The need to have someone guarding Cats Lair has already been established in the show. However, this time when the battle took place far from Cats Lair and against a new enemy with no involvement by Mumm-Ra or the Mutants, all the Thundercats showed up to fight, leaving Cats Lair completely empty. With Mumm-Ra and the Mutants being back there, it would have been an easy target for them to attack.
When Panthro took off on the Gomplin, he was alone. But when he and the Gomplin showed up at the fight, he had the Thunderkittens with him.
Thunderkitten Lariat Powers: (First Use) They can extend in size to a great length.
Goof: After Lion-O, Cheetara, and Tygra get out of the ThunderTank to fight the Technopede, they put their hands together and shout, "Thundercats Ho!" When they initially put their hands together, Lion-O's hand is on bottom and Tygra's hand is on top, but when the view goes to a further away shot as they pull their hands away to shout, Lion-O's hand is suddenly on top.
Under water, the ThunderTank doesn't need to drive on the sea floor. It can swim through the water as well.
The ThunderTank is equipped with an alarm system which will activate allowing anyone in it to know the alarm system at Cats Lair has gone off. This enables any Thundercat away from the Lair to know if there's possible danger back home so they can return.
Turmagar: My city is in ruins. We are too late! The infernal Technopede has conquered my people. We can no longer protect the source of the river. And the lands will wither and die.
Lion-O: Hang in there, Turmagar. We'll straighten it out.
Panthro: Take the ThunderTank, Lion-O. Sounds like you'll need it. I'll stay here and fix this... monster.
Turmagar: That, sir, is not a monster. He is a Gomplin, loyal and brave.
The Giant Technopede is a large and powerful robot of unknown origins.
The Tuskans are walrus-like creatures who guard the source of the river.
Mumm-Ra and the Mutants did not appear in this episode.
A Gomplin looks like a flying dragon. They were domesticated by the Tuskans. The Tuskans equiped the Gomplins with airplane parts, including airplane wings and motors, to fly with, inspite of the Gomplins already having natural wings.
The Black Widow Shark makes a reappearance in this episode.
First Appearance: (location) Tuskania and the source of the river
First Appearance: Turmagar the Tuska, the Tuskans, the Gomplins, the Vampire Mermaid, and the Giant Technopede