Prison Guard

Sheriff Jim Graham

El Diablo

Proctor

Ryan Kavanaugh (8 episodes)

Ralph Maloney

Professor Burket

Grumpy

Church Friend Pete

Nausicaan Captain (1 episode)

Alien Captain (1 episode)

SWRB Chief (2 episodes)

Bartender

Detective Chuck Driscoll (1 episode)

Attorney Tinsley (1 episode)

Mickey Mulfreed (1 episode)

Mr. O'Brien

Parker

Alpha Hirogen / Nazi Commandant (2 episodes)

W. C. Cantrill

Security Buck

(1 episode)

Clancy Butler

Tony Maddocks (1 episode)

Agent Douglas (1 episode)

John Symes

Sgt. McNamara (2 episodes)

Legate Kell (1 episode)

Chief Burke (1 episode)

Wilder

Mr. Kelso

Head Illinois State Trooper

Timmy's Father

Detective Delaney (3 episodes)

Bill Carrigan

Disposal Worker (1 episode)

Mo (1 episode)

Undercover Bum

Zagon's Aide

Homicide Detective (3 episodes)

Homicide Detective

Hank (2 episodes)