Robot Monster (1953)

Approved  |   |  Sci-Fi  |  25 June 1953 (USA)
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Reviews: 136 user | 51 critic

The monstrous Ro-Man attempts to annihilate the last family alive on Earth, but finds himself falling for their beautiful daughter.



(original screenplay)
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Complete credited cast:
Claudia Barrett ...
Selena Royle ...
Mother (as Selena Royale)
John Mylong ...
Gregory Moffett ...
Pamela Paulson ...
George Barrows ...
John Brown ...


Ro-Man, an alien that looks remarkably like a gorilla in a diving helmet, has destroyed all but six people on the planet Earth. He spends the entire film trying to finish off these survivors, but complications arise when he falls for the young woman in the group. Love that bubble machine! Written by Ray Hamel <>

Plot Summary | Plot Synopsis


Incredible! Unbelievable! Told The Untamed Way! See more »





Parents Guide:





Release Date:

25 June 1953 (USA)  »

Also Known As:

Monsters from the Moon  »

Box Office


$16,000 (estimated)


$1,000,000 (USA)

Company Credits

Production Co:

Show detailed on  »

Technical Specs


Sound Mix:

(Western Electric Recording)

Aspect Ratio:

1.37 : 1
See  »

Did You Know?


Close examination of the Ro-Man's helmet reveal it to be very similar to the helmets worn by the moon-men on the lunar surface in Republic Pictures' serial Radar Men from the Moon (1952). See more »


Obvious hand holding the rocket ship flying to earth. See more »


Ro-Man: [confronts Johnny and explains the Ro-Mens' motive for wiping out Earth's population] Your people were getting too intelligent. We could not wait until you were strong enough to attack us; we had to attack you first.
See more »

Crazy Credits

Automatic Billion Bubble Machine by N.A. Fisher Chemical Products, Inc. See more »


Featured in Cinemassacre's Monster Madness: Robot Monster (2010) See more »

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User Reviews

The movie that gave the world the term "psychotronic". Long live Ro-Man and all who smirk at his awesome calcinator death ray!
23 April 2004 | by (Perth, Australia) – See all my reviews

If you could pick one single movie which fueled the bad sf/horror movie cult popularized by The Golden Turkey Awards and 'Mystery Science Theater 3000' then 'Robot Monster' would be it. Ed Wood's 'Plan Nine From Outer Space' is probably better known to mainstream audiences, especially since Tim Burton's fantastic Wood biopic, but 'Robot Monster' is just as good/bad, and the image of a lumbering goon in an over-sized gorilla suit with a diving helmet and antenna has become an iconic symbol of z-grade sci fi. Even people who don't know Ro-Man's name recognize his likeness and giggle. 'Robot Monster' isn't as inept technically as Wood's worst movies (especially his astonishing 'Glen Or Glenda'), but the script is as dumb as they get, the actors are wooden at best, and the not-so-special effects are laughable. What really makes this movie legendary is the "robot monster" himself, Ro-Man (George Barrows). You can help smirking every time you look at him, and when he pontificates on life and love the movie enters a new dimension of trash par excellence. And just dig that bubble machine and the unexpected (and totally irrelevant) use of stock dinosaur footage! Plus a score from (can you believe it?) Elmer Bernstein. 'Robot Monster' is a movie I never tire of watching. I still get a big kick out of it every time I see it. To say that it is absolutely essential viewing for anybody interested in cult movies is the understatement of the century! 'Robot Monster' is after all the movie that gave the world the term "psychotronic". Long live Ro-Man and all who smirk at his awesome calcinator death ray!

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