Before the Great War between the Autobots and Decepticons broke out, Jetfire was a partner and friend to Starscrem. The two were as close as brothers; the one as calm, rational and slow to anger as the other was jealous, erratic and arrogant. When Starscrem joined the Decepticons in attacking the Autobot held cities of Cybertron, Jetfire was slow to choose sides. He was hesitant to join in the slaughter of the largely defenseless Autobots, but did not want to take up arms against someone he'd considered a friend.