Martin Eugene Mull (August 18, 1943 – June 27, 2024) was an American comic actor whose career included contributions as a musician and painter. He became known on Mary Hartman, Mary Hartman, its spin-off Fernwood 2 Night, and America 2 Night. Other notable roles included Colonel Mustard in the 1985 film Clue, Leon Carp on Roseanne, Willard Kraft on Sabrina the Teenage Witch, Vlad Masters / Vlad Plasmius on Danny Phantom, and Gene Parmesan on Arrested Development. He had a recurring role on Two and a Half Men as Russell, a drug-using, humorous pharmacist. Wikipedia
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