Robot Monster is a 1953 independently made American black-and-white 3-D science fiction film, both produced and directed by Phil Tucker, written by Wyott Ordung, and starring George Nader, Claudia Barrett, and George Barrows. The film was distributed by Astor Pictures.Robot Monster tells the story of Moon robot Ro-Man's mission to destroy all the humans on Earth. It manages to kill all but eight survivors, who have become immune to his death ray.