Robot Monster (or Monster from Mars) is a 1953 independently made American black-and-white 3D science fiction film, remembered in later decades as one of the worst movies ever made. It was produced and directed by Phil Tucker, written by Wyott Ordung, and stars George Nader, Claudia Barrett, and George Barrows. The production company was Three Dimensional Pictures, Inc. The film was distributed by Astor Pictures.
Robot Monster tells the story of the alien robot Ro-Man's mission to Earth to destroy humanity. He manages to kill all but eight survivors, who have become immune to his death ray. Ro-Man runs afoul of the Great Guidance, his leader, when he becomes attracted to the human Alice. She is the eldest daughter of a surviving scientist, and he refuses to harm her. The Great Guidance must now come to Earth and finish what the Moon robot started.
Plot[]
Ro-Man Extension XJ-2 referred to as just Ro-Man (a creature with an ape-like body and an antenna-equipped helmet covering its head and emits electric flashes), has destroyed all human life on Earth with a Calcinator death ray to prevent Humanity from challenging his race, except for eight humans who remain alive in a protected facility. The survivors are a professor, whose name is never mentioned; his wife; their two daughters, Alice and Carla; their young son, Johnny; the professor's assistant, Roy; and space pilots Jason and McCloud (neither of whom is seen or heard). Both pilots depart in a rocket ship for an orbiting space platform. All eight have developed an immunity to Ro-Man's death ray, having received an experimental antibiotic serum developed by the professor intended to cure all diseases.
Ro-Man must complete the destruction of all humans, even if it means his physically killing them one by one, before his mission to subjugate the Earth is complete. After fruitless negotiations, Ro-Man destroys Jason and McCloud's spaceship that had been sent into space to escape, along with the space platform. The Professor uses the machine intended to contact Jason and McCloud to instead contact Ro-Man, pleading for him to let them go as they pose no threat to him. Ro-Man instead demands to talk to Alice alone, who agrees despite her family's protests. When Johnny leaves to find Ro-Man, Alice ventures out with Roy to find him. Johnny confronts Ro-Man and reveals his immunity to the death ray, causing Ro-Man to begin planning a method to counteract this immunity.
Alice and Roy find Johnny, and after inexplicably kissing each other while still in danger, return to the facility. Alice and Roy announce to the professor their desire to marry. The Professor then declares it the biggest event of the year. Ro-Man contacts Great Guidance (referred to as "The Great One"), leader of the Ro-Man Empire, to announce his plan, and is told that he must complete this goal before the Earth finishes revolving. The marriage is conducted, with the Professor asking the Lord for a victory in Mankind's struggle, Ro-Man discovers Carla outside the facility and strangles her.
Ro-Man's mission is waylaid, however, when he develops an illogical attraction to Alice and cannot bring himself to eliminate her, asking the Great One if he may keep one human but is demanded to continue the mission. Ro-Man rediscovers Alice and Roy, and throws Roy off a cliff. He explains to Alice that the source of his energy lies in his cave, where he takes her and attempts to woo her before being interrupted by the Professor's broadcast. They ask for a quick death at the ravine, and Ro-Man agrees. Immediately after this, the Great One contacts him, angry at him for rejecting the plan to keep the girl and accusing him of bearing free will in violation of Ro-Man law. He gives Ro-Man one last chance to destroy the girl, which Ro-Man refuses to. Johnny distracts him, allowing the family to save Alice. Both Johnny and Ro-Man are suddenly killed by the Great One with a Calcinator blast. The Great One continues the genocide with Cosmic June Rays, which cause prehistoric reptiles to appear; and psychotronic vibrations, which "smash the planet Earth out of the universe".
But Johnny is alive, having just awakened from a concussion-induced fever dream. Up to now, all that has happened has just been his nightmare. His sisters, their mother, and the two scientists, whom the family met while picnicking in Bronson Canyon, rejoice at finding him. Johnny and his family invite the scientists home for dinner; they accept.
Suddenly, Ro-Man, his arms raised in a threatening manner after having just arrived on Earth, walks out of his cave directly toward the audience.