Sam Marin (born March 4, 1984) is an American voice actor on Regular Show. He voices Benson, Pops, and Muscle Man. He started voicing Pops and Benson in "The Pilot", and starts voicing Muscle Man in "Just Set Up the Chairs". Marin also voices a lot of secondary/minor characters, such as The Hammer, Sensai and RGB2 He also voiced characters on another show J.G. Quintel boarded for, The Marvelous Misadventures of Flapjack. He also voiced Clarence and Gareth in two episodes of Adventure Time.