Martin Mull

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. Provided by Wikipedia