After four decades, Optimus Prime is finally getting an essential upgrade.

Add Yahoo as a preferred source to see more of our stories on Google. Chris Hemsworth may not have been every Transformers fan's first choice for Optimus Prime, but there was one important reason ...

In almost all versions of the Transformers franchise, Optimus Prime is the wise, sage leader of the Autobots. That wasn't quite the case in one continuity, and this divergent take on the character is ...