Marilyn Hanold
Princess Marcuzan
James Karen
Dr. Steele
Lou Cutell
Dr. Nadir
N
Nancy Marshall
Karen Grant
D
David Kerman
General Bowens
R
Robert Reilly
Col. Frank Saunders / Frankenstein
R
Robert Alan Browne
Martian Crewmember (uncredited)
Robert Fields
Reporter (uncredited)
Bruce Glover
Martian Crewmember / The Monster (uncredited)