Autobots

''"We are autonomous robotic organisms from the planet Cybertron, also known as... Autobots." ''—Optimus Prime describes the Autobots

The Autobots are a group of Cybertronian freedom fighters led by Optimus Prime and (on some occasions) Bumblebee. Their primary foes are the tyrannical Decepticons.

The Autobot symbol long predated the Autobot Cause and is used to represent Cybertron across the galaxy. Eons later, when Orion Pax wanted to change society, he adopted the symbol for his movement. His movement was opposed by the Decepticons who had similar goals but different means of obtaining those goals. When the rank of Prime was given to Orion, now Optimus Prime instead of Megatron, the Decepticons waged a full-scale war on Cybertron. Given that the Autobots had several loyalists due to Optimus' new status, the Autobots fought back, each side wishing to impose their view of a just society on the planet. So many Autobots were lost in the devastating conflict. When Cybertron's Core shut down, the Autobots left to continue fighting across the galaxy.

A number of Autobots and Decepticons would soon arrive on the planet Earth, where their battles would continue. On Earth, the Autobots befriended the local Human population and discovered the presence of ancient Relics from Cybertron on the planet. The Autobots were known to use various types of weaponry in battle against the Decepticons, such as Decepticon Hunters and the Magnus Hammer. Eventually, the Autobots gained a major victory over the Decepticons at Autobot City, where Optimus overpowered Megatron and forced the Decepticons to withdraw. Sometime afterward, the Autobots assembled an elite team to protect Cybertron against Decepticon tyranny, namely the Elite Skystrikers. Almost two years later, Megatron returned to Earth and defected to the Autobots, as the Decepticons had fallen under Starscream's command.