EDIT: I was messing around and I saw that a thread was already started for this topic. Sorry to anybody who is confused. I have been thinking; with Megatron and The Fallen being on the same side it probbly won't be all honky-dory between the two, for example: they both are power hungry feinds. I think Megatron will try to win The Fallens friendship and try to use him for his bidding against the Autobots once and for all, but The Fallen will learn that he is being used and on top of that he is fed-up with Megatrons orders. The Fallen want's to get Megatron's whiny mouth out of the way, so he team up with the Autobots. Now, I'm not saying The Fallen converts to an Autobot, but what I am saying is that the only way to get rid of Megatron is to join up with the enemy of his enemy, the Autobots. So, in helping the Autobots he takes on an Earth mode, the SR-71 Blackbird, to blend in - thus becoming Jetfire. In order to defeat the Decepticons, including Devastator, he forms with Optimus Prime. Even though he works with good, he's doing it with his own motives in the end. Well, thats my theory. I would love to hear what the TFW2005 community has to think; whether it's an addon to my theory or a completely different one!