Earth year 1984, a volcanic eruption jarred the ship's computer, Teletraan I, back to life. The computer reactivated the Decepticons, programming them with new Earth-based disguise modes. As a parting gesture, Starscream fired upon the Autobot ship, creating a landslide. The vibrations from that landslide knocked Prime into the path of the computer's restoration beam, restoring him to life, thus beginning the war anew on Earth. Over the course of the next twenty years, the Decepticons succeeded in seizing control of all of Cybertron, forcing the Autobots to operate from their new city on Earth and two bases on Cybertron's moons. In the Earth year 2005, Prime, stationed on Moonbase One, dispatched troops to Earth to acquire energy for an upcoming strike on Cybertron. The Decepticons, however, got wind of the plan and used the shuttle run to attack Autobot City. A distress call summoned Prime and support troops to Earth. In the fearsome, ensuing battle with Megatron, Optimus Prime sustained fatal wounds, but not before turning the tide of battle and forcing the Decepticons to flee. Despite the efforts of Perceptor, Optimus Prime went offline after passing the Matrix and role of leader to Ultra Magnus, despite protestations. His last words were "Until that day... 'til all are one." The Matrix later fell into the hands of Galvatron, a recreated Megatron, and was finally taken back by the young Autobot Hot Rod. As the Matrix reformatted him, Hot Rod heard the voice of Optimus Prime saying, "Arise, Rodimus Prime." Instead of giving the Matrix back to Ultra Magnus, Rodimus decided to take the duty of leadership, with Magnus as his second-in-command. Later, during one of those times when Rodimus was in command, a small group of Autobots and human allies Spike and Daniel Witwicky fled to the Autobot Mausoleum from the Decepticons. There, they discover that Optimus Prime was somehow resurrected. Rodimus then returns the Matrix to Optimus, reverting to his old self. However, Optimus does not act the same as before. He also appears to be mind-controlled, causing him to go insane and commit violent acts, such as attempting to kill the group of Autobots and to trick the other Autobots on Cybertron to fly into a trap set by the Quintessons. As Hot Rod confronts him, Prime has a flashback of his resurrection at the hands of the Quintessons, who reprogrammed him in order to lead the