Sentinel Prime. You forgot other Traitors as well....

The Fallen (betrayed his brothers)
Megatron (betrayed Sentinel after Sentinel betrayed him)
Brains (unknown if he was a Decepticon before he started chillin' with Wheelie)
The Constructicon used to repair Megatron in ROTF. (Scalpel: Need parts! Kill ze little one!)

 

Sentinel betrayed the autobots if they would change the film he would not Kill Ironhide.

 

I wish they kept him alive so he'd pretty much would be tried for war crimes.

 

Sentinel Prime

 

Wheelie he did because of Jetfire. Also that Sentinel wants to enslaved humans so they can rebuilt Cybertron,and Dyan is just a Idiot who thinks The Decepticons are winners but in true they always lose.

 

Sentinel Prime
(then Wheelie, )

Sentinel Prime....it was obvious from the film.

Dylan never worked with/for the Autobots. He went from regular human side character to reveal he was an undercover Decepticon human minion. Plus based on his backstory, he was already a Decepticon since he was born (more or less).

Wheelie also wasn't a true traitor, he was "born" at the begining of the movie along with the Kitchen-cons, not sure how he got instructions from The Fallen to get the Allspark shard. Plus he willy-nilly changed sides, so I don't consider him a traitor.

 

You forgot to put Brains in the list.

 

Don't forget Jetfire, he changed sides to the Autobots aswell as Wheelie

 

Jetfire and Sentinel.

 

No, Wheelie was not born down there. If he was, he wouldn't have known who Soundwave was or that he was supposed to contact him. He wouldn't have known of The All Spark Shard or that The Fallen was even involved.

 

Sentinel is easily one of the best done characters in the movies, if not the best.

 

Of course, Sentinel Prime. Dont want to say even " Prime "...