war dawn finds the airielbots going back in time and they run in to a young optimus prime...otherwise known as orion pax. the autobots at the time were admiring the decepitcons because they could fly. something the autobots could not do. megs manipulated orion pax, a battle ensued and pax found himself getting PWNED by megs. the airielbots took pax to another autobot named "alpha trion" who rebuilt orion pax into "optimus prime" and also passed to him the autobot matrix of leadership.
it's an episode worth watching.
