Ogre is believed to be a biological weapon abandoned on earth by an ancient alien race, while he is additionally worshipped by ancient Aztecs as the "God of Fighting". In "Tekken 3" (1997), Heihachi Mishima sends his personal army, the Tekken Force, to search a temple in central Mexico, but they are promptly obliterated by Ogre. Having witnessed his power firsthand, Heihachi seeks an opportunity to use him in hopes of creating the ultimate life form while staving off his own aging process, and therefore stages the third edition of the King of Iron Fist Tournament held throughout the "Tekken" series in order to draw Ogre out. In the meantime, Ogre kills King in combat, beats Baek Doo San into a yearlong coma, and supposedly kills Jin's mother Jun Kazama. Paul Phoenix defeats Ogre in the tournament, but he then quits the competition under the impression that he has won, when he had one last opponent remaining in Ogre's true form, True Ogre. Heihachi then collects blood samples and skin tissue from the creature in order to splice his genomes with his own, but the project is unsuccessful, as he is missing a key ingredient called the "Devil Gene", which the series protagonist Jin Kazama and his father Kazuya possess. In "Tekken 5" (2004), Ogre is playable in the "Arcade History" mode and is the final boss of the "Devil Within" minigame, where clones of him and Heihachi are defeated by Jin Kazama.