Buy ThunderCats t-shirts, sweatshirts and merchandise from us. Fast delivery ✓ High quality ✓ Large selection ✓ ThunderCats is a cartoon series from the 1980s about a group of humanoid felines from the planet Thundera. The main characters are Lion-O, the leader of the group, Cheetara, the fastest member, Panthro, the strongest member, and WilyKit and WilyKat, a pair of siblings who are skilled in acrobatics. The group is often opposed by Mumm-Ra, an evil sorcerer who wants to take over the world. The series was popular in its day and has since been revived several times. We have ThunderCats hoodies, sweatshirts, mugs and much more at great prices.