When Lion-O is anointed lord of the Thundercats he is wearing a red cape. Wilykit gives him his sword and claw shield back, then Cheetara puts a crown on his head.
When Lion-O is finally crowned, among those in the audience on the bridge to Cats Lair are Snarf and Snarfer, Mandora the Evil Chaser and Quick Pick, Willa, Nayda, and the Warrior Maidens, Dr. Dometone, Hachiman, the Unicorn Keepers and a unicorn, Safari Joe's robot, Snowmeow, a ninja, Molemen, Brutemen, Wollos, Berbils, and Trolligs.
When the episode opens, there is a crown and robe laying next to the Sword of Omens and Claw Shield in Cats Lair.
Maftet, the Lynx god, told Lion-O he could have been a Lion god. He then told Lion-O that the problem would then be that he too would be weak since Maftet had been weakened from a lack of worship.
At the end of the episode it appears that the ancient spirits of evil, living inside the statues in Mumm-Ra's pyramid, are responsible for bringing him back into his physical form. This is the first time Mumm-Ra has returned from prior disentigration.
Jaga makes two quick appearances in this episode. First Lion-O tells him he doesn't want his advice and that he needs to make his own decision. Then after he defeats Mumm-Ra, Jaga confirms he will always be there for him.
The path to Mumm-Ra's inner chamber is led to by the River of Doom which flows underground.
The Eye of Thundera demonstrates it knows when Lion-O is in danger, even when separated from him. At the beginning of the episode, it growled from Cats Lair. Panthro said that the sword was agitated in anticipation of Lion-O's trial against his most deadly enemy.
It is revealed that Mumm-Ra's life / stamina is linked to his sarcophagus. When it becomes damaged Mumm-Ra is weakened, and when destroyed Mumm-Ra turns to ash and is blown away.
Lion-O: If I am to be the true lord of the Thundercats, I have to make my own decisions.
Jaga: You are right. And by making your own decisions and by making them work, you've passed the final trial. (starts to disappear)
Lion-O: Jaga, wait! (Jaga disappears completely) Does that mean I'll never see you again?
Jaga: No, Lion-O, I'll always be here when you need me.
Lion-O: You've always been my guide and teacher, Jaga, and my friend. But this time, I must find my own way.
Jaga: Very well.
Lion-O: Jaga! Wait!
Jaga: Why? You have made your decision, Lion-O. (disappears) You don't need my advice.
Jaga: Your nerves are on edge, Lion-O. You must rest before you confront Mumm-Ra.
Lion-O: Creatures of darkness are best fought at night, Jaga.
Mumm-Ra: The upstart Lion-O plans to attack me. You must intercept and destroy him. He will be without the Sword.
Jackalman: (yawning) Can't it wait till morning?
Mumm-Ra: No! It cannot! He is already on his way.
Monkian: (sarcastically) What about your own invicible powers, your ever-living lordship?
Slithe: Surely you could crush him yourself with one flick of your mighty hand?
Mumm-Ra: You mock me, miserable Mutants?! Do as I command!
Mumm-Ra: So, Lion-O has to destroy me... the ever-living lord of evil. It will indeed be his final trial. By the end of the day, Lion-O will be no more!
The Inflamor makes his second appearance in the series. His first appearance was in All that Glitters.
Incubi is an evil creature that lives in a cocoon along the River of Doom.
First Appearance: Maftet, the Lynx god and Incubi
Vultureman did not appear in this episode.