W00t! Paramount Pictures released the robots and their names for Transformers 2!

AUTOBOTS

Optimus Prime: The Autobots’ leader – alternate form: Peterbilt truck.
Ironhide: Weapons specialist – GMC Topkick.
Ratchet: Medic – Hummer H2.
Bumblebee: Friend and mode of transportation for Sam Witwicky – 2010 Chevorlet Camaro.
Arcee: A female Autobot – Megan Fox’s hot-pink motorcycle.
Jetfire: A fighter plane crash-landed on Earth a long time ago, and he will become a reformed Decepticon now fighting for the humans. His alternate form is the SR-71 Blackbird, a sleek Cold War spy plane. “He’s old, craggy, forgetful … doesn’t work very well. Can’t transform very well, because he’s very geriatric. They get stuck with him a lot,” Bay says. “He knows the plan of the bad guys, but he forgets all the good parts of the plan.”
Sideswipe: A candy-apple red Lamborghini in the original, joins the cast this time as General Motor’s silver Corvette Stingray concept car.
Jolt: the original toy was a Decepticon, but in the movie he’s a good guy – Chevrolet Volt plug-in hybrid.
Skid & Mudflap: a.k.a. “The Twins” – Chevrolet Beat and Trax concept cars. “Some of the junior Transformers are just dumb,” Bay says with a laugh. “But it’s great for kids because they’re like the Little Engine That Could. They’re (screw)-ups, but they get really heroic at the end.”

Decepticons

Starscream: Formerly Megatron’s second in command, he escaped at the end of the first movie; F-22 Raptor jet.
Scorponok: The mechanical scorpion that attacked the American troops in the desert.
The Fallen: An ancient robot, sort of the Transformers’ version of Lucifer. He’s one of the original robot aliens, and his defiance and arrogance led to his banishment into another dimension. The screenwriters call him “the most elemental bad guy” and say that The Fallen holds the key to life on both Earth and Cybertron, the Transformers’ home planet.

Sideways: The Audi R8 seen crashing through a building in the trailer.
Soundwave: A cassette player in the original toys. An evil communications expert but this time in the form of an orbiting space satellite.
Ravage: The ultimate spy. A four-legged, cat-like robot. Ravage doesn’t turn into anything. “In the spirit of ‘more than meets the eye,’ Ravage isn’t just lethal because of his sharp teeth,” says screenwriter Alex Kurtzman. “There’s actually another skill set Ravage has that didn’t exist before, so there’s going to be a surprise for fans.” He doesn’t talk like the other Transformers.

The Doctor: A spider-like droid that transforms into various implements of torture.
Wheelie: A small, radio-controlled truck.
Demolisher: One of the Constructicons that transform into construction vehicles.
Devastator: A giant robot formed by the Constructicons joining together; individually, they are: Scavenger, Scrapper, Hightower, Longhaul, Rampage, Overload and Mixmaster. “He’s made of vehicles designed to build, and he turns into is someone who loves to destroy,” Orci says. “He is an agent of absolute chaos.” Michael Bay says that when Steven Spielberg saw Devastator, he said “This is (expletive) awesome!’ ” Bay says,  “It’s always nice when you can make him swear.”
Megatron: (unannounced)