Phil LaMarr born, January 24, 1967, is an American actor, comedian, and writer. He voices the Regression Simulator that BMO and Jake use to hypnotize Finn as well as an Bathboy Gang member named "Mo-Mo" in the Adventure Time episode, "The Vault."
Phil was also one of the original cast members of Mad TV, and appeared as Marvin in the film Pulp Fiction. His voice roles include the title character of Samurai Jack, Hermes Conrad in Futurama, Wilt in Foster's Home for Imaginary Friends, Ollie Williams and Judge Dignified Q. Blackman in Family Guy, and both John Stewart/Green Lantern and Virgil Hawkins/Static in the DC Animated Universe.