Cast Credits Knightmare (1987) Starring as Pickle The Hitchhiker's Guide to the Galaxy (1981) Guest starring as Marvin (4 episodes) Episode 1x06: Episode 6 (Feb 9, 1981) Episode 1x05: Episode 5 (Feb 2, 1981) Episode 1x03: Episode 3 (Jan 19, 1981) Episode 1x02: Episode 2 (Jan 12, 1981) View 1 more View 1 less