Barricade

Barricade is a Decepticon scout. He is a complicated robot, and is Starscream's most trusted ally, seeing him as vital to getting the All Spark and Megatron. Barricade can transform into a Saleen Mustang S281E police car.

Biography
After being active on Earth for sometime, Barricade was first seen pick up his partner Frenzy at the airport after his attempt to hack into the United States military network on Air Force One failed. They discovered Project Iceman, Samuel "Sam" Witwicky's grandfather who had found Megatron and he had marked the glasses with the location of the All Spark. Barricade headed out to find Sam.

Barricade confronted Sam in his police car form, making him think he was a police officer. Sam was fleeing Bumblebee, thinking he was out to harm him. Sam asked for Barricade's help. Angered, Barricade pushed Sam down several times by driving towards him and ramming him. Suddenly, Barricade transformed before his eyes and yelled at him for the location of eBay item 21153, which means his grandfather's glasses. Suddenly, Bumblebee arrived and knocked Barricade over. Then, convinced Sam to trust him and they escaped Barricade. Barricade chased them and tackled Bumblebee, but was heavily damaged during the battle.

Later on, Barricade recovered and joined Bonecrusher and Brawl to chase the Autobots. Barricade activated his siren to clear some room while Bonecrusher simply knocked every car out of his way. Sam recognized Barricade. However, Barricade didn't attack and stopped chasing them, realizing he was outnumbered. Bonecrusher, on the other hand, charged into battle and attacked the Autobot leader Optimus Prime, but was killed quickly.