Reparto
Richard Eyer
Timmie Merrinoe
Philip Abbott
Dr. Tom Merrinoe
Diane Brewster
Mary Merrinoe
Harold J. Stone
Gen. Swayne
Robert H. Harris
Prof. Frank Allerton
Alexander Lockwood
Arthur Kelvaney
Gage Clarke
Dr. Bannerman
Than Wyenn
Prof. Zeller
Ralph Votrian
1st Gate Sergeant
Michael Miller
2nd Gate Sergeant
Rayford Barnes
Capt. McLaren (uncredited)
Helen Kleeb
Miss Vandergrift (uncredited)
Alvy Moore
Scientist (uncredited)
Gary Vinson
Young soldier (uncredited)
Marvin Miller
Robby the Robot (voice) (uncredited)
Robby the Robot
Robby
