This show has ended
Premiered July 29, 2011
Country United States
Genres Action, Adventure, Animation
After Thundera is attacked by the lizard people, Lion-O leads the ThunderCats on a quest for the Book of Omens, the one artifact that could guide them to victory. But he'll have to face villains like the ancient evil sorceror Mumm-Ra and the dangerous lizard general Slithe. Luckily, he has the Sword of Omens and its amazing powers at his disposal.