Alistar Crane / ... (40 episodes, 2005-2008)
Baron Reyland (3 episodes, 1998)
Nathan Babbott (1 episode, 1998)
Del Douglas (18 episodes, 1997-1998)
Mike Armstrong (6 episodes, 1997-2002)
Hawkeye / ... (20 episodes, 1994-1996)
Bill Taylor (8 episodes, 1996-1998)
Adam Blakely (2 episodes, 1994-1995)
Jake Larner (5 episodes, 1984)
John Carson / ... (2 episodes, 1983-1984)
Bob Danish (2 episodes, 1982-1983)
Brian Harms (1 episode, 1984)
Billingsley / ... (2 episodes, 1981-1982)
Roy Ralston (6 episodes, 1983)
Jeremiah Taylor (episodes 1-4) (unknown episodes)
Hober / ... (2 episodes, 1977-1978)
Ship's Security Chief Flannery
Officer #2 1 episode, 1974
Sean Donely (2 episodes, 1984-1994)
Dr. Dan 'Danny' Stewart (aka Jimmy Lowell) #4 (unknown episodes, 1974-1976)
Ike / ... (2 episodes, 1974)
Self - Co-Host / ... 6 episodes, 1986