Transformers is an entertainment franchise spanning toys, comic books, animation, video games and films. It began with the Hasbro toy line capitalizing on a gimmick of "two toys in one" whereby a toy robot could also be "transformed" into a vehicle of some sort. It also came with a catchy motto "Robots in Disguise" and an equally creative storyline centering on two factions of warring alien robots which are called the Autobots and the Decepticons. Michael Bay has helmed all Transformers movies so far, and is rumored to be doing a fourth.