The stalwart and courageous leader of the Autobots.  Never wavering between right and wrong, Optimus Prime is always willing take any sort of responsibility in battle, and is always willing to fight for the protection of his fellow autobot, as well as the lives of many innocence.  His actions throughout the fight against the Decepticon has made him a respected leader figure in the eyes of many of his comrades.  Try to sound as close to Peter Cullen as you possibly can.