Exidor is Mork's best friend and adoptive father, an eccentric -- and probably mentally ill -- man who regards himself as a prophet. He is often seen wearing a flowing white robe with a blue sash. He was the leader of a cult called "The Friends of Venus," of which he was the only (visible) member. Later, when the Venusians abandon him, he begins to worship O.J. Simpson. Exidor later discovers reincarnation and voodoo. When Mork falls into an alternate Wonderland universe, Exidor is Exidon, the mad King of the Glums, who's outlawed humor.