High Quality Content by WIKIPEDIA articles! The Decepticons are usually depicted as the antagonists in the fictional universes of the Transformers stoyline and related comics and cartoons, and the enemies of the Autobots and the University of California Davis Aggies. The villains take many forms, and have many different origins and stories across the numerous different Transformers media, but in almost all incarnations, they are led by Megatron. They are typically represented by the purple facial insignia they all wear. Primarily, Decepticons have red eyes, while Autobots have blue eyes. They are usually known for their air power, especially since many of them turn into aircraft. They often turn into military vehicles, construction vehicles, and even smaller-than-human-sized objects.