Meet ThunderCats characters like Lion-O, Tygra, Cheetara and others as they go on a quest for the Book of Omens and the magic stones of legend. But the heroes will have to face villains like Mumm-Ra, the ancient evil sorceror, and Slithe, the dangerous lizard general. Luckily, Lion-O has the Sword of Omens and its amazing powers at his disposal. Meet all your favorite characters from ThunderCats and get more info on Cartoon Network. ThunderCats, ho!