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Robot Monster (1953)

Approved | | Sci-Fi | 25 June 1953 (USA)
The monstrous Ro-Man attempts to annihilate the last family alive on Earth, but finds himself falling for their beautiful daughter.


Phil Tucker


Wyott Ordung (original screenplay)

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Complete credited cast:
George Nader ... Roy
Claudia Barrett ... Alice
Selena Royle ... Mother (as Selena Royale)
John Mylong ... The Professor
Gregory Moffett Gregory Moffett ... Johnny
Pamela Paulson Pamela Paulson ... Carla
George Barrows ... Ro-Man the Monster / Great Guidance
John Brown John Brown ... Ro-Man / Great Guidance (voice)


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 <hamel@primate.wisc.edu>

Plot Summary | Plot Synopsis


Adventures Into The Future in New TRU-3 Dimension See more »




Approved | See all certifications »

Parents Guide:

View content advisory »






Release Date:

25 June 1953 (USA) See more »

Also Known As:

Monsters from the Moon See more »


Box Office


$16,000 (estimated)

Gross USA:

See more on IMDbPro »

Company Credits

Show more on IMDbPro »

Technical Specs


Sound Mix:

Mono (Western Electric Recording)

Aspect Ratio:

1.37 : 1
See full technical specs »

Did You Know?


In the popular 1980 book "The Golden Turkey Awards" by Harry and Michael Medved, this movie won the award for "The Most Ridiculous Monster in Movie History". See more »


Ro-man goes to tie Alice up, but decides it will take too long, so he knocks her unconscious. He answers his message, and then turns around to see a fully conscious Alice tied up. See more »


Great One: [his last line, when "Extension XJ-2" can't bring himself to kill Alice] You wish to be a human? Good. You can DIE like a human!
[Takes out XJ-2 with another Cosmic Blast, then... ]
Great One: Human elements still roam Planet Earth! I, the ruler of the Ro-Men, shall send our Cosmic J-Rays... from which will spring prehistoric reptiles to devour whatever remains of life! Next, Psychotronic vibrations will smash the Planet Earth out of the universe!
See more »

Crazy Credits

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

Alternate Versions

The 3-D Rhino Home Video print (which also include a variant pre-titles sequence) inserts a black bar over Claudia Barret's chest during the bodice-ripping sequence, leading viewers to believe something more was shown then her padded bra. The Rhino version also includes extraneous added sound effects and at least one badly-looped line of dialogue where Ro-Man says "Hmmm. Maybe I can get a date with the girl." See more »


Referenced in The Sci-Fi Boys (2006) See more »

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User Reviews

Must be watched once in your lifetime with your closest friends
20 October 2004 | by FranklinTVSee all my reviews

How can you approach a recent repeat viewing of a movie you first saw 20 years ago in a double feature with 'Plan 9 from Outer Space', which to this day is still the most joyous, funniest cinema experience you have ever had. Without these two films, I would never have been seduced by the wonderful Golden Turkey Awards books, nor started my secret, indulgent near obsession with enjoying bad movies.

And as bad movies go, Robot Monster is simply wonderful.

Its almost pointless to go about what is in store for the unwary viewer, except that they will encountering a cinematic experience they will still be talking about in 20yrs time. However, I cannot complete this review without mentioning my two most favourite magic moments.

The first magic moment is this wonderful scene at the grave of the recently buried little brat girl (who thankfully is terminated extremely efficiently by Ro-man). Suddenly, in the top left corner of the screen is this small dot. Which starts slowly getting larger and larger. You eventually realize it's a shirtless George Nader running to the graveside. George keeps jumping rocks and branches as he eventually makes his way to the grave. Keep running George. Eventually, he finally gets to the grave, to tell the parents that Ro-man has their adult daughter. At which point, he instantly collapses, and is immediately pronounced dead. The timing is so exquisite, you will rewind the film, just to see this wonderful setup and delivery, again and again.

The second magic moment is a touching piece of prose which I feel has been ignored by scientists / engineers around the world as a personal incantation when confronted with a crisis. Basically, Ro-man doesn't want to kill the girl because he is having 'strange feelings' towards her (much like the strange feelings my neighbors dog had for my leg when I visited a few days ago). Alas, his superior wants her (and everyone else) killed. We then have this lovely 'to camera' moment, when a creature, consisting of the body of a gorilla, and the head of a deepsea diving helmet plus antenna, laments to the viewer:

'I cannot, yet I must. How do you calculate that? At what point on the graph do must and cannot meet? Yet I must. But I cannot'.

If only Macbeth and Hamlet had consider life as deeply, they might not have died.

Robot Monster is definitely recommended viewing – just don't do it alone. Invite around your closest friends, and you will be bonded with enough 'But what about when …' experiences for the next two months. And how many modern films can claim to be able to do that.

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