John Koenig
Helena Russell
Alan Carter
Sandra Benes
Dr. Mathias
Maya / Servant of the Guardian
Victor Bergman
Tony Verdeschi
Paul Morrow
David Kano
Kate
Bill Fraser / Fraser
Yasko
Ben Vincent
Medic (uncredited) / Gerry (uncredited)
Creature / Lizard Animal
June
Eagle Pilot (voice) / Bannion (voice)
Guido Verdeschi / Parks
Ed Spencer
Alibe
Carla / Female Alien
Main Mission Operative (uncredited) / Stewardess
Mentor / Cabot Rowland
