Martin Eugene Mull is an American actor, comedian, painter, and recording artist. He is well known for several roles in film and TV, such as Col. Mustard in the 1985 adaptation of Clue. He also had recurring roles in TV, such as Leon Carp on ABC's Roseanne and Gene Parmesan on Arrested Development and Crawford Whittemore on Fox's Dads. He even voiced Vlad Masters/Plasmius on Nickelodeon's Danny Phantom.
For Disney, he played Frank Maris in Lots of Luck and Doug Robinson in Beverly Hills Family Robinson. He also voiced Governor Kevin in Teamo Supremo and Paul Prickly in the Recess episode "The Challenge". He even appeared as an agoraphobic hermit in The Golden Girls season 6 episode "Snap Out Of It".