Megatron responds by destroying the Autobot base, and Optimus is mortally wounded staying behind to ensure everyone else escapes through theВ GroundBridge. Though the keys are successfully gathered, Megatron gains possession of them and attempts to use the Omega Lock toВ cyberformВ Earth, forcing Optimus to destroy the Lock to save Earth. Trion also orders them to find theВ Omega Keys, which will activate theВ Omega LockВ and restore Cybertron. The Autobots and Decepticons' struggle becomes a competition for Cybertronian artifacts strewn across the planet, which turn out to have been placed there byВ Alpha Trion, who foresaw the Autobots coming to Earth. With this new body, Silas destroys his own organization and attempts to join the Decepticons, only to becomeВ Knock Out's new dissection study. In the ensuing confrontation, Silas is fatally injured, forcing MECH to graft him into Breakdown. The Autobots also contend with the human terrorist organization,В MECH, headed by former military operative Leland Bishop, akaВ Silas, who targets the Cybertronians for their technology, capturingВ Breakdown,В Bumblebee, and Starscream for parts, and building aВ doppelgГ¤ngerВ controlled by Silas. By using information fromВ Vector SigmaВ downloaded to theВ Key, Jack restores Optimus's memory. The Autobots and Decepticons eventually make the startling discovery that Earth is the body ofВ Unicron, forcing them to ally and prevent his consciousness from reasserting control over the planet.В Optimus PrimeВ unleashes theВ Matrix of Leadership, but at the cost of losing his memory, thereby allowing Megatron to manipulate him into joining the Decepticons' ranks. After Megatron's revival, Starscream flees after showing he is unable to prove his loyalty to theВ Decepticon leader. When the Decepticons resurface, the Autobots take three child witnesses,В Jack Darby,В Miko Nakadai, andВ Raf EsquivelВ under their protection.В MegatronВ returns having discoveredВ Dark Energon, which grants him the power to resurrect the dead, but is injured, withВ StarscreamВ taking command in his absence. However, the presence ofВ TransformersВ on Earth is not generally known among the civilian population. Team PrimeВ lives onВ Earth, three years after their last confrontation withВ Decepticons.В Autobot Outpost Omega OneВ is located in a convertedВ missileВ silo inВ NevadaВ provided by theВ United StatesВ government, with Special AgentВ William FowlerВ acting as their liaison.

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