Gunrunner

If there was ever an Autobot suffering from untreated post-traumatic stress syndrome, Gunrunner is it. Acting as a squadron leader during a major firefight with the Decepticons, Gunrunner mistakenly assured his comrades and subordinates that he'd get them all out alive. Instead, none survived except him, and he only made it out due to his Pretender armor. Because of this, Gunrunner is a seriously changed bot—he experiences tremendous stress and insecurity if forced into combat outside of the safety of his shell, and refuses any long-term command position for fear of losing another group of close friends on the battlefield. Instead, he keeps squadrons assigned under him at arm's length, refusing to tell them "Everything'll be all right", because he can no longer be sure it will be.

Gunrunner has the unenviable alternate mode of a landing gear for his backpack, which itself turns into a fighter jet. Sucks to be him.

Team : Autobots