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