Transformers are robots from the planet Cybertron divided into two powerful groups namely Autobots led by Optimus Prime and the Decepticons led by Megatron. The story began during the Cybertronian Civil War. When all transformers search for the Allspark, a large cube of energy that grant eternal life to mechanical objects and where the source of of all Transformer's lives. And finding out that the cube landed on the planet, Earth. Later it was discovered by the U.S Government and the built a Dam making it as a research facility for it. Megatron later on found out that it was there on earth but as he went to earth, accidentally he crash-landed in Artic Ocean and was frozen. Years had passed and he was found and brought to the same facility where Allspark is located. Autobots were dispersed throughout the entire universe. Optimus Prime's group traveled to earth in search of the Allspark. However, Decepticons follows. Transformers can change in an instant from the body of common objects usually vehicles to physically grown robots.

There are many characters of Transformers and i apologize that i cant include them all because Transformers change quite several times since it was first aired decades ago.

Here are the lists of the Transformers The Movie(2007) directed by Michael Bay:

Autobots

Optimus Prime-

Peter Cullen voices Optimus Prime. Disguised as a Peterbilt truck. Leader of the Autobots, dedicated himself to stop the Decepticons wherever and whenever they attack.

Bumblebee -

Mark Ryan voices Bumble Bee. Disguised as a 1976 Chevrolet Camaro, and upgrades into the 2009 model.

Cliffjumper-

1982 Porsche 924. Impulsive. Optimus Prime usually gives him advice about precaution.

Ironhide-

Jess Harnell voices Ironhide, a modified GMC TopKick C6500 . Autobot weapon specialist.

Ratchet-

Robert Foxworth voices Ratchet. Medic of the Autobots. Transforms into Search and rescue Hummer H2.

Jazz-

Darius McCrary voices Jazz. Second in command of the Autobot forces. A modified Pontiac Solstice in disguise.

Arcee-

Female Transformer once a member of a squad lead by Bumblebee on Cybertron.

Prowl-

1979 Nissan 280ZX Police Car . He operated Optimus Prime's right-hand man in early episodes.

Decepticons

Megatron-

Hugo Weaving voices Megatron. Decepticon leader. Optimus calls Megatron his brother.

Starscream-

Charlie Adler voices Starscream, Megatron's second-in-command. A Lockheed Martin F-22 Raptor jet in disguised.

Frenzy-

Reno Wilson voices Frenzy. Decepticons spy who transforms into a boombox, and eventually into a mobile phone.

Barricade-

Jess Harnell voiced Barricade. Disguised as a Saleen Mustang police car.

Bonecrusher-

Jim Wood voices Bonecrusher, he attacks Optimus Prime along the highway to Mission City. Disguised as a Buffalo H Mine.]

Blackout-

Transforms into a MH-53J Pave Low III helicopter with his minion Scorponok.

Transformers became the highest grossing movie in the year 2007 all over the world. The film won number of awards and nominated several times for Academy Awards. Children and Adults were really into it and proven to be the "Must-Love Movie" of the year worldwide!