Speculate no more, Transformers fans. USA Today and Yahoo Movies! have the official list of Decepticons and Autobots that will be appearing in Transformers: Revenge of the Fallen, along with a few new photos. (Sadly, the photos are of iffy quality; they're practically screencaps.) Still a mystery is whether or not Megatron will appear -- and how he'll fit into the chaos.

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First up, the Autobots, starting with the obvious:

Optimus Prime, whose alternate form is a Peterbilt truck.

Ironhide
the weapons specialist, who transforms into a GMC Topkick.

Ratchet the medic, and a Hummer H2.

Bumblebee
, who will now be a 2010 Chevorlet Camaro. (This is the only Transformer I ever owned, by the way)

Arcee, the female Autobot, who will be Megan Fox's pink motorcycle. She was actualy supposed to be in the first movie, but Alex Kurtzman and Roberto Orci felt "we needed to win the audience over before asking for that suspension of disbelief: a feminine alien robot."

Jolt, originally a Decepticon, but in this he's a good guy. He'll be switching into a Chevrolet Volt plug-in hybrid.

Jetfire, an older Decepticon who switches sides, and transforms into a SR71 Blackbird jet. According to Michael Bay: "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. He knows the plan of the bad guys, but he forgets all the good parts of the plan."

Skid and Mudflap
, a.k.a. "The Twins" a.k.a. Chevrolet Beat and Trax concept cars."Some of the junior Transformers are just dumb. 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," says Bay.

Sideswipe, who was a bright red Lamborghini in the original will now be a GM silver Corvette Stingray concept car.

Go below the jump for the Decepticons


The Decepticons Cast:

Starscream, Megatron's one-time second in command. He's a F-22 Raptor jet, and can be seen in the gallery below.

Scorponok, the memorable mechanical scorpion

Sideways, who is the Audi R8 crashing through a building in the trailer

Ravage, the mechanical jaguar. He's the one Orci and Kurtzman seem to be the most excited about. "In the spirit of 'more than meets the eye,' Ravage isn't just lethal because of his sharp teeth," says 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'll still be the ultimate spy connected to Soundwave.

Soundwave, who was originally a cassette player in the toys, he will now be an orbiting space satellite. "They are still connected," Orci says of Soundwave and his pet. "But rather than trying to hold onto a notion as antiquated as an audiotape, which some members of our audience have maybe never laid eyes on, we wanted to go a new way."
There's photos of him in the gallery.

The Doctor, a spiderlike droid who can turn into instruments of torture. He'll be set loose on Shia LeBeouf's Sam so consider it revenge for Mutt!

Wheelie, a small radio-controlled truck.

Demolisher, one of the Constructicons that transform into construction vehicles.

Devestator, a giant robot formed by all the Constructicons (Scavenger, Scrapper, Hightower, Longhaul, Rampage, Overload and Mixmaster) joining together."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." According to Bay, Steven Spielberg saw it and said "This is f------ awesome!"

Last but not least is the title character of The Fallen. He's an ancient robot, the Transformers' version of Lucifer, whose arrogance caused him to be banished. He's the key to life on Earth and Cybertron.

So, what do you think? Are they truly bigger and badder than the original? A disappointment? A blast of nostalgia? Or will you hold off judgement until some other stills appear?