Air date: 10/3/85

While exploring, the ThunderKittens stumble across an old temple where their curiosity gets the best of them and they release a demon. It's a goat-like creature who gets more powerful as others fear him. It's up to the Thundercats to find a way to overcome their fears and defeat this monster.

Return to Thundera

Air date: 10/4/85

The Mutants unleash a new invincible war robot while Lion-O accidentally travels back in time to Thundera after the eye of Thundera reacts with the Thunderian time capsule. There he meets his father who gives him a scroll containing a Mutant secret.

Dr. Dometone

Air date: 10/7/85

A frog robot swallows Wilykit. It turns out to be piloted by Dr. Dometome the scientist responsible for maintaining the ocean's plug which stops the ocean draining into the Earth's core.

The Astral Prison

Air date: 10/8/85

Jaga is imprisoned within the astral plane for eternity. Lion-O must journey there to release him, however there is no way for him to return.

The Crystal Queen

Air date: 10/9/85

A rare and beautiful bird is captured by the Queen of a crystal kingdom.