Years of war against his old friend/rival, Megatron, have brought Optimus and his team to Earth. Over the centuries, loss and war have led Optimus to appear stern and serious to most. But scratch the surface, and you'll find an individual who greatly cares for his fellow living beings, with a warmth and kindness his closest friends can rely on. You'll also find regret over the loss of a comrade to darkness, and the faintest glimmer of hope that he can be saved.