Flashover is generally considered a nice, if rough around the edges, mech, usually in a good mood and willing to help with even the most menial tasks. Most of the time he's up for whatever ridiculousness anyone wants to pull, so long as it doesn't hurt anyone. But when he's working, his attitude is totally no-nonsense, a result of how many people's lives and homes rely on him doing his job correctly. He was involved in the creation of the Protectobots, though to what extent isn't really clear, and currently serves as Groove's guardian.