Mumm-Ra is the main antagonist of ThunderCats, the animated series that premiered in 1985. A sorcerer mummy serving the Ancient Spirits of Evil, he opposes Lion-O and the ThunderCats from his Black Pyramid on Third Earth and was voiced in the original series by Earl Hammond. His transformation sequence became one of the show's most repeated rituals, quoted by fans and reused in remixes, retrospectives and meme edits. Its old-school cartoon delivery keeps it recognisable decades later, even to viewers who know the chant before they know the series.