This ThunderCats t-shirt features a collage of the iconic characters Mumm-Ra, Lion-O, Snarf, and Cheetara. In ThunderCats, Mumm-Ra is the leader of the Mutants of Plun-Darr, a race that is trying to steal the ThunderCats' Sword of Omens. The ThunderCats battle Mumm-Ra and his mutants to keep the universe safe. The heroic ThunderCats include Lion-O, Snarf, and Cheetara.