Autobot

The Autobots are a fictional faction of sentient robots in the Transformers multimedia franchise. The Autobots are living robots from the planet Cybertron who, like most Transformers, are each imbued with a unique "life force" known as a "spark." Led by Optimus Prime in most stories, the Autobots believe that "freedom is the right of all sentient life" and are often engaged in a civil war with the Decepticons, a faction of Transformers dedicated to military conquest and usually headed by Megatron. In a mirror universe portrayed in Transformers: Shattered Glass, the Autobots are villains opposed by the heroic Decepticons.

The transformation cog ("T-cog") and the living metal of each transformer's body allows them to change from their natural robotic body into an "alternate mode" based on some form of technology or life that they have scanned. When they were first introduced, most Autobots transformed into cars, trucks and other road vehicles. Over time, Autobots have been introduced with alternate modes that include aircraft, weapons, robotic animals, or a variety of devices (such as music equipment or microscopes). In most Transformers media, the Autobots originally transform into alien-style vehicles and technology native to their home planet Cybertron, but they later adopt alternate forms based on human technology after journeying to Earth.