Ro-Man, an alien robot who greatly resembles a gorilla in a diving helmet, is sent to earth to destroy all human life. Ro-Man falls in love with one of the last six remaining humans, and struggles to understand how his programming can instruct him to kill her while his heart demands that he can't.


Robot Monster (1953)
Moon monsters launch attack against Earth! How can science meet the menace of astral assassins? New Science Fiction Thrills!
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George Nader
Roy

Claudia Barrett
Alice

Gregory Moffett
Johnny

John Mylong
The Professor

Selena Royle
Mother
PP
Pamela Paulson
Carla

George Barrows
Ro-Man the Monster / Great Guidance

John Brown
Ro-Man / Great Guidance (voice)
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