

Season 1 • Episode 26
LatestIn the season finale, Mumm-Ra's forces find the ThunderCats and the Tech Stone in Avista City. An incredible battle ensues for the stone as Lion-O finds himself betrayed by a trusted ally.
The ThunderCats are on the move! After the kingdom of Thundera is attacked by the lizard people, Lion-O leads Tygra, Cheetara and the other heroes on a quest for the Book of Omens and the magic stones of legend. But he'll have to face villains like Mumm-Ra, the ancient evil sorceror, and Slithe, the dangerous lizard general. Luckily, he has the Sword of Omens and its amazing powers at his disposal.
Direction
Studio 4°C anime influence hits different for 2011 Cartoon Network.
Writing
Lore dumps that actually land? The Thundera backstory slaps.
Production
That orchestral score? RIP your expectations for kids' TV.
Trivia, insights & behind the scenes
Warner Bros. cancelled it after ordering toy prototypes that never hit shelves—classic corporate sabotage of quality animation.
The ThunderCats' dead parents and kingdom destruction in episode one directly mirrored Cartoon Network's darker post-Batman: TAS era ambitions.