The Dinobots. Oldschool cool. It was a little disappointing that Sludge (Brontosaurus, yes I know they've been discredited as a real dinosaur) was not in the new movie, but it was awesome to see Grimlock, Strafe, Slug, and Spike.
The Definitive Ranking Of The Best TRANSFORMERS Robots
Megatron: *sigh* why do I have a feeling that the bot in the left corner is Starscream?<<AND I JUST REALIZED. IT IS. THAT IS STARSCREAM (he's got the strange tall vent things on either side of his head, and despite the light, I'm pretty sure the bot's hands are blue...)