Dr. Steven Rydell 1 episode, 2004
Det. Steve Rafferty (22 episodes, 2001)
Capt. George Tanner, Gateway Station Commander
Brad Cavanaugh (1 episode, 1999)
24th Phantom / ... (35 episodes, 1994-1996)
John Corben / ... (1 episode, 1995)
Jacobi Myers (1 episode, 1998)
Raymond Bell / ... (2 episodes, 1992-1994)
Darman H. Keene / ... (2 episodes, 1993-1995)
Nick Moore (43 episodes, 1985-1989)