who worked in Iacon, under the wing of Alpha Trion. Orion was chosen by the High Council and became "Optimus Prime", upon being entrusted with the Matrix of Leadership by Primus himself. Voice actors Optimus Prime is primarily voiced by Peter Cullen in most of his incarnations, who voiced him in the original series. Following the production of the 2007 film, Cullen reprised his role for the sequels and supporting media and would even voice Optimus in later series such as Transformers: Prime. Optimus has been voiced by a number of other voice actors in other series such as Neil Kaplan, Garry Chalk, and David Kaye in the series Transformers: Robots in Disguise, the Unicron Trilogy, and Transformers Animated, respectively. Comics Marvel Comics In the series released by Marvel Comics, before the Great War broke out on Cybertron, the robot who would be Optimus Prime, before he received the Matrix of Leadership from Sentinel Prime, was a Transformer of note, displaying his skills in the Infraformers Sharpshooting Competition. When the war began, Prime quickly made a name for himself as a combat leader of the Autobots. On a mission with the Triggerbots to stop Megatron from claiming the Underbase, Prime was forced to jettison the massive databank into space to prevent anyone from acquiring its power. With this action, he proved his wisdom and skill to the Autobot Council of Elders. He continued to move up in rank, eventually becoming the field command over the Autobot armies. Four million years ago, Cybertron, shaken from its orbit and drifting through space, became threatened when it floated into the path of an asteroid field. Prime led a group of elite Autobot warriors on the Ark, the Autobot starship, on a mission to destroy the asteroids. Although the mission was successful, during the aftermath of this mission, the Ark was attacked by Decepticons hoping to overpower their weakened foes. Intent on keeping the secrets of the Ark from the Decepticons, Prime set the craft on a suicide course, crashing it into the then prehistoric planet Earth. Later, the Transformers were all transported to Cybertron by Primus to battle Unicron. Although Unicron had tainted the Matrix after killing Thunderwing, Prime managed to reacquire and purify the Matrix. Prime then sacrificed his life one more time to destroy Unicron by plunging the Matrix into his maw. The Powermaster process, however, had been working to fully