Optimus Prime was once a young and simple data clerk and archivist named Optimus, satisfied with his job. He was always anxious of the inequality amongst the Cybertronians and thus, after gaining inspiration from an outspoken gladiator named Megatron's call for an upheaval of Cybertron's society, took a stand to rid the oppressive caste system which hindered the freedom of all the sentient beings on Cybertron. Little did he realize that his instructor, the master archivist Alpha Trion, knew of a secret potential within the data clerk, and that Cybertron's history was at a precipice. He is a loyal soldier who believes in justice and will do all he can to aid the Autobots.

On their way off the planet, Optimus mused that one day Megatron might understand that the two of them were much stronger as a united force. Retribution Ask Vector PrimeTransformers: War for Cybertron is a third-person shooter video game based on the Transformers franchise, developed by High Moon Studios and published by Activision. It was released for Xbox 360, PlayStation 3, Nintendo DS and Microsoft Windows in June 2010. Two portable versions were released for the Nintendo DS, one featuring an Autobot campaign, the other a Decepticon campaign. A game for the Wii, Transformers: Cybertron Adventures, was developed by Next Level Games and utilizes the same characters and setting as War for Cybertron. Unbeknownst to either party, the Quintessons harvested the energy exerted by Optimus to power up an abandoned space bridge located beneath Aquatron, from which they eventually launched a Sharkticon invasion force to retake Cybertron, intending to re-colonize it and enslave its inhabitants once more. With Optimus and Megatron no longer needed, they too were plunged into the execution pit. In the fight for survival, Optimus reactivated his Matrix, giving both him and Megatron additional power, even though the Quintessons once again launched a stream of propaganda to further destabilize him. The two managed to escape and came face-to-face with the Gamekeeper and a mysterious set of carvings depicting a Megatron-like being surrounded by Sharkticons. Megatron killed the Gamekeeper, but Optimus had doubts about the carving's veracity. The temporary alliance fractured as soon as Megatron discovered the decoy Matrix hidden in Xeros' inner sanctum. He plunged the Sharkticon Matrix of Leadership into his chest, transformed into a Sharkticon-like form, and hurled Optimus down the elevator shaft. Megatron's involvement in the preceding events, or events mostly similar, were also chronicled in the comic " Transformers: War for Cybertron." Megatron and his Decepticons built an Energon Drain weapon, which would render them unstopable if left unopposed. Optimus Prime and his Autobots intervened, and destroyed the weapon. Transformers Prime: Pulsar Defense Transformers Prime: Decepticon Strike

I could feel all my bad parts being drawn away into this thing. All my nasty The duo eventually encountered the Gamekeeper, who was guarding the carvings that the Sharkticon rebels had created. The Gamekeeper taunted them, and revealed that the Quintessons were staging another invasion of Cybertron as they spoke. Megatron tore out the monster's eyes and eventually killed him. The Decepticon leader was intrigued by the carvings, although Optimus was skeptical of their veracity. The two eventually discovered Xeros, who was manipulating his Sharkticon servants with a decoy Matrix. Believing it to be the Decepciton Matrix he was promised, Megatron grabbed it and shoved it into his chest.Megatron's designation as an energon miner was "D-16". [2] Megatron's original Japanese ID number was "16". Takara would eventually change the numbering system using a "D" to denote Destrons. So Megatron's Japanese ID number could retroactively be considered "D-16". Gerstmann, Jeff (2010-06-25). "Transformers: War for Cybertron Review". Giant Bomb. Archived from the original on 2010-06-27 . Retrieved 2010-06-22. However, when Activision began releasing more information on the game and the release date was closing in, this teaser feature was removed. For a new mission, Optimus selected Ironhide and Warpath, and the team ventured to the entrance of the core, where a corrupted Omega Supreme was being tortured. After a prolonged battle, the Autobots defeated the torturers and freed Omega Supreme from the Dark Energon influence. Omega Supreme escaped, and the Autobots found some space slugs to use as steeds. One long journey later, they reached the core and defeated a corrupted slug. Unfortunately the core itself had become contaminated, and informed Optimus as much. The only solution was for the core to reboot, which would take millions of years, during which the planet would be unusable, and Optimus realized that the Autobots would have to leave their home. Before shutting down, the core revealed the Matrix of Leadership, which it installed inside Optimus Prime's chest.