5. The Quintessons
Sunbrow ProductionsHere's one of the more likely prospects for TF5. Age of Extinction reveals that the creators of the Transformers sent Lockdown to Earth to reclaim Optimus Prime, and the movie ends with Prime heading into space to seek them out, their identity left ambiguous. These creators will almost certainly end up being the Quintessons, the tentacled alien race we mentioned in our easter eggs article, who created the Transformers, using the Autobots as slaves and the Decepticons as their muscle. If Bay wants to truly take the franchise in an exciting new direction, this is definitely the way to do it: moving away from the familiarity of humans running around a city while everything explodes around them can only be a good thing, especially if it results in Optimus facing off against his creators, perhaps in a war over Cybertron. Honestly, who wouldn't want to see the Autobots and Decepticons being forced to team up for the greater good, to take down their unruly overlords?