Decepticons are the arch-enemies of the Autobots. As their name implies, they use deception and villainy to advance their own cause.
Both Decepticons and Autobots are from the planet Cybertron. As the epic battle between the Decepticons and the Autobots grew beyond Cybertron, they eventually made their way to Earth where they continued their battle.
The Decepticons are lead by Megatron and like Optimus Prime and the rest of the Autobots, are able to transform between humanoid form and mechanical devices, such as airplanes tanks and other objects. Decepticons are led, at times,