Well, since Megatron owned Optimus in Movie 1, and Prime owned Megatron in Movie 2, I think Optimus stole Megatron's steroids or something to that effect.
Yeah, but I wonder how they would fit in Galvatron in this continuity? How would they change Megs to fit that?
they better just repair him-have the Doctor do it-or maybe even Shockwave-just keep him the same. those who were kept the same typically got more movie-accurate toys. Leader Prime, Starscream, HABB-all in the first movie. look at their toys. its amazing. now look at the accuracy of Megatron, Scalpel, Jetfire-all not so accurate (though i dont have Jetfire, so dont quote me on that). they know what they need to look like, and how they will look in the movie, so its easier to make their toys accurate. characters who undergo changes between the toy is started and the movie is released-they get less accurate toys. thats why Long Haul, who wasnt in the first movie, is getting an accurate toy (minus leg thickness&length and wheels)-they knew what he would look like. so he better not change.