Air Raid

Criminals. They are a superstitious, cowardly lot, and Air Raid has zero tolerance for them. He believes that respect for the law is a defining characteristic of sentient beings, separating them from non-living drones, and is disgusted by the Decepticons' disregard for the laws of their own home planet.
Air Raid has dedicated his life to tracking down the worst of them, spending centuries pursuing them all throughout the galaxy, and he intends to keep this up until every single one has been brought to justice.