide

    • 12/16/85
      9.7
      Finally, to prove that Lion-O is worthy to be the Lord of the Thundercats, he must defeat his worst enemy. Mumm-Ra. He manages to find a way into Mumm-Ra's tomb, and defeats him by throwing his coffin into the evil cauldrum. This is the first time that Lion-O really defeats Mumm-Ra.moreless
    • Excalibur
      Season 1 - Episode 51
      12/2/85
      9.5
      The Ancient spirits of evil show Mumm-Ra the story of King Arthur, and explain to him that the strongest sword that ever existed was Excalibur, Arthur's weapon. Mumm-Ra disguises himself as Arthur, and returns to the lake where the sword is guarded by The Lady of the Lake. Fooled by his disguise, The Lady gives Mumm-Ra Excalibur. The disguised Mumm-Ra challenges Lion-O to a dual, and Lion-O foolishly accepts the challenge. The swords clash, and Excalibur is victorious. The eye of Thundera is split in two, and the Thundercats become powerless. Merlin, Arthur's teacher and a famous magician stops Mumm-Ra from destroying the Thundercats, and restores the eye to its original state.moreless
    • Mumm-Ra Lives (2)
      Season 2 - Episode 7
      9/16/86
      9.4
      The Lunataks have been freed by the mutants. Mumm-Ra joins forces with them to destroy the Thundercats, and after doing so, they would rule third earth together. The Lunataks meet the Thundercats in battle, and prove to be much stronger than them. In fact, Tugg-Mugg, one of the Lunataks manages to break the sword of omens in half. Bengali however manages to reforge it since he is a Thundarian Blacksmith.moreless
    • Mumm-Ra Lives (1)
      Season 2 - Episode 6
      9/15/86
      9.4
      The Thundercats think that they have destroyed Mumm-Ra for good. Little do they know that he survived. He returns to his tomb with the help of Ma-Mutt, and is to weak to do anything. So he transforms Ma-Mutt into an image of himself, and sends this image to order the mutants to release the Lunataks.moreless
    • ThunderCubs (2)
      Season 3 - Episode 2
      9/6/88
      9.4

      Lion-O and the other Thundercats arrive and save Lynx-o and the Thunderkittens from Red Eye and Tug Mug. The Thundercats learn more about New Thundera, especially the dangerous places affected by the moons of Plundarr where the Lunataks come from. The Thundercats must develop special equipment and clothing to counter those dangers. Also, they learn that all the snarfs have been turned into slaves and Snarf and Snarfer want to rescue them no matter what the cost. Vultureman learns of the Thundercats plan, so he abandons the other Mutants and takes the Rat-Star. But Slithe has snuck aboard. Right after the Feliner takes off, the Rat-star ambushes them and it seems all over for the Thundercats aboard the Feliner. Lion-O uses the sword to free everyone and along with Ben-Gali and Wilykit on the HoverCat, go after the Ratstar and it crashes on Hook Mt. The Thundercats leave Third Earth's atmosphere and Lynx-O tells him that Mumm-Ra has already located the Sword of Plundarr.

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    • 11/19/85
      9.3
      On the second day of his trails, he must race Cheetara through the dangerous lands of third earth. Although Cheetara is by far the fastest among the Thundercats, her speed can only last for a short time period. After that, she can run as fast as any other individual. Lion-O takes a shorter, but more dangerous route to make up for Cheetara's advantage.moreless
    • The Mountain
      Season 1 - Episode 58
      12/11/85
      9.2
      Lion-O takes up mountain climbing, but during one of his climbs, The Mutants attack him with a Thundrainium gun, Lion-O calls the other Thundercats, but an avalanche traps Panthro, Tygra, Slithe and Monkian, in a cave causing a limited air supply. Meanwhile Jackalman steals the sword, but Lion-O manages to get it back and saves everyone.moreless
    • The Mumm-Ra Berbil
      Season 1 - Episode 47
      11/26/85
      9.2
      Mumm-ra transforms himself into a ro-bear berbil (a Thundercat ally). He acts hurt and the Thundercats let him stay at their Lair. One night, Mumm-ra(the berbil) puts all the Thundercats under his spell, except Snarf, because Tygra held off Mumm-ra just long enough for Snarf to escape. Lion-O was sleeping out in the woods, and Snarf ran to him and told him what happened. Lion-O came back and fought Mumm-ra, who was actually beating Lion-O. Mumm-ra was wearing special glasses so he couldn't see his reflection. Eventually, Lion-O used the Thundercat signal, broke Mumm-ra's spell and his glasses, and finally defeated him with his reflection.moreless
    • Safari Joe
      Season 1 - Episode 24
      10/10/85
      9.2
      An evil hunter lands on third earth in search of prey to hunt. His holographic machine can tell him about all of the Thundercats, including their strengths and weaknesses, and he is able to hunt down each one of them and put them in Thundrainium cells. He captures all of them but Lion-O and Snarf. Jaga warns Lion-O about Safari Joe before he sets out to save his comrads, and Lion-O is able to defeat him and release his friends.moreless
    • ThunderCats Ho! (5)
      Season 2 - Episode 5
      9/10/86
      9.2
      Lion-O wakes up from an awful nightmare he has been having about leaving Thundera. He remembers leaving some of his fellow Thunderians on Thundera because the ship could not stay any longer. Jaga appears to him and explains that they did not perish, and that they are on third earth. Anxious to find them, Lion-O asks Cheetara to use her psychic powers to find their location. Mumm-Ra, overhearing this news, send the Berserkers to capture the Thunderians, and bring them to him. He captures them, and has them sent to Fire Rock mountain (otherwise known to the thundercats as thundrainium). Weakened by the thundrainium, the thunderians are hopeless. Lion-O, unable to get past the thunrainium to save them uses the power of the star of thundera to cancel the effects of the thundrainium. Mumm-ra sends Grune to stop Jaga from getting the power of the star for Lion-O, but Grune fails. After giving the stars power to Lion-O, Mumm-Ra manages to steal it from him. Mumm-Ra, trying to possess the stars powers, instead gets destroyed by the stars power. Lion-O saves the thunderians, and anoints them as Thundercats. Bengali, the white tiger, Pumira, the female puma, and Lynxo the blind lynx.moreless
    • The Unholy Alliance
      Season 1 - Episode 2
      1/23/85
      9.2
      While the Thundercats try to salvage what they can from their ship, the Mutants scan the planet for a place to build a fortress. Instead, they find the home of Mumm-Ra, the ever-living.
    • Mumm-Ra Lives (3)
      Season 2 - Episode 8
      9/17/86
      9.2
      The Lunatacks build their fortress with the help of the brute men. They call it Sky Tomb, and not only is it powerful, but it can travel through the air. It is a mobile fortress. The Thundercats ask the Berbils to help them build a new structure called the Tower of Omens, that would help them easily locate the position of Sky Tomb, and stop the Lunatacks as fast as possible.moreless
    • The Ghost Warrior
      Season 1 - Episode 11
      9/23/85
      9.1
      Two Bolkins (sheep-like beings from Third Earth) unleash the ghost of Grune the Destroyer, a renegade Thundercat who once terrorised Third Earth and now turns his attention to the Thundercats.
    • Exodus
      Season 1 - Episode 1
      1/23/85
      9.1
      With their home planet, Thundera, about to explode, the Thunderians flee to a distant galaxy. Before they can make the long journey the Mutants sweep in and destroy most of the fleet in an attempt to capture the Eye of Thundera, and a battle ensues.
    • The Fireballs of Plun-Darr
      Season 1 - Episode 16
      9/30/85
      9.1
      The mutants, once again searching for a way to destroy the Thundercats, recover some more items from their spaceship which Mumm-Ra generously recovered for them. They take their ships engine and convert it into a giant fire-ball-shooting machine. The mutants terrorize third earth with their fire-balls, until the Thundercats go to castle Plun-Darr and destroy their dangerous new weapon.moreless
    • The Mossland Monster
      Season 4 - Episode 13
      9/20/89
      9.1

      Tygra, on a solo trip to New Thundera to meet the other Thundercats, decides to take a shortcut through a meteor shower. His ship is damaged, and he lands on an unexplored region of New Thundera. The Moss-Land. It turns out that the moss in moss-land is part of a giant monster who captures Tygra with its moss. Lion-O and Panthro set out to save Tygra and battle the Moss Monster.

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    • All That Glitters
      Season 1 - Episode 17
      10/1/85
      9.1
      Mumm-Ra tricks Lion-O into using the Sword of Omens against Tygra, causing the blade to break in half and lose its powers. The only way Lion-O can restore the Sword is to venture into a volcano and have the Inflamer reforge it. But the Inflamer requires a payment of gold . . . Has Lion-O taken on more than he can handle?moreless
    • Time Switch
      Season 2 - Episode 17
      9/30/86
      9.1
      While burying one of the time capsules that transported the Thundercats to Third Earth, it smashes apart and Lion-O gets caught in its gases, making him younger and younger by the minute. The other Thundercats must find a way to reverse the process and realize the Cave of Time is the only way, but they must get Lion-O there before he "vanishes" from existence. Things get worse when the young Lion-O and Snarf are captured by the Lunataks.moreless
    • Spitting Image
      Season 1 - Episode 18
      10/2/85
      9.0
      Mumm-Ra creates a device that can make Panthro clones. He embeds the spirit of Hammerhand into his clone and sets it free to destroy Third Earth. The planet's inhabitants blame the Thundercats for the terror because they think its the real Panthro destroying their villages and burning their crops. The real Panthro finally encounters his clone and, with the help of Lion-O, manages to destroy it. Enraged about his defeat, Hammerhand destroys Mumm-Ra's cloning device.moreless
    • 11/25/85
      9.0
      Wilykit and Wilykat stand in Lion-O's way on the third day of his trials. Lion-O must beat them through the maze of infinity. Attempting to stop Lion-O and slow him down, the kids set traps in the maze. He manages however to avoid their traps. In order to beat them through the maze, Lion-O plays their own tricks on them, and tricks them into losing the race through the maze.moreless
    • ThunderCats Ho! (2)
      Season 2 - Episode 2
      9/10/86
      9.0
      Lion-O wakes up from an awful nightmare he has been having about leaving Thundera. He remembers leaving some of his fellow Thunderians on Thundera because the ship could not stay any longer. Jaga appears to him and explains that they did not perish, and that they are on third earth. Anxious to find them, Lion-O asks Cheetara to use her psychic powers to find their location. Mumm-Ra, overhearing this news, send the Berserkers to capture the Thunderians, and bring them to him. He captures them, and has them sent to Fire Rock mountain (otherwise known to the thundercats as thundrainium). Weakened by the thundrainium, the thunderians are hopeless. Lion-O, unable to get past the thunrainium to save them uses the power of the star of thundera to cancel the effects of the thundrainium. Mumm-ra sends Grune to stop Jaga from getting the power of the star for Lion-O, but Grune fails. After giving the stars power to Lion-O, Mumm-Ra manages to steal it from him. Mumm-Ra, trying to possess the stars powers, instead gets destroyed by the stars power. Lion-O saves the thunderians, and anoints them as Thundercats. Bengali, the white tiger, Pumira, the female puma, and Lynxo the blind lynx.moreless
    • Vultureman's Revenge
      Season 2 - Episode 25
      10/10/86
      9.0
      Vultureman creates a weapon that shoots pure Thundrainium in hopes of destroying the Thundercats. His first victims are the Thunderkittens who fall into a deep cavern and become injured. Lion-O and Snarf search for the missing kittens. Meanwhile Vultureman must get more Thundrainium from Chilla in Darkside and is also ordered by Slithe to fix the Mutants' machines. The Thunderkittens are saved by a Wollo and they discover that the Wollo village has been "iced" and they are captured and used as bait to lure Lion-O. When Lion-O and Snarf arrive, they are shot down by Vultureman's weapon and Lion-O becomes weak and summons the Thundercats. Just as Vultureman is about to finish off Lion-O, Ben-Gali arrives, wrecks Vultureman's weapon and drives the Mutants and Chilla away. Lion-O then uses the sword to restore the Wollo village.moreless
    • Mumm-Ra Lives (5)
      Season 2 - Episode 10
      9/19/86
      9.0
      Lion-O, Panthro, Tygra, and Pumyra set out to Darkside to free the slaves the Luna-tacks have imprisoned. In doing so, they get captured. Cheetara and Lynxo set out to Sky Tomb to save them. The Thundercats see Mumm-Ra for the first after his "death" time at Sky Tomb, and discover that he cannot be harmed by his own reflection anymore. The ancient spirits of evil have made him more powerful when they revived him. They Thundercats manage to escape, and leave the Luna-tacks fighting amongst themselves.moreless
    • Pumm-Ra
      Season 1 - Episode 5
      9/13/85
      9.0
      While out for her morning job, Cheetara is captured by the Mutants, as part of Mumm-Ra's larger plan to infiltrate Cats' Lair.
    • Mumm-Ra Lives (4)
      Season 2 - Episode 9
      9/18/86
      8.9
      Young Snarfer, Snarfs nephew, arives on third earth. His ship has gone off course though and landed in territory of the Luna-tacks. The Luna-tacks manage to capture Snarfer, and the Thundercats must venture into Darkside to save young Snarfer so he can work the Tower of Omens.
    • 11/12/85
      8.9
      On Lion-O's 20th birthday, he must pass a set of trials to become the true Lord of the Thundercats. Even though he is the hereditary Lord of the Thundercats, he has not proven himself to be worthy of that title. His first test is to beat Panthro in a dual to test his strength.moreless
    • ThunderCats Ho! (1)
      Season 2 - Episode 1
      9/10/86
      8.9
      Lion-O wakes up from an awful nightmare he has been having about leaving Thundera. He remembers leaving some of his fellow Thunderians on Thundera because the ship could not stay any longer. Jaga appears to him and explains that they did not perish, and that they are on third earth. Anxious to find them, Lion-O asks Cheetara to use her psychic powers to find their location. Mumm-Ra, overhearing this news, send the Berserkers to capture the Thunderians, and bring them to him. He captures them, and has them sent to Fire Rock mountain (otherwise known to the thundercats as thundrainium). Weakened by the thundrainium, the thunderians are hopeless. Lion-O, unable to get past the thunrainium to save them uses the power of the star of thundera to cancel the effects of the thundrainium. Mumm-ra sends Grune to stop Jaga from getting the power of the star for Lion-O, but Grune fails. After giving the stars power to Lion-O, Mumm-Ra manages to steal it from him. Mumm-Ra, trying to possess the stars powers, instead gets destroyed by the stars power. Lion-O saves the thunderians, and anoints them as Thundercats. Bengali, the white tiger, Pumira, the female puma, and Lynxo the blind lynx.moreless
    • Snarf Takes Up the Challenge
      Season 1 - Episode 25
      10/11/85
      8.9
      Nearly all the Thundercats have been captured by the Mutants and imprisoned in Mumm-Ra's Pyramid, forcing Snarf to use his own talents to free them.
    • The Trouble with Thunderkittens
      Season 1 - Episode 62
      12/17/85
      8.9
      The Thunderkittens steal the Thundercats' weapons so they can prove they can use them, but the Mutants steal the weapons! Lion-O and the kittens must get the weapons back from the Mutants.
    • The scene changes to Hook Mountain, where Lion-O must beat Tygra at a test of mind power. The Tiger Clan on Thundera were given special mind powers that enable them to produce illusions to their enemies. Lion-O must be able to distinctly separate the real from the unreal. Lion-O is clever enough to see past Tygra's illusions, and is able to earn his Thundercat insignia during day four of his trials.moreless
    • ThunderCubs (4)
      Season 3 - Episode 4
      9/8/88
      8.9

      Mumm-Ra tries to get away but the Sword of Omens breaks open the casket dropping the treasure all over the planet, and Snarf, Snarfer, and one other snarf escape. Mumm-Ra gives a false Book of Omens to Ma-Mutt, Slithe and Vultureman, who have arrived on New Thundera in the Rat-star, for safe keeping so that he can decipher the real Book of Omens. The Thundercats go after them through the Caverns of Cold. They head toward the Canyons of Youth, but due to the effects of the canyon, Panthro, Cheetara, Tygra, Snarf, and Snarfer are changed into Thundercubs. Lion-O must use the sword to give the Thundercubs Thundercat understanding. Meanwhile on Third Earth, Jackalman, Monkian, and the Lunataks attack Cats Lair and capture Ben-Gali and Wilykit. Lion-O learns that the Thundercats back on Third Earth are being held prisoner in Sky Tomb, so he decides to send the Thundercubs to Third Earth to rescue them while he tries to get the Book of Omens from Mumm-Ra. Snarf decides to stay with Lion-O and the other Thundercubs prepare the Feliner to leave New Thundera but Mumm-Ra arrives and attacks the Thundercubs.

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    • ThunderCubs (5)
      Season 3 - Episode 5
      9/9/88
      8.9

      Lion-O frees the Thundercubs from Mumm-Ra's spell and the Thundercubs safely leave New Thundera. Lion-O and Snarf must confront Mumm-Ra and get the Book of Omens. After they defeat Mumm-Ra, they ask Mu-Mutt (using a magical flute) to use Mumm-Ra's "device" to get them back to Third Earth. Meanwhile the Lunataks capture some Berbils and the Thundercubs return to Third Earth and they and the Thunderkittens must go to Sky Tomb to free the other Thundercats and the Berbils. After everyone is freed, they are all cornered by the Lunataks, but Lion-O and Snarf arrive to save the day. The Thundercubs must then go in the Cave of Time to become Thundercats again and Mumm-Ra is abandoned on New Thundera and the Ancient Spirits bring him back to Third Earth.

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    • The Tower of Traps
      Season 1 - Episode 8
      9/18/85
      8.9
      Wilykit and Wilykat try to stop a band of living gargoyles from robbing a Wollo but fail to do so and trail the gargoyles to a nearby Tower. Wilykat tries to force the door open when he suddenly disappears, leaving Wilykit - who was looking for another way in - close to panic. She and Lion-O (alerted by the Sword of Omens) must now brave the Tower's potentially lethal traps in order to rescue Wilykat.moreless
    • The Astral Prison
      Season 1 - Episode 22
      10/8/85
      8.8
      Jaga is captured by Nemex, an evil being in the Astral world, and Lion-O tries to find a way to rescue him. Third Earth legend says that the only person who can transport anyone to the Astral world is the evil Nether-Witch. Little do the Thundercats know that Mumm-Ra and the Nether-Witch are one and the same. Mumm-Ra traps Lion-O in the Astral world and Lion-O sets out to save Jaga. While escaping the Astral prison, Lion-O and Jaga save an old sorcerer named Brodo who has been imprisoned in the Astral Prison for centuries. As a gesture of thanks, Brodo sends Lion-O back to his own dimension.moreless
    • Dimension Doom
      Season 1 - Episode 33
      11/6/85
      8.8
      Wiz-Ra, Mum-Ra's enemy from long ago comes back every 7000 years through a portal that just happens to be in Cheetara's bedroom. Wiz-Ra wears on his head a magical helmet that lets him control minds. When the time arrives and Wiz-Ra comes through the portal, Mumm-Ra steals the helmet. Cheetarah helps Wiz-Ra get the helmet back and free the ThunderCats from its spell.moreless
    • Trouble with Time
      Season 1 - Episode 7
      9/17/85
      8.8
      The Mutants decide they need a woman around "the house" to take care of their needs. Meanwhile the Thundercats stumble upon the Cave of Time.
    • Berbils
      Season 1 - Episode 3
      9/11/85
      8.8

      While Lion-O is away scouting the area, Mumm-Ra launches a rock attack against the remaining Thundercats. Meanwhile, Lion-O has his own problems when he falls into a trap.

    • Mongor
      Season 1 - Episode 19
      10/3/85
      8.7
      Wilykit and Wilykat accidently free an ancient monster that was banished to an old shrine centuries ago. The evil monster Mongor begins to destroy the planet and is much stronger than the Thundercats. He captures all the elder Thundercats with his powers. Wilykit and Wilykat return to the shrine to find a way to destroy him. They report back to Lion-O and tell him that in order to destroy Mongor he has to fight the monster without looking at it. Lion-O defeats the monster and all is returned to normal.moreless
    • The Last Day
      Season 2 - Episode 45
      11/7/86
      8.7
      With the Mutants and Lunataks gone, the Ancient Spirits of Evil give Mumm-Ra until sunset to destroy all the Thundercats, and to prove they're not bluffing, they exile Ma-Mutt. Mumm-Ra spreads destruction all over Third Earth, sends Tygra, Cheetara, and Panthro to limbo, and buries Lion-O alive. Then he attacks and destroys the Tower of Omens, and the Thunderkittens barely escape, but Mumm-Ra sends them to limbo too. Snarf must go into the Book of Omens to find out how to defeat Mumm-Ra. Jaga and the Thundercats in limbo go into the Eye of Thundera to help Lion-O free himself from his rocky prison. Lion-O then battles Mumm-Ra at Cats Lair and finds out from Snarf that Mumm-Ra only has until sunset to defeat the Thundercats. Mumm-Ra fails and the Ancient Spirits of Evil banish and exile Mumm-Ra from Third Earth. With all their enemies gone, the Thundercats decide to permanently return to New Thunderamoreless
    • Leah
      Season 4 - Episode 6
      9/11/89
      8.7

      The Ancient Spirits of Evil bring the Mirror Rape to Mumm-Ra, and he disguises it as a child's toy. Mumm-Ra then intercepts a thunderian escape pod which carries in it a little girl. He gives the toy to the child (Leah), and leaves. She is rescued by the Thundercats, and goes into New Cat's Lair with the doll. The doll turns into the Mirror Rape when left alone, and begins to destroy Cat's Lair, and the Thundercats have no clue where the evil Mirror Rape came from.

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    • Ravage Island
      Season 2 - Episode 16
      9/29/86
      8.7
      Mumm-Ra uses the Beacon of Ravage Island to make the Thundercats his slaves. When the beacon puts Lion-O, Panthro, Cheetara, and Pumyra under its power, they are easily captured by the Mutants, and Snarf must get the others at the tower for help, but Ben-Gali soon falls under the beacon's power and it's up to Lynx-O, Snarf and Snarfer, to save the "enslaved" Thundercats.moreless
    • Runaways
      Season 2 - Episode 23
      10/8/86
      8.7
      Bored and feeling that they are no longer needed, the Thunderkittens run away from home, but soon run into problems when they become ill from berries they had picked. A creature known as Cudi saves their lives. When the other Thundercats find them, the Thunderkittens invite Cudi to Cats Lair. But Mumm-Ra has been observing the situation and disguises himself as Cudi to gain entrance to the Lair. Many disasters occur and the blame is put on the false Cudi, who traps the Thundercats in the council chamber. The Thundercats realize it's Mumm-Ra and they manage to escape and defeat him.moreless
    • Eye of the Beholder
      Season 1 - Episode 60
      12/13/85
      8.6
      Panthro makes a fake sword of omens, and they plan to play a joke on the Mutants! But the joke backfires when the Mutants capture Snarf too! Lion-O must rescue Snarf and defeat the Mutants and Mumm-Ra once again.
    • Crystal Canyon
      Season 2 - Episode 33
      10/22/86
      8.6
      Lion-O, Lynx-O, Snarf and Tygra go to the Crystal Canyon, thinking the Lunataks somehow got the Treasure of Thundera. While there, they encounter Aluro and Chilla. The two Lunataks trick the Thundercats by confusing them using with their reflections. They knock out the Thunderstrike and cause it to crash. Lynx-O is seriously injured and Lion-O is knocked unconscious. Tygra and Snarf find the Keystone and when Tygra holds the Keystone, he becomes convinced that it is making him more powerful. He uses it to restore the Thunderstrike, and heal Lion-O and Lynx-O. They return to the Lair and the other 3 Thundercats learn Tygra has become seriously addicted to the Keystone. When they try to tell Tygra he's become a slave to the Keystone, he doesn't believe them. Later in a battle against Aluro, Tygra thinks he's invincible, but Aluro proves him wrong and takes the Keystone from Tygra. Then Aluro himself becomes addicted to the Keystone. Aluro captures Lion-O and Lynx-O forcing them to come with him back to Sky Tomb. Lion-O uses the sword to summon the Thundercats and Tygra is restored back to normal and defeats Aluro.moreless
    • Ma-Mutt's Confusion
      Season 4 - Episode 14
      9/21/89
      8.6

      Mumm-Ra has a new device, the Babylonian Barbarian Boiler, that he plans to use on Cats Lair. Ma-Mutt fools around too much and Mumm-Ra banishes him from the Pyramid. Later, the Thunderkittens, Snarf, and Snarfer bring Ma-Mutt back to Cats Lair and then Mumm-Ra fires the Boiler's beam at the Lair, which causes it to start melting. Snarfer makes a communicating device (because Ma-Mutt was trying to tell them about the beam), so they can understand Ma-Mutt. Ma-Mutt starts telling them of the Boiler, but Mumm-Ra sees this and through the Cauldron's magic brings Ma-Mutt back to the Pyramid. Then the ThunderCats construct a giant Light-Shield and use it to protect the Lair, but Mumm-Ra just boosts the power on the Boiler, destroying the Shield. Lion-O uses the Cat Signal to push back the beam, which causes the Boiler to explode, and the Signal restores Cats Lair. Mumm-Ra, who was lonely without Ma-Mutt, welcomes his dog back to the pyramid

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    • Return to Thundera
      Season 1 - Episode 20
      10/4/85
      8.6
      The Thundercats briefly show Lion-O how the time capsule they recovered from the caveman works. Curious to see more, Lion-O activates it during his night-time watch, and gets caught in it nuclear projection rays. The rays send him back in time to Thundera, just before the final tremor that destroyed the planet. Meanwhile, the mutants have built an evil robot monster that is destroying the cats lair, and the other Thundercats. Back on Thundera, Lion-O encounters his father, Claudus, and saves him from a mutant attack. In return, Claudus gives Lion-O the plans to the robot that was destroying the Thundercats in his own time.moreless
    • Mumm-Rana's Belt
      Season 2 - Episode 21
      10/6/86
      8.6
      After overhearing Snarf telling the Thunderkittens and Pumyra a story about Mumm-Rana's magic belt and Queen Luna (Luna's grandmother), Luna and Amuk journey to the white pyramid and take Mumm-Rana's belt, destroying her pyramid in the process. Pumyra tries to stop her but she gets sealed up in the pyramid. Amuk becomes jealous when Luna no longer needs him and during his "little temper", he accidently frees Pumyra. Then Luna forces Slithe and Monkian to help her ambush Lion-O and Panthro. During the battle with "Princess" Luna, Lion-O uses the sword to restore Mumm-Rana and she retakes the belt and defeats Luna. Amuk later arrives and destroys the belt.moreless
    • The Superpower Potion
      Season 1 - Episode 59
      12/12/85
      8.6
      Vultureman invents a potion that turns him into the most powerful being on Third Earth. He becomes so powerful that he even challenges Mumm-Ra's power and wins. He becomes so powerful that if the Thundercats don't stop him, he *will* be the supreme ruler of Third Earth. Luckily, the mutants fight over the super power potion, and end up destroying the vile.moreless
    • Catfight
      Season 2 - Episode 11
      9/22/86
      8.6
      Mumm-Ra plays deception with the Thundercats when he (disguised as Jaga) tells Lion-O that the Thundercats at the Tower of Omens will rebel and take Third Earth for themselves. Then he disguises himself as a Tuska warrior and asks the Thundercats at the tower for help. Ben-Gali, Pumyra, and Snarfer go to investigate while Lynx-O calls on the others to help, but Lion-O warns the others of their possible treachery, but Panthro, Cheetara, and Snarf go anyway but somewhat cautious. When they meet, the Tuska warrior "accidentally" causes the newer Thundercats to attack. He then disappears and the Thundercats start fighting each other. Meanwhile the Lunataks invade Cats Lair and the Tower of Omens. Lion-O must call on the Thundercats hoping they'll stop fighting each other to defeat the Lunataks and Mumm-Ra, which they do.moreless
    • Feliner (2)
      Season 1 - Episode 30
      11/1/85
      8.6
      Vultureman summons Ratar-O to take him to the planet of the Snarfs to capture one of them and use it as ransom with the Thundercats. Snarf (Osbert J), thinking his entire race was wiped out when Thundera blew up finds out that they have captured Snarfer, his little nephew. The Thundercats set out to find the mutants and save Snarfer. After successfully saving Snarfer, the Thundercats are faced with the problem of returning Snarfer to his planet. Panthro cleverly invents the Feliner, the first Thundercat air-ship. In order for it to work though, the machine need a hyperspace mega-condenser. Snarf reminds him that there is one on Ratar-O's Ratstar. The Thundercats once again persue the mutants to the wreckage site of the Ratstar to "take" their mega-condensor.moreless
    • ThunderCats Ho! (3)
      Season 2 - Episode 3
      9/10/86
      8.6
      Lion-O wakes up from an awful nightmare he has been having about leaving Thundera. He remembers leaving some of his fellow Thunderians on Thundera because the ship could not stay any longer. Jaga appears to him and explains that they did not perish, and that they are on third earth. Anxious to find them, Lion-O asks Cheetara to use her psychic powers to find their location. Mumm-Ra, overhearing this news, send the Berserkers to capture the Thunderians, and bring them to him. He captures them, and has them sent to Fire Rock mountain (otherwise known to the thundercats as thundrainium). Weakened by the thundrainium, the thunderians are hopeless. Lion-O, unable to get past the thunrainium to save them uses the power of the star of thundera to cancel the effects of the thundrainium. Mumm-ra sends Grune to stop Jaga from getting the power of the star for Lion-O, but Grune fails. After giving the stars power to Lion-O, Mumm-Ra manages to steal it from him. Mumm-Ra, trying to possess the stars powers, instead gets destroyed by the stars power. Lion-O saves the thunderians, and anoints them as Thundercats. Bengali, the white tiger, Pumira, the female puma, and Lynxo the blind lynx.moreless
    • The Garden of Delights
      Season 1 - Episode 9
      9/19/85
      8.6
      While investigating an earthquake, Tygra stumbles across the Garden of Delights and meets a talking plant named Silky, who offers him her fruit. But it turns out that "Silky" was another of Mumm-Ra's disguises and eating the fruit seems to have affected Tygra's mind.
    • The Mask of Gorgon
      Season 2 - Episode 13
      9/24/86
      8.5
      Mumm-Ra plans on using the legendary Mask of Gargon to free a sleeping child in the hills of Elfshima to use against the Thundercats. When Chilla and Tug Mug fail to get the mask because it turned them to stone, Mumm-Ra summons it and decides he needs the Eye of Thundera so that the mask can use sight beyond sight to awaken the giant child. Lynx-O warns the Thundercats of the mask and the sleeping child, but Lion-O, Panthro, and Willa still go to the pyramid, but are turned to stone by the mask. Mumm-Ra then uses the Eye of Thundera and the mask to awaken the giant. But Lynx-O and Ben-Gali in the Thunderstrike defeat the giant and the mask gets smashed apart restoring everyone who had been turned to stone, and the Eye of Thundera burns the book that contained the mask's terrible secrets.moreless
    • Chain of Loyalty
      Season 2 - Episode 32
      10/21/86
      8.5
      After looking at the Book of Omens, and seeing a picture of a necklace, Lion-O discovers that there are pictures of the Thundercats on the necklace. Jaga appears to Lion-O and tells him that he is looking at a picture of the Chain of Loyalty. Jaga tells Lion-O that if the chain gets broken, it would cause the Thundercats to turn against each other. In hearing this, Lion-O and the Thundercats (Panthro, Tygra, Cheetara, and the Thunderkittens) set off to Thundera to find the chain. Mumm-ra, eavesdropping on Lion-O through his pool at the pyramid, goes to Thundera, kidnaps and disguises himself as Snarf. When the Thundercats arrive, they split up into groups to find the chain, and Mumm-Ra goes with Lion-O and the Thunderkittens. Lion-O's group finds the chain and Mumm-Ra gets it, breaks it, and returns to his true form. For a while, the Thundercats, except Lion-O, fight against each other until Lion-O uses the sword of Omens, which magically puts the necklace back together. Mumm-ra is defeated and the Thundercats return to Third Earth.moreless
    • Trapped
      Season 1 - Episode 49
      11/28/85
      8.5
      When a big storm hits Third Earth, the Thunderkittens are trapped in an old space capsule. Meanwhile, Tygra and Cheetara almost crash the Feliner, but Lion-O guides them in for a safe landing with the eye of Thundera. The kittens are captured by Mumm-ra, but end up saving the day by showing him his reflection in the window of the capsule.moreless
    • The Telepathy Beam
      Season 2 - Episode 34
      10/23/86
      8.5
      Vultureman creates a device that plays around with Cheetara's sixth sense. She begins to see images that aren't real, and she soon begins to lose faith in herself. Meanwhile, the Lunataks enslave Panthro with a mind control device, and tell him to make the Sky-Tomb able to fly to Thundera. When the Thundercats are looking for Panthro, Vultureman makes Cheetara see images of him being captured by Mumm-Ra, being stuck on Hook Mt., and being held at Castle Plundarr. Lion-O goes to Mumm-Ra's pyramid, and is ambushed by Luna and Amok, who capture him. Tygra goes to Plundarr and is captured by Red Eye. The Thunderkittens also get captured on Hook Mountain. Cheetara is about to go crazy, but Lynx-O tells her to listen to her heart instead of her mind. She turns into a huge ball of energy that shoots out and destroys Vultureman's device and frees Panthro and the other Thundercats.moreless
    • The Time Capsule
      Season 1 - Episode 15
      9/27/85
      8.5
      Lion-O becomes homesick, and his memories of Thundera are almost nonexistent. Jaga appears to Lion-O and tells him that on their spaceship, they brought with them a time capsule which was basically a digital recording of Thundera, and its history up to the time it was destroyed. The Thundercats set out to search for their time capsule.moreless
    • The Slaves of Castle Plun-Darr
      Season 1 - Episode 4
      9/12/85
      8.5
      While playing in the forest, Wilykit and Wilykat discover that the Mutants have enslaved the Brutemen. Using this slave labour, the Mutants have built Castle Plun-Darr.
    • Lord of the Snows
      Season 1 - Episode 13
      9/25/85
      8.5
      When a meteorite made of pure Thundrillium crashes on Hook Mountain, the Thundercats decide to use it to replenish their depleted energy supply. But Lion-O must first gain the trust of the fierce Snowman.
    • ThunderCubs (1)
      Season 3 - Episode 1
      9/5/88
      8.5

      Mumm-Ra learns about the Treasure of Thundera and the Sword of Plundarr (Jaga had beaten Ratilla, who owned the Sword, and then buried the sword deep underground), and he and Ma-Mutt "travel back in time and space" to explore the debris of Thundera and look for the sword, which causes the planet to reform. The Thundercats find out about this and must make the journey to New Thundera to stop Mumm-Ra. Lynx-O and the Thunderkittens are left at the tower while the other Thundercats at the Lair are preparing the Feliner for the trip to New Thundera. Vultureman notices that the tower is only guarded by 3 Thundercats and goes to Sky Tomb and tells Luna. Luna then sends Red Eye and Tug Mug to attack the Tower, and they capture Lynx-O and the Thunderkittens.

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    • Hachiman's Honor
      Season 2 - Episode 22
      10/7/86
      8.5
      Hachiman rescues an old woman not knowing it's Luna. She "invites" him to her "cave" and there she and Chilla and Aluro attack him and take his sword, the Thundercutter. The Thunderkittens find Hachiman and rescue him. The Lunataks plan to use the Thundercutter with their new samurai robot, Automaton, to fight Lion-O and the Sword of Omens. The Thundercutter can't tell who's good and who's evil in the fight but when Hachiman touches the sword, the Thundercutter destroys the robot.moreless
    • Return to Thundera (5)
      Season 4 - Episode 5
      9/8/89
      8.5

      After another earthquake caused by Mumm-Ra ruins the new Cats Lair construction site, the Thundercats go to see Jaguara and confront Mumm-Ra. Unfortunately, Mumm-Ra puts up a force field over entrance. Jaga appears to Lion-O and tells him to use the Eye of Thundera to get to Jaguara and the Gyroscope. Lion-O does so and battles Mumm-Ra, who throws him into the bottomless pit underneath the Gyroscope. Lion-O however, manages to throw his grappling hook to the top, which pulls him back up. Lion-O then shines the signal, which goes through the force field. All the Thundercats leap through the signal which takes them through the force field. Together, they fire all their weapons at Mumm-Ra and he is defeated. But before he leaves, he breaks the cord that holds the Gyroscope above the pit and it falls through. Now, New Thundera is literally falling apart. But Lion-O throws the sword in the spot where the Gyroscope used to be and calls upon the Thundercat Ancestors for help. The sword starts spinning and creates a new Gyroscope, thus the planet is saved.

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    • ThunderCubs (3)
      Season 3 - Episode 3
      9/7/88
      8.5

      Mumm-Ra retrieves the Sword of Plundarr and the Thundercats arrive on New Thundera. While the Thundercats want to get the Sword and treasure, Snarf and Snarfer want to free their fellow snarfs. While the Thundercats sleep, Snarf and Snarfer sneak away, but are discovered and captured by Mumm-Ra. He disguises himself as Snarfer and he leads the Thundercats to where the treasure is located, but it can only be freed by the Sword of Omens. Once the treasure is freed, Mumm-Ra reveals himself and defeats the Thundercats with the Sword of Plundarr. Now Mumm-Ra possesses the Sword of Plundarr and the Treasure of Thundera

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    • ThunderCats Ho! (4)
      Season 2 - Episode 4
      9/10/86
      8.5
      Lion-O wakes up from an awful nightmare he has been having about leaving Thundera. He remembers leaving some of his fellow Thunderians on Thundera because the ship could not stay any longer. Jaga appears to him and explains that they did not perish, and that they are on third earth. Anxious to find them, Lion-O asks Cheetara to use her psychic powers to find their location. Mumm-Ra, overhearing this news, send the Berserkers to capture the Thunderians, and bring them to him. He captures them, and has them sent to Fire Rock mountain (otherwise known to the thundercats as thundrainium). Weakened by the thundrainium, the thunderians are hopeless. Lion-O, unable to get past the thunrainium to save them uses the power of the star of thundera to cancel the effects of the thundrainium. Mumm-ra sends Grune to stop Jaga from getting the power of the star for Lion-O, but Grune fails. After giving the stars power to Lion-O, Mumm-Ra manages to steal it from him. Mumm-Ra, trying to possess the stars powers, instead gets destroyed by the stars power. Lion-O saves the thunderians, and anoints them as Thundercats. Bengali, the white tiger, Pumira, the female puma, and Lynxo the blind lynx.moreless
    • Well of Doubt
      Season 4 - Episode 19
      9/28/89
      8.4

      The Thundercats use a new Tower signal to guide a Thunderian ship in; aboard are Baron Tass and Mr. Grubber, a devious pair of Thunderians. Later Lion-O sends Torr, Baron Tass and Mr. Grubber to get water, but on the way the Baron stops at the Well of Doubt and gets some of its water. The water causes a person to become very doubtful of his own abilities. When they get back to the Thundercats, Baron Tass gives some of the water to Lion-O. On the way to inspecting the new Tower in the Whisker, Lion-O feels the effects of the water and causes the Whisker to crash. Tass comes back (from getting his Guardsman, giant stone-men), and has them attack the Thundercats. Jagara has the others hold the Sword, and when Lion-O grabs hold of the sword, he's free of the water's effect. Then he fights off the Guardsman, and makes a storm, which causes the Guardsman to fall apart, and Tass promises to change his ways.

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    • Out of Sight
      Season 1 - Episode 57
      12/10/85
      8.4
      Willa is captured by the Mutants, and Tygra and Nayda, Willa's sister, must go to Castle Plun-darr to save her. Tygra uses the invisibilty power of his whip on both of them, so they could sneak into the castle and rescue Willa, but having 2 people at a time takes too much power from the whip, so they are stuck being invisible. Lion-O uses the Sword to make them visible once again and Willa is rescued.moreless
    • Totem of Dera
      Season 3 - Episode 6
      9/12/88
      8.4

      Mumm-ra finds the Totem of Dera (a part of the T-cat treasure) which has special healing powers and can bring inanimate objects to life. He gives it to Vulture-Man and the Mutants so they can make a device to destroy the T-cats. After making the device, the mutants decide to test it near a swamp. At Cat's Lair, Lion-O sees that there is some mutant activity near the swamp. He, Wilykit, and Snarfer decide to check it out. When going to the swamp, the Hovercat is brought down by a swamp monster made by the device. The Hovercat crashes in the swamp, and Lion-O gets intoxicated by the deadly swamp water. Jaga appears and tells Snarfer that he must get the Totem of Dera to heal Lion-O. Snarfer gets the Totem and succeeds in healing Lion-O. Lion-O calls on the T-cats to try to kill the swamp monster. When all their weapons prove ineffective against the monster, the T-Cats come up with the idea to dissolve the monster in water and they succeed in defeating it.

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    • The Wolfrat
      Season 1 - Episode 28
      10/30/85
      8.4
      A Mechanical Rodent Penetrates the Cats' Lair, releasing a gas that reduces them to 9 inches. Tygra manages to create an antidote for the gas, just in time to fight the mutants who were attacking. Snarf gets another dose of the antidote, and doubles in size. He chases all the mutants out of the lair, but ends up hitting his head on a lot of doorways.moreless
    • Psych Out
      Season 2 - Episode 12
      9/23/86
      8.4
      Mumm-Ra tells Aluro that the Egora Talisman will give whoever possesses it the power of extreme self-confidence. Aluro finds the talisman and uses it, along with his own powers of hypnotism, to "take away" the Thundercats' self-confidence, leaving them hopeless and confused. Only Snarf remains and it is up to him to defeat Aluro and restore the Thundercats.moreless
    • Fond Memories
      Season 1 - Episode 65
      12/20/85
      8.3
      Mumm-Ra pretending to be one of the ThunderCats friends takes Lion-O to a gallery of the ThunderCats accomplishments. However, the pictures can come to life and Lion-O must battle Rataro, Safari Joe, and others. ONce the other ThunderCats arrive they end up in trouble and Lion-O is confronted by Mumm-Ra who has made himself into a carbon copy of Lion-O. It's Lion-O VS Lion-O and is a draw, until Lion-O shows Mumm-Ra his reflection.moreless
    • Return to Thundera (2)
      Season 4 - Episode 2
      9/5/89
      8.3

      More and more earthquakes are occurring because of the malfunctioning Gyroscope. Meanwhile Lion-O receives a distress signal from Thunderian refugees, and he, Cheetara, and Snarf go to find them. Mumm-Ra resurrects Grune the Destroyer, and Grune seeks out Lion-O and Cheetara. Grune finds and fights them, breaks the Sword of Omens, and then he chains them up on the Churning Rocks. Snarf, who was hiding, gathers the pieces of the Sword to take back to Bengali to be fixed. Snarf gets captured by Char, a thief who wants the Sword for himself. Snarf tricks him into reforging the Sword, and when it is as good as new, Lion-O begins to sense it, and so he calls it. The Sword goes to him, he escapes, and then he defeats Grune. But Mumm-Ra still has the Gyroscope's regulator...

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    • The Doomgaze
      Season 1 - Episode 12
      9/24/85
      8.3
      Mumm-Ra and the Mutants plot to open the Time Warp Prison and release the evil Princess Ta-She in order to use her deadly Doomgaze against the Thundercats.
    • Bracelet of Power
      Season 2 - Episode 40
      10/31/86
      8.3
      Tygra, Cheetara, and Bengali bring back a few more pieces of the Treasure of Thundera. Snarf is fascinated by a bracelet and takes it to wear around. He sees that everyone obeys his every command when he has on the bracelet. Mumm-Ra also notices this. He goes to Cats Lair, takes the bracelet, and turns Lion-O, Cheetara, Tygra, and Panthro into his slaves. He takes them to his pyramid and locks them in a cell. Snarf and the Thunderkittens decide to go rescue the Thundercats. At the pyramid, when Snarf encounters Mumm-Ra, Snarf acts like the bracelet is controlling him, but he is actually immune to the bracelet's power. Meanwhile, the Thunderkittens take back the Sword of Omens, which Mumm-Ra had taken. Mumm-Ra, now trusting Snarf, goes to sleep in his casket, and Snarf takes the bracelet back. The spell is broken and the Thundercats escape from the cell. Mumm-Ra confronts them, but Lion-O uses the Sword to lock Mumm-Ra in the cell.moreless
    • The Book of Omens
      Season 4 - Episode 20
      9/29/89
      8.3

      New Thundera is being torn apart and the Thundercats must present certain artifacts at various dangerous locations that used to be beautiful places, then Lion-O must go into the book and give the Key of Thundera to the guardian of the book "at the 24th hour," or the Thundercats will be frozen in time and New Thundera will be destroyed. But Mumm-Ra steals the book and key and journeys into the book himself. He wants to save New Thundera BUT wants the Thundercats frozen in time. The Ancient Spirits of Evil try to stop Mumm-Ra because they fear if Mumm-Ra goes into the book, their powers will cease to exist. The other Thundercats run into problems also at the locations they are supposed to be at. Lion-O goes into the book using the Sword of Omens and battles Mumm-Ra one on one, neither of them using any magic. Even when Mumm-Ra cheats, Lion-O still wins. The ASOE summon their "champion," Pyron, to then fight Lion-O, but Lion-O gets the dragons in the book to fry him... He presents the key and releases the ThunderCat signal, which turns into a black puma. It runs to all the TCats, unfreezes them, and restores the places to their original state... just in time.

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    • Monkian's Bargain
      Season 1 - Episode 39
      11/14/85
      8.3
      Monkian goes to Mumm-ra and agrees to give him anything if Mumm-ra will make him powerful enough to rule Third Earth. Mumm-ra agrees cleverly, and gives him Power Spheres which make him super strong and give him super weapons. He freezes all the Thundercats, then defeats Lion-O and takes the sword of Omens back to Mumm-ra. Mumm-ra takes it, and then says that Monkian's part of the bargain will be that he can keep the spheres, but he has to stay in Mumm-ra's pyramid for all eternity. Walls surround Monkian, and every time he breaks them down, a new set of walls shows up. While Monkian and Mumm-ra are arguing, Lion-O retrievs the sword and frees the other Thundercats. Monkian gives up his power to be free again.moreless
    • The Spaceship Beneath the Sands
      Season 1 - Episode 14
      9/26/85
      8.3
      Tired of constantly being bested by the Thundercats, the Mutants have Mumm-Ra raise their spaceship and salvage their vehicles.
    • The Zaxx Factor
      Season 4 - Episode 18
      9/27/89
      8.3

      Vultureman escapes from exile by hijacking a bookmobile. He finds a disk containing ancient history about two powerful evil forces on Third Earth: Mumm-Ra and his enemy Zaxx. Using this information, Vultureman plots to defeat Mumm-Ra and rule the universe.

    • Together We Stand
      Season 2 - Episode 15
      9/26/86
      8.3
      Mumm-Ra summons the Berserkers and coats their armor with Thundrainium and sends them to attack the Thundercats at the Tower of Omens. Realizing that their armor is coated with Thundrainium, the Thundercats at the tower need help and Lion-O and Tygra rescue them. They create a windstorm to rub off the Thundrainium and the Berserkers retreat. Meanwhile the Lunataks invade Cats' Lair and the Thundercats must rush back to save the Thunderkittens and Snarf who are being held as the Lunataks' slaves.moreless
    • Tight Squeeze
      Season 1 - Episode 40
      11/15/85
      8.3
      After the Mutants fail to ambush and defeat the Thundercats with Vultureman's new thundrainium cannon, Vultureman, furious about the failed attempt and the loss of his weapon, activates a self-destruct built into each of his inventions or repaired machinery, and all the Mutant technology disintegrates. To even the odds, Slithe asks Mumm-Ra to send an electrical energy creature to destroy all the equipment in Cats Lair, which also seals up the door to the Sword Chamber, trapping the Sword of Omens inside along with all the Thundercats' weapons. The Mutants attack, and manage to capture Cheetara and Panthro. Snarf must climb into the ventilation shafts to reach the Sword Chamber from within, but Jackalman follows him trying to capture him. Outside, Lion-O is attacked by Slithe and Monkian, and later Mumm-Ra. After Snarf successfully gets the Sword back to Lion-O, Lion-O summons Panthro and Cheetara (freeing them) and they defeat Mumm-Ra and the Mutants.moreless
    • The Rock Giant
      Season 1 - Episode 43
      11/20/85
      8.3
      Mumm-Ra awakens the Rock Giant, an ancient monster made of stone which looked like a mountain to the Thundercats. When it wakes up, Mumm-Ra sends it to destroy the Thundercats' Lair. The Thundercats try and defeat it using the Thundertank, and eventually with the help of the Sword, the giant is beaten.moreless
    • The Demolisher
      Season 1 - Episode 38
      11/13/85
      8.3
      A vagabond space traveler lands on Third Earth to challenge Mumm-Ra to a fight. The Demolisher is victorious against Mumm-Ra and sends him running back to his Tomb. Mumm-Ra acknowledges the power of the Demolisher, and convinces him to seek and destroy Lion-O. The Demolisher, searching for another fight gladly accepts Mumm-Ra advice. He battles with Lion-O only to face defeat.moreless
    • The Terror of Hammerhand
      Season 1 - Episode 6
      9/16/85
      8.2
      When Snarf is captured by the Berzerkers, Lion-O goes to the aid of Snarf and a flock of Unicorns.
    • Return of the Driller
      Season 1 - Episode 32
      11/5/85
      8.2
      Driller, Mumm-Ra's servant who captured Panthro for him in Spitting Image, returns to aid Mumm-Ra once again. His job this time is to drill a hole from the Cat's Lair to the Acid lake, allowing the acid to flow in and eat away at the lair. The Thundercats set out to find the one substance that neutralizes the acid.moreless
    • Hair of the Dog
      Season 2 - Episode 24
      10/9/86
      8.2
      With only Lion-O and Snarf guarding the Lair, Mumm-Ra decides this is a perfect opportunity to invade the Lair, so Ma-Mutt captures Snarf and Mumm-Ra switches Snarf and Ma-Mutt. Ma-Mutt (who now looks like Snarf) goes to Cats Lair and gives Lion-O some poisoned candy fruit. Lion-O becomes ill and realizes that this Snarf is really Ma-Mutt and Mumm-Ra arrives and defeats Lion-O. Snarfer's bad dream of Snarf becoming a dog causes him, Ben-Gali, and Pumyra to go to Cats Lair, but Mumm-Ra lays a trap for them. He sends Ma-Mutt to get Snarfer and Lion-O becomes better again and distracts Mumm-Ra. When Lion-O summons the other Thundercats, Snarf (who looks like Ma-Mutt now), using Mumm-Ra's chant that changes Mumm-Ra into the everliving, becomes... Snarf-Ra the everliving and he rescues Ben-Gali, Pumyra and they in turn rescue Snarfer from Ma-Mutt. Then Snarf-Ra challenges Mumm-Ra and defeats him. After the battle is over, Lion-O uses the sword to restore Snarf to his original state.moreless
    • Day of the Eclipse
      Season 2 - Episode 19
      10/2/86
      8.2
      Third Earth is experiencing a total lunar eclipse and Mumm-Ra uses this eclipse to cast a spell that will cause Cats Lair and everything in it to malfunction. The Thundercats first notice this when things start falling apart and fail. Lion-O and Panthro must fight the Mutants while having problems running the Thundertank. They still manage to defeat the Mutants, but crash the Thundertank. Lion-O realizes that this must be Mumm-Ra's evil work and goes to the pyramid to stop Mumm-Ra. Meanwhile Cats Lair is getting worse as Cheetara and Tygra rush to fix things in the lair but are attacked by the Lunataks. They defeat the Lunataks temporarily, but the Lunataks return to finish off the Lair. In order to break the spell, Lion-O must use the Sword to block out the sunmoreless
    • The Sound Stones
      Season 2 - Episode 18
      10/1/86
      8.2
      Vultureman develops a sonic gun to destroy the Thundercats. Since the other Mutants refuse to help, Vultureman decides to go on his own until the Lunataks "kidnap" him and force him to help them. Vultureman uses a legendary sound stone to power the device and he and the Lunataks use it against the Thundercats at the Tower of Omens. The Thundercats barely escape and are saved by Lion-O, but they lose the tower to the Lunataks. The Thundercats must design a sound weapon of their own with a sound stone to counter Vultureman's weapon and retake the Tower of Omens.moreless
    • Touch of Amortus
      Season 4 - Episode 17
      9/26/89
      8.1

      Mumm-Ra orders Amortus, a being he banished to the Land of No Return centuries ago, to destroy Lynx-O. Amortus makes Lynx-O crash in the Thunderstrike, and then he touches Lynx-O's face. The spell from the touch makes Lynx-O feel like he is an outcast, so he leaves to join Amortus in the Land of No Return. The other TCats, Lion-O, Panthro, and Cheetara, go after him. In the Land of No Return, Amortus again touches Lynx-O, this time causing him to turn to stone. The other TCats arrive and try to beat Amortus, but he touches all of them, causing them to start turning to stone. But just as Lion-O is about to turn entirely to stone, he calls the Sword and it breaks them free. It also releases other warriors trapped by Amortus, and they all come and defeat him. Lynx-O is rescued just in time- just before the stone is permanent- and they all go home

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    • Feliner (1)
      Season 1 - Episode 29
      10/31/85
      8.1
      Vulture-man summons Ratar-O to take him to the planet of the Snarfs to capture one of them and use it as ransom with the Thundercats. Snarf (Osbert J), thinking his entire race was wiped out when Thundera blew up finds out that they have captured Snarfer, his little nephew. The Thundercats set out to find the mutants and save Snarfer. After successfully saving Snarfer, the Thundercats are faced with the problem of returning Snarfer to his planet. Panthro cleverly invents the Feliner, the first Thundercat air-ship. In order for it to work though, the machine need a hyper-space mega-condenser. Snarf reminds him that there is one on Ratar-O's Ratstar. The Thundercats once again persue the mutants to the wreckage site of the Ratstar to "take" their mega-condensor.moreless
    • Divide and Conquer
      Season 1 - Episode 55
      12/6/85
      8.1
      Vultureman invents a voice imitator which can imitate *anyones* voice. The mutants use the invention to trick the Thundercats into falling for false distress calls. They go on the communication frequency that the Thundercats use and pretend to be Thundercats in danger. Each Thundercat is lured into a different danger zone of third earth. Wilykit and Wilykat get trapped in the Vortex, Cheetara in a giant bee hive, Tygra in Mole-masters hole, and Panthro gets captured by the mutants. Lion-O and Snarf go off to save them once again, and put the mutant scheme to an end.moreless
    • Mandora: the Evil Chaser
      Season 1 - Episode 10
      9/20/85
      8.1
      Lion-O and Snarf stumble upon a portable jail cell, and mistakenly open it up. Three of the galaxy's worst villains escape. One of them, a slick thief, manages to steal Lion-O's sword. Lion-O helps Mandora, the inter-stellar police officer that imprisoned the villains, recapture them, and return them to their cells.moreless
    • The Wild Workout
      Season 2 - Episode 41
      11/3/86
      8.1
      Lion-O, Panthro, and Snarf set out to look for more pieces of the Treasure of Thundera, and Mumm-Ra sets a trap for them. He freezes them in the caverns of cold on Thundera. Meanwhile, back on third earth, the Luna-tacs, in need of another source of power for their ship, use excersise machines to power it up. They capture the other Thundercats and force them to workout on the machines to power up the ship. The Thundercats manage to overwork the power supply, and escape from Sky Tomb. Back in the caverns, Snarf manages to get the sword of omens to Lion-O with his tail, and they escape and return to third earth.moreless
    • The Mad Bubbler
      Season 2 - Episode 14
      9/25/86
      8.1
      The Madd Bubbler, an ancient creature of third earth who lives in an old Thundrilium mine on hook mountain has the power to turn all creatures into evil beings, and making people accept his modo - "destroy, or be destroyed". He manages to seduce the Luna-tacs to fight against each other, and afterwards Panthro, Tygra, and Cheetarah. They fall under the bubblers power and begin fighting each other to the death. Lion-O, observing these occurrences through the sword of omens finds out from Jaga that snarfs are not capable of evil. He summons Snarf and Snarfer and tell them to retrieve the Thundercats from the mine so that they can be returned to their normal selves.moreless
    • The Heritage
      Season 4 - Episode 8
      9/13/89
      8.1

      Wily Kit and Kat, exploring New Thundera, stumble upon an Orb of Gold, and pick it up thinking that it is apart of their Heritage. Possessed by the power of the Golden Sphere of City, the ThunderKittens get greedy, and let the power of the orb overcome them. Mumm-Ra manages to get a hold of the orb, and his powers get four times more powerful. He gets so powerful, he destroys the Sword of Omens. Jar, the scrap metal collector reforges it for Lion-O. He gets so powerful that he challenges the power of the ancient spirits of evil. They lock him out of his pyramid until he surrenders the Orb to them. The spirits of evil let him back in, but destroy the Golden Sphere of City.

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    • The Shifter
      Season 1 - Episode 64
      12/19/85
      8.0
      Vultureman creates a device that shifts minds and bodies. He gives Panthro Snarf's body, and gives Snarf Panthro's Body. He also shifts Lion-O and Wilykat, and thus makes the sword of omens unusable. Eventually, Vultureman shoots the sword, and it causes a reaction that restores all the Thundercats to their rightful bodies.moreless
    • Return to Thundera (1)
      Season 4 - Episode 1
      9/4/89
      8.0

      The Ancient Spirits of Evil give new life to Mumm-Ra and Ma-Mutt, send them to New Thundera, and build a new Pyramid for Mumm-Ra. The Thundercats say goodbye to Third Earth and depart for Thundera, leaving Tygra and Pumyra behind to watch Cat's Lair and the Tower of Omens. The Thundercats soon arrive and begin plans to build a new lair. Mumm-Ra meanwhile learns that the planet's gravity is controled by the Gyroscope under the Churning Rocks at the center of the planet. The Gyroscope is guarded by Jaguara, an ancient Thundercat sorceress. Mumm-Ra disguises himself as Jaga and puts Jaguara under a spell, making her change the rotation of the Gyroscope to throw the Thundercats clear off the planet. As the Thundercats are floating away, Lion-O calls on the Eye of Thundera to help him, and it breaks Mumm-Ra's spell... but not before Mumm-Ra takes part of the Gyroscope's regulator. Without those controls, the planet will be destroyed within 2 hours...

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    • The Transfer
      Season 1 - Episode 54
      12/5/85
      8.0
      A spaceship approaches third Earth and it sets off all the alarms of the Thundercats, Mutants and even Mumm-Ra. It contains enough radioactive material to put an end to the Thundercats. Jackalman takes the recovered materials first and Mumm-Ra takes it from him. The Thundercats battle Mumm-Ra on top of the Dark Pyramid for the sphere and eventually win, setting the materials to explode safely in space.moreless
    • Return of the ThunderCubs
      Season 2 - Episode 37
      10/28/86
      8.0
      Panthro, Tygra, and Cheetara return to New Thundera in the Feliner to find more of the Treasure of Thundera, but Mumm-Ra shoots the Feliner down and, as the Fog of Despair, sends them to the Canyons of Youth, which changes them back into Thundercubs. Then Mumm-Ra disguises himself as Lion-O and tells the Thundercubs to find the treasure for him. Meanwhile, back on Third Earth, Lion-O and Snarf decide to go rescue the Thundercats on New Thundera, but they must ask the Mutants to take them to New Thundera in the Rat-Star. The Mutants agree, secretly planning to attack Lion-O once they're in space. They do attack and imprison him and Snarf on the way to Thundera, but they manage to break out. Cheetara meanwhile, using her sixth sense, locates part of the treasure, the Mirror of Truth. The real Lion-O shows up, and uses the Sword of Omens with the Mirror of Truth to restore the cubs to their proper age, and Mumm-Ra reveals himself and turns into Mumm-Ra the everliving. Cheetara uses the mirror to defeat Mumm-Ra. Finally, the Thundercats use the Rat-Star's supplies to fix the Feliner, and then go home with the Mutants wedged in the baggage compartment.moreless
    • The Crystal Queen
      Season 1 - Episode 23
      10/9/85
      8.0
      The Thundercats think that Snarf is getting too old, and that he is not up to doing as much as he is. To prove them wrong, Snarf saves the Thundercats from another mess. The evil crystal queen, Tartara, captures the Arrietta bird, whose songs enchant the berbils harvests. Lion-O, upset with her selfishness go off to save the bird, but gets caught, and put under an evil spell. Snarf, managing to slip through the crystal queens defenses, saves Lion-O and frees the Arrietta bird.moreless
    • Malcar
      Season 4 - Episode 10
      9/15/89
      8.0

      Mumm-Ra summons Malcar, an ancient alchemist, to return from the dead. The alchemist returns old and weak, and Mumm-Ra must restore his youth and power. Malcar regains his powers to use them against the Thundercats.

    • The Thunder-Cutter
      Season 1 - Episode 27
      10/29/85
      8.0
      Mumm-Ra summons the great samurai Hachiman to seek and destroy Lion-O. He tells Hachiman that Lion-O and the Thundercats are destroying his planet. Hachiman and Lion-O confront each other, but their swords refuse to draw on each other. They become allies and hope to destroy Mumm-Ra together. Enraged, Mumm-Ra summons another warrior, a ninja, to sabotage the Thundercats, and retrieve Slithe whom they have captured.moreless
    • Good and Ugly
      Season 1 - Episode 53
      12/4/85
      8.0
      Lion-O encounters two beings who each tell him the other's race is evil and cannot be trusted. Unfortunately, he makes the mistake of assuming that the more attractive of the two is the one he should side with.
    • Return to Thundera (4)
      Season 4 - Episode 4
      9/7/89
      7.9

      Mumm-Ra sends Ma-Mutt disguised as Mandora to free the Mutants from Capt. Bragg's circus train and sends Bragg and Crowman falling into deep space. The Mutants are then ordered by Mumm-Ra to get rid of Tygra and Pumyra. The Mutants attack Snowman on Hook Mt. and Snowmeyow gets Pumyra for help and Tygra contacts the real Mandora to save Bragg and Crowman. Then together, they recapture the Mutants. Meanwhile on New Thundera, the earthquake tremors grow worse and the new Cats Lair collapses trapping Snarf in the ruins. Lion-O uses the sword to contact the other Thundercats and they rush to the Lair to save Snarf. Afterwards, Mumm-Ra destroys the Gyroscope's regulator...

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    • Key to Thundera
      Season 2 - Episode 36
      10/27/86
      7.9
      While trying to figure out a way to read the Book of Omens, Lion-O tries looking through the sword at the book. He is immediately drawn into the book, where a voice asks him if he has "the key." Lion-O says he doesn't, and four dragon heads appear and shoot fire at him. Snarf, who saw Lion-O get sucked into the book, tries to show Cheetara what happened, and he too gets sucked in. Mumm-Ra, who also watched Lion-O get sucked in, goes to cats lair and takes the book so he can destroy it with Lion-O inside. Meanwhile, just by coincidence, Panthro finds an odd looking key on Thundera. He and Tygra head back to Third Earth with the key, not knowing what it's for. Back on Third Earth, Mumm-Ra is just about to boil the book when Lion-O calls for the sword, and it brings him and Snarf back outside. Mumm-Ra takes the sword and looks through it at the book, and he gets sucked in! But Lion-O has to save him because of the code of Thundera, and Lion-O does save him. Panthro and Tygra arrive with the key, and they realize it is the one the book was asking for.moreless
    • The Micrits
      Season 1 - Episode 41
      11/18/85
      7.9
      Micrits, a tiny race of human like figures happen to live right outside Cats Lair. Unaware of their existance, Lion-O manages to continuously step on their village (keep in mind they are the size of toy figures) and destroy their homes. Upset at this disrespect, the Micrits decide to take a stand and manage to trap Lion-O. With the Thundercat Lord in trouble, the mutants attack Cats Lair. After much talk, Lion-O manages to convince the Micrits that he is a "good guy" and convinces them to let him go to help save his friends. Once again, Lion-O saves the day, and befriends the Micritsmoreless
    • The Thunderscope
      Season 2 - Episode 42
      11/4/86
      7.9
      Back visiting their old wreckage site, Lion-O and Snarf stumble upon the Thunder-scope, a legendary thunderian telescope that locates lost thunderians, and their belongings. Mumm-Ra, interested in the Thunder-scope so he could find the treasure of thundera, ambushes Lion-O. He actualy kills him in this scene. Before Lion-O dies, he manages to take out a lens from the Thunder-scope so Mumm-Ra could not completely use it. Jaga appears to Snarf, and Lion-O's dead body, and revives him. Mumm-Ra comes back for the missing piece, and Lion-O has to stop him.moreless
    • Mechanical Plague
      Season 1 - Episode 48
      11/27/85
      7.8
      Panthro invents flying video cameras which are suppose to record the events that take place on third-earth so they could create their own holographic time capsule. Mumm-Ra, in hope of destroying the Thundercats once more, revives the great mechanical monsters which the Thundercats have destroyed in the past to attack them. He revives the Mutant War robot, The Driller, The Giant Insect, and the Techno-Pede.moreless
    • Sword in a Hole
      Season 1 - Episode 35
      11/8/85
      7.8
      Mumm-Ra hires Captain Schiner no send a fake distress signal to the Thundercats. With their new vehicle, the Feliner, the Thundercats set out into deep space to help the "ship in distress". When they arrive, Schiner captures Lion-O, and the sword of omens. He gives the sword to Mumm-Ra, and Mumm-Ra throws the sword into a black hole. Cheetara returns to third earth to get Panthro, in an attempt to save Lion-O. They do rescue Lion-O, and seize Schiner's ship. Panthro sets a course into the black hole to recover the sword. They enter, and must battle the robotic city of lost space ships to recover the sword of omens, and escape.moreless
    • Secret of the Ice King
      Season 1 - Episode 52
      12/3/85
      7.8
      An old iceberg on Hook Mountain begins to melt; encased in it is an ancient being known as the Ice King. He begins to destroy Snowman's caslte at the top of Hook Mountain and freezes Snowman in solid ice. Snowmeow, his faithful compainion, seeks out Lion-O to do away with the being and save his master. Lion-O fails and is also frozen. Once again Snow-Meow sets out to find the other Thundercats. They arrive only to face defeat, Cheetarah the only one to survive. She uses the sword to restore Lion-O to normal and he in turn restores everyone else. They discover that the Ice King is looking for an ancient egg to see his wife one last time before he dies. They understand his madness and assist him in finding the eggmoreless
    • Shadowmaster
      Season 4 - Episode 15
      9/22/89
      7.8

      From the Shadow Realm, the Shadowmaster contacts the Ancient Spirits of Evil (ASOE), telling them of how he captured Lion-O's father, Claudus, just before Thundera blew up. Then the Shadowmaster, through a bad dream, shows Lion-O his captured father and challenges Lion-O to a fight. Lion-O goes to the Shadow Realm through the Book and Sword of Omens, and is able to fight the Shadowmaster as long as the Sword stays bonded to the book. However, the Shadowmaster sends a huge bat to steal the Sword. It succeeds, and then Lion-O becomes very weak in the Shadow Realm. Mumm-Ra meanwhile, feeling like the ASOE will turn against him in favor of the Shadowmaster, sends Ma-Mutt to secretly steal the sword from the bat and put it back near the book. This renews Lion-O's strength, who calls for the Sword, rescues Claudus, and exiles the Shadowmaster. Claudus leaves Lion-O, but at the end you see him and Jaga standing next to each other in that blue, ghostly form. Now Lion-O has 2 mentors to give him advice!

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    • Jackalman's Rebellion
      Season 1 - Episode 44
      11/21/85
      7.8
      The normally submissive Jackalman decides to start his own army in hopes of conquering Third Earth by himself. He does manage to give the Thundercats trouble, but soon he is defeated and ends up crawling back to the other mutants at Castle Plun-Darr, who weren't very happy that he rebelled in the first place.moreless
    • Helpless Laughter
      Season 4 - Episode 11
      9/18/89
      7.8

      A convergence of the Moons of Plun-Darr causes a drought on Thundera. Panthro and Snarf go looking for water, then Ezuka, the flying Serpent of Dreary Canal wanting to get water itself, attacks Panthro and Snarf and causes them to fall into the Swamp of the Laughing Lilypads, making them laugh out of control. Ezuka attacks the Lair, still looking for water. Lion-O uses the Sword to make some rain, then he and Ben-Gali use the Thunderstrike to melt some ice, but Mumm-Ra comes along and causes a flood. Lion-O calls for the others, which also free Panthro and Snarf from the laughter and they use some of the Swamps water to cause Mumm-Ra to laugh uncontrolably, and he falls in the flood waters and is washed away.

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    • Mumm-Rana
      Season 1 - Episode 63
      12/18/85
      7.8
      The mutants fail to destroy the Thundercats in an areal assault and find themselves stranded on a far part of third earth inhabited by the good Mumm-Rana. She is suppose to be the exact opposite of Mumm-Ra, serving the ancient spirits of goodness as opposed to the ancient spirits of evil. Somehow Mumm-Ra shows up on the scene and puts her under a spell where she must serve him. These two now evil Mummies plot to destroy the Thundercats and rule third earth side by side as King and Queen.. Surprise surprise good always pevails, and the Thundercats manage to turn Mumm-Rana back to her good self, and banish Mumm-Ra once again.moreless
    • The Evil Harp of Charr-Nin
      Season 1 - Episode 36
      11/11/85
      7.7
      Wilykit and Wilykat find an ancient harp that has a genie in it. His name is Charr-Nin. Mumm-Ra appears to the genie and tells him that if he destroys the Thundercats, he will be freed from his eternal prison in the lamp. Foolishly, Charr-Nin agrees, and begins trapping the Thundercats in his lamp one by one. Mumm-Ra's plan works, and he betrays Charr-Nin. During their arguing, the Thundercats manage to escape, leaving Mumm-Ra and Charr-Nin battling beneath the earthmoreless
    • Locket of Lies
      Season 2 - Episode 39
      10/30/86
      7.7
      On Thundera, Mumm-Ra creates the Locket of Lies and has Mu-Mutt plant it in the Valley of the Snarfs. Eggbert and Oswald Snarf find the locket and contact the Thundercats about it. When communications break up, the Thundercats (Lion-O, Cheetara, Panthro, Tygra) go to Thundera to see the Locket. When they arrive, the Locket leads them to a place in front of an old building. But the ground they are standing on gives way and they are trapped in a well. Mumm-Ra shows up and tells them not to try to escape, but the Thundercats try anyway. The walls start closing on them, and all their efforts to stop the walls fail. Finally, Lion-O uses the Eye of Thundera and the Cat Signal to push through the wall, and they all escapemoreless
    • Frogman
      Season 4 - Episode 7
      9/12/89
      7.7

      Wily Kit and Kat are constructing a well for the New Cat's Lair on New Thundera. The Thundercats on New Thundera receive a distress signal from Thunderian refugees trying to find their way to New Thundera. The Kittens are left alone with Snarf on at the New Cat's Lair, and Lion-O and Snarfer are out constructing an early warning device (I guess for weather purposes). The rest of the Thundercats seek out the refugees in space. When Wily Kit and Kat strike water, they accidentally unleash a monster that Jaga trapped in the underground lake centuries ago. Frogman, with aquatic powers, tries to sink the New Cats Lair. Lion-O however re-traps Frogman in his watery prison.

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    • Return to Thundera (3)
      Season 4 - Episode 3
      9/6/89
      7.7

      Lion-O, Panthro, and the Thunderkittens take the Whisker, a new flying vehicle, to the Churning Rocks to rescue the Thunderian refugees who had called from there. The Thundercats get captured by Two-Time, a robot with 2 heads. Two-Time takes them aboard his spaceship, Dome-Down, and the Thundercats see that he has also captured the refugees. Lion-O defeats Two-Time and the refugees are freed. Meanwhile, Lynx-O, Cheetara, and Bengali spot Mumm-Ra near the Churning Rocks, and inform Lion-O of this. Lion-O, Panthro, and the Thundekittens head to the Churning Rocks and confront Mumm-Ra, who is in the form of Jaga again. They break Mumm-Ra's spell (again) over Jaguara, who had temporarily repaired the Gyroscope. Lion-O defeats Mumm-Ra, but Mumm-Ra reminds them all that eventually the planet will be destroyed without the real controls, which he still has...

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    • Sixth Sense
      Season 1 - Episode 26
      10/28/85
      7.6
      An alien spaceship crash lands on Third Earth and can somehow communicate with Cheetara through her sixth sense. She becomes a part of the spacecraft and begins to feel what it feels. The mutants recover the space ship and begin tampering with and damaging it. Little do they know that it is not only effecting the spaceship, but it is effecting Cheetara. In order to save Cheetara, the Thundercats set out to recover the space ship from the mutants and fix it.moreless
    • Turmagar the Tuska
      Season 1 - Episode 45
      11/22/85
      7.6
      An evil robot monster is attacking the Tuska Village, in an area unexplored by the Thundercats. Turmagar, the leader of the Tuskas, travels to the Cat's Lair to ask for aid in defeating the Techno-Pede robot which is destroying his village. The Thundercats agree to help Turmagar, and set out to the Tuska Village.moreless
    • The Formula
      Season 2 - Episode 38
      10/29/86
      7.5
      Aluro invents a "booster" potion in hopes that it can make Sky Tomb able to fly to Thundera. It doesn't work, and he throws the potion into the forest. Then he notices everything in the forest has grown huge. He and Luna give the potion to the Mutants, who sprinkle it around Cats Lair. The Mutants also capture Lynx-O and Snarf. But while the Mutants are preparing to transfer Lynx-O and Snarf from their cell, a mouse in the cell who Snarf had befriended gets some of the potion and attacks the Mutants. That lets Lynx-O and Snarf analyze the potion and come up with an antidote. Meanwhile, Lion-O, Pumyra, and the Thunderkittens are fighting off huge bugs in the forest that has grown around Cats Lair. Lynx-O and Snarf arrive, sprinkle the antidote over the forest, and then watch as everything turns back to normal.moreless
    • Cracker's Revenge
      Season 4 - Episode 12
      9/19/89
      7.5

      Capt. Cracker and his mechanical parrot Polly land on Way-Out Back and free the Lunatacs and put Bragg and Crownan in one of the train's cages. They plan to go to Third Earth to attack it since most of the Thundercats are no longer on Third Earth. Meanwhile the ThunderCats have learned Cracker escaped and Snarfer and Mandora go to catch him. Bragg has Crownan ride a fire exstiquisher, so he can get into space and get help. Mandora finds him, and the three of them go to Third Earth. Mandora fights with Cracker and the Lunatacs, but is beaten and she and Snarfer are tied to her cycle and sent towards a mountain. Lion-O, Panthro, and Cheetara arrive and Lion-O saves Mandora and the others. Meanwhile Cracker and the Lunatacs go to attack Cats Lair, only occupied by Pumyra, but Lion-O uses the Eye's signal to cause the drawbridge to tilt, sending Cracker and the Lunatacs into the moat. The Lunatacs are exiled again.

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    • Exile Isle
      Season 2 - Episode 35
      10/24/86
      7.4
      The Thundercats capture the Lunataks and, tired of dealing with their evil ways, decide to exile the Lunataks to Exile Isle, an island in space far away from Third Earth. When the Lunataks arrive, they meet up with Captain Cracker, a pirate who the Thundercats also exiled. Together, the Lunataks and Capt. Cracker send out a distress signal to a passing ship. When the ship comes near the island, the Lunataks send up a cloud of fog, which makes the ship crash. They use the engines of the ship to push the planet out of orbit and towards Third Earth. Snarfer, on his way home from Thundera, crashes on the island when it runs into him. Lion-O goes to rescue Snarfer and stop the island, because it has a deadly gas that will blow up if it enters Third Earth's atmosphere. He goes without the Sword of Omens. He gets cornered by Capt. Cracker, but the Sword awakens and flies to Lion-O, without him even calling it. He then uses dirt to stop the engines, and the planet/island eventually returns to orbit. The Lunataks, still stuck there, turn Capt. Cracker's house into a ship and fly back to Third Earth.moreless
    • Dream Master
      Season 1 - Episode 56
      12/9/85
      7.2
      Mumm-ra transforms himself into the Dream Master, and gains the power to control the Thundercats' dream selves. All except Lion-O. They all become slaves to Mumm-ra the Dream Master in their sleep, but when they wake up, they are just tired. However, when the Thundercats sleep again, Mumm-ra captures their dream selves in little bottles, and when Lion-O tries to wake them up, he can't. He goes and fights Mumm-ra, and frees the other Thundercats' dream selves. They wake up, come running, and help to defeat Mumm-ra again.moreless
    • The Jade Dragon
      Season 2 - Episode 43
      11/5/86
      7.2
      Mumm-Ra discovers the power of one of the pieces of the treasure of Thundera. The Double-Headed Dragon of Doom, or the Jade Dragon possess the power to entrap people in its stomach. The legend says that Haji-Man's ancestor gave the dragon to his wife as a marriage gift, and since her father was so against their marriage, he put a curse on the dragon and it engulfed Haji-man's ancestor. Jaga freed the him, and he gave the dragon to Jaga for safe keeping. Now, the Thundercats have found the Jade Dragon, and Mumm-Ra manages to trap Lion-O and Cheetara in it. Haji-man is their only hope.moreless
    • Dr. Dometone
      Season 1 - Episode 21
      10/7/85
      7.1
      An old scientist seeks the Thundercats to help him save the oceans of Third Earth. Long ago, a crack was made in the bottom of the ocean which caused the water to drain into the earth's core. Dr. Dometone created a plug which sealed the hole in the ocean, and saved Third Earth from destruction. Now, an evil plundarrian, Scrape, has come to Third Earth to remove the plug and mine the rock that is found on the bottom of the ocean, a rock that powers his planet - Blue Plun-Darr. The Thundercats join Dr. Dometone and his frog-type robot Hercie to save the planet from total destruction.moreless
    • Mandora and the Pirates
      Season 1 - Episode 31
      11/4/85
      6.9
      Mandora, on space-patrol, encounters an old pirate ship which doesn't meet inter-galactic standards. She boards the ship, arrests the pirate, and sends the ship to a space prison. Little does she know that she has boarded the Jolly Roger, the home of the evil pirate Cracker. Mandora is captured by the creature. Lion-O intercepts one of her distress calls, and must go into space to save her. She sends her bike to third earth by remote control, and Lion-O goes after hermoreless
    • Swan Song
      Season 4 - Episode 16
      9/25/89
      6.8

      An Ecology Inspector (EI) comes to Thundera to inspect the new Cats Lair. His ship uses the SWAN system (Space Way Airborn Navigations) to direct him to planets all over the universe. When he arrives on Thundera, he gets ambushed by Two-Time (see Return to Thundera, Part III, this page). Two-Time uses a hologram to make the EI's ship crash into a mountain, and then when the Thundercats come to rescue the EI in the Feliner, Two-Time uses the hologram again. Lion-O manages to fly around the mountain and lands the Feliner. Meanwhile, Two-Time flies to new Cats Lair in his spaceship, Dome-Down. He actually picks up the whole Lair and keeps it inside Dome-Down. The Thundercats fix the Feliner, rescue the EI, and then fly to catch Dome-Down. Once they catch the spaceship, Lion-O uses the sword to defeat Two-Time and send him flying out of the ship. Then they return Cats Lair to its proper place.

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    • Screwloose
      Season 4 - Episode 9
      9/14/89
      6.8

      Jaguara cannot work New Thundera's Gyro on her own. The Thundercats order a robot to aid her in running the Gyro. Screw Loose, a robot who specializes in Gyro's, comes to New Thundera. Mumm-Ra manages to mess up Screw Looses brain so he becomes destructive instead of helpful. The Thundercats must help Jagara get Screw Loose under control, before the entire planet is destroyed (again =]).

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    • Queen of 8 Legs
      Season 1 - Episode 34
      11/7/85
      6.7
      Mumm-Ra finds out that the Kingdom of Webs has a new Queen, Spidera. Mumm-Ra thinks he can lure Lion-O in to Spidera. He transeforms into a diamond fairy and casts a spell on Lion-O. Snarf follows them and gets traped in the Kingdom of Webs. Lion-O trys to save him but ends up having to call the other Thundercats. Eventually they confront and beat Spidera.moreless
    • The Circus Train
      Season 2 - Episode 44
      11/6/86
      6.6
      A bounty hunter known as Captain Bragg comes to Third Earth to help the Thundercats get rid of the Mutants and the Lunatacks. Capt Bragg tricks Wilykat in going with him and they first go after the Mutants. After capturing them, they go to capture the Lunataks. They capture all except Luna and Amuk, who free the other Lunataks, put Bragg in a cage and tie Wilykat to the train's engine. Lion-O and Wilykit arrive to save Wilykat and the Lunataks are defeated. All the Mutants and all the Lunataks are captured and exiled.moreless
    • Sideswipe
      Season 2 - Episode 20
      10/3/86
      5.2
      Snarfer is making a trip back to Third Earth bringing food for the Thundercats, but he gets sideswiped by Chilla. Mandora, evil chaser sees this and pulls Chilla over. Chilla, however, ices Mandora and makes a run for it. Mandora insists on the Thundercats' help to capture Chilla. But when she and Lynx-O go to Darkside to capture Chilla, they fall into one of the Lunataks' traps. It seems that the Lunataks wanted the Braille board so that the Thundercats could not get to them. But when the board dissappears, they try to get the information from Lynx-O as to where it went, but Mandora escapes and frees Lynx-O. She is tricked however and she and Lynx-O are shot up into space in a pod. Lion-O brings them down by using the Sword, and they return to Darkside and Mandora succeeds in capturing Chilla.moreless
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