Free Transformers wallpapers. Transformers is a 2007 live action film based on the Transformers franchise, directed by Michael Bay and executive produced by Steven Spielberg. It stars Shia LaBeouf as Sam Witwicky, who has the map to the Allspark, the center of the war between the heroic Autobots and the evil Decepticons. The film also stars Megan Fox, Josh Duhamel, Tyrese Gibson, Jon Voight, John Turturro, and Hugo Weaving as the voice of Megatron. Peter Cullen, the voice of Optimus Prime in the 1980s cartoon, reprises the role for the film.