Jetfire was once a autobot weapon expert but later he was experimented on by shockwave however never agreed with their cause. later he returned to the Autobot faction evantally . He was an pridefull autbot but the fallen broke him and he sent to die resided in a muesum in Washington, D.C. Sam Witwicky finds him in order to get Jetfire to create a Space Bridge to Egypt to find The Harvestor before the Decepticons.
Jetfire is mortally wounded by the Decepticon Scorponok in Egypt and sacrifices himself by ripping out his spark, to aid Optimus Prime in defeating The Fallen. Jolt combined the exoskeleton of Jetfire and combined with Optimus Prime so he can kill the Fallen and defeat Megatron.