When Unicron tries to destroy Cybertron, his energy was sucked out of him by the Autobots which restores Megatron to life Afterwards, he disbands the Decepticons realizing the error of his ways and retreats to parts unknown.
When Unicron tries to destroy Cybertron, his energy was sucked out of him by the Autobots, he disbands the Decepticons realizing the error of his ways and retreats to parts unknown. These Autobots restores Megatron to life Afterwards.