Mirage is one of the most unenthusiastic Autobots - he's unsure of the Autobot cause, and can't be fully trusted. But despite his doubts, Mirage is a very valuable soldier - he carries out various functions, from bodyguard duty to espionage, all of them with excellent results. Mirage is the fastest of the Spy Changers, and an excellent marksman. He is armed with a laser sniper rifle.

(From Wikipedia)