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