Megatron
[Megatron has just shot Sentinel in the back]
Now, we need a truce. All I want is to be back in charge. Besides... who would you be without me, Prime?
Optimus
Time to find out. [Tears off Megatron's head, then turns to Sentinel]
Sentinel Prime
Optimus... All I've ever wanted... was the survival of our race. You must see why I had to betray you. [Optimus picks up Megatron's gun]
Optimus
You didn't betray me. [**** the gun and points it at Sentinel] You betrayed yourself.
Sentinel Prime
[realizing what's about to happen]
NO, OPTIMUS! [Optimus shoots Sentinel in the back, flipping him over then shoots him in the head, killing Sentinel. Optimus drops the gun in disgust]
