Regular Show The Movie Official Trailer -[ Please SUBSCRIBE, LIKE and COMMENT for more! ]--- The Regular Show/Uncle Grandpa panel featured JG Quintel (Creator, Voice of Mordecai), William Salyers (Voice of Rigby), Sean Szeles (Supervising Producer), and Sam Marin (Voice of Benson, Pops, Muscle Man), alongside Uncle Grandpa's Pete Browngardt (Creator, Voice of Uncle Grandpa), Eric Bauza (Voice of Bellybag), and Kevin Michael Richardson (Voice of Mr. Gus).