So this character's coming out in the film, yes?

Quote Originally Posted by griffin View Post
I guess Optimus Prime wasn't the last prime after all... If it is a pre-existing character, The Fallen should have known about it, or at least sensed it if he could sense the death of Optimus in TF2.
Quote Originally Posted by fatbot View Post
Wasn't it stated in the films that Megs & Optimus are brothers and that Optimus was descended from the original Primes? Wouldn't that make Megatron a Prime as well?

*EDIT*
found the quote about them being brothers

Optimus Prime: [to a dying Megatron] You left me no choice, brother.
Quote Originally Posted by griffin View Post
There was so much debate over that at the time by the fans as to the context, but if I recall, the writers mentioned at botcon, that it was meant to be like 'brothers in arms'... but since it was never specifically stated in the movie, I always thought that Megatron is theoretically a Prime if lineage earns the title. It would explain why The Fallen kept him close or converted him if only a Prime could kill him... but shoulda just killed the 'threat' and be done with it. Maybe he thought the irony of having a Prime worship him and do his bidding was just too delicious to pass up.
Unless Megatron is descended from Megatronus Prime, which was The Fallen's original name until, ya know, he became The Fallen and everyone forgot what he used to be called. In which case The Fallen is mentoring his direct descendant.

I personally prefer to believe that they were brothers-in-arms.

But yeah, if Sentinel Prime exists, then clearly Optimus wasn't the last of the Primes. Unless Sentinel Prime was:
+ Created from Optimus Prime's Spark, like Lio Junior.
+ From another dimension or the future and arrived after the demise of The Fallen.
+ Is Drift.