I'm so very upset right now.
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I have no words. And WTF is that huge thing? And why does Ravage look like a reject from the Screamers movie? :O
So, according to Wikipedia's
Transformers 2 article:
Autobots
Optimus Prime
Bumblebee
Ironhide
Ratchet
Arcee (three motorcycles)
The Twins (Skids & ??)
Sideswipe (Chevrolet Corvette "Centennial Concept")
Jolt (Chevrolet Volt)
Jetfire (SR-71 Blackbird)
Wheelie (radio-controlled car)
Decepticons
Megatron (resurrected as a Cybertronian tank)
Starscream
Soundwave (Chevrolet Silverado?)
Ravage (?)
Barricade (Saleen S281 police car/Audi R8)
Alice (Pretender)
Constructicons
and also
The Fallen
but....SRSLY?!