Jetfire is ancient and powerful, but he would prefer to stay hidden in the background rather than on the frontlines. He is a peaceful robot at heart, preferring the stately, ordered excitement of science to the frenzy of battle. But the reckless ambition of the Decepticons and the senseless violence of their war sickened him, so he left Cybertron to go into hiding. He slumbered in peace for years. Reawakened by the arrival of the war on Earth, he decided once again to enter the fight - this time on the side of the Autobots, and this time to end it for good, whatever the cost.