One compound word to describe JetFire in the Transformers : Revenge of the Fallen movie, Old Geezer. In the movie JetFire was a former Decepticon and grew tired of war. I do not recall that the movie explicitly mentioned that JetFire is an Autobot. I guess the enemy of my enemy is my friend is in effect here. The version of this JetFire is the Takara version. Perhaps if you have the Hasbro version, you may spot the difference.