Douglas "Doug" Quaid/Carl Hauser

Carl Hauser is Vilos Cohaagen's most trusted friend who later became known as Douglas Quaid.

1990 Film
Carl Hauser is one of Vilos Cohaagen's most trusted men and his closest of friends later on he and Cohaagen hatched a plan to rid Mars of the mutants forever. Hauser essentially had his identity erased from the world and from his own mind, and a new one was injected. He walks the Earth now as Douglas Quaid, mild-mannered husband with incredibly huge muscles and a strange accent. And through a series of coincidences (he thinks), Quaid finds himself on the run from the government, having discovered his whole life has been a sham. He must get to the bottom of this, and he's got a nagging feeling the bottom of things will be found on Mars. He travels there to discover more clues to his true identity. He encounters the mutants and eventually meets their spiritual leader, Quato. The psychic stresses to Quaid the importance of unlocking the memories trapped in his mind, and through deep meditation, he does. Quaid and Melina are taken to Cohaagen, who reveals the Quaid persona was a ploy by Hauser to infiltrate the mutants and lead Cohaagen to Kuato, thereby wiping out the resistance. Cohaagen orders Hauser's memory to be reimplanted in Quaid and Melina to be programmed to be Hauser's slave, but Quaid and Melina escape into the mines where the reactor is located. They work their way to the control room of the reactor, killing Benny, Richter, and the rest of his men. While running away in the reactor, Cohaagen confronts them in the control room with a bomb, but Quaid accidentally sets it off, blowing out one of the walls of the control room and causing an explosive decompression. Quaid grabs on the wall and knocks out Cohaagen, which causes him to land on the surface of Mars. Due to the low atmospheric pressure, his internal fluids boil out, killing him. Quaid manages to activate the reactor before he and Melina are also pulled out. The reactor releases air into the Martian atmosphere, saving Quaid, Melina and the population of Venusville. As humans walk onto the surface of the planet in its new atmosphere, Quaid takes a moment to wonder whether he is still living the memory before turning to kiss Melina.