This ThunderCats t-shirt features a classic poster that shows Panthro, Lion-O, Cheetara and Tygra prepared to battle the evil Mumm-Ra. The iconic cartoon ThunderCats followed the heroic Thunderians who fled their dying planet, and were chased by the Mumm-Ra and the Mutants of Plun-Darr to Third Earth. There, the ThunderCats and Mutants battled for control of the Sword of Omens.