Dr. Clownius is a fictional character, the main antagonist of the Radioactive Man movie as depicted in the Simpsons episode "Radioactive Man." A mad leader of a gang of clowns, Dr. Clownius blames a rising tide of coulrophobia on stand-up comedians, performance artists, mimes, and most of all, his adversary Radioactive Man. He uses his gang of clowns and his henchman Silly Sailor to torment the Irradiated Crusader. Clownius then masquerades as psychiatrist and TV personality Dr. Swartzwelder (named for Simpsons writer John Swartzwelder) and tries to tarnish Radioactive Man on Gloria Grand's TV show. Radioactive Man and his sidekick Fallout Boy ultimately defeat Clownius' goons and unmask Dr. Swartzwelder, putting an end to the threat of clowns in Zenith City.
- ↑ Radioactive Man: The Official Movie Adaptation