'Transformers 4' has promised a complete reboot for the franchise including all new robots. One classic who will return despite the new direction is the Autobots leader Optimus Prime. But even Prime isn't exempt from the reboot. The main robot character will have a completely new look in the film and director Michael Bay has revealed that new look to the fans.

Last night Michael Bay revealed the new look at Optimus Prime in 'Transformers 4' on his official website with a message saying, "The completely upgraded, custom-built Optimus Prime from Western Star (a subsidiary of Daimler Trucks North America)."

We don't have a look yet at what Optimus will look like in robot-mode (and probably won't for a while yet) but yesterday we did get a look at two other car-version Transformers, allegedly new versions of Slingshot and Drift.

We've included the new look at Optimus below along with a look at the old design. It's definitely an upgrade but we're not sure this is a full-scale reboot of the character. At least we can hope that when he transforms into a robot, he won't have lips but that might be too much to ask.

'Transformers 4' - which stars Mark Wahlberg, Nicola Peltz, Kelsey Grammer and TJ Miller - hits theaters on June 27, 2014.

Transformers 4 Optimus Prime
Optimus Prime Transformers

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