Fleeing after the destruction of Cybertron, the Autobots sought refugee and stumbled upon Earth. Being tracked down by the Decepticons, both factions took the disguise of technology (specifically vehicles). The Autobots, aligned themselves with the Humans sharing common ideas, peace, liberty and freedom to defeat and end the Decepticons once and for all.
In game Edit
The Autobots are one of the four factions including Autobots, Decepticons, Maximals and Predacons. They are a group of Transformers who broke away from the Decepticons in order to seek peace.