Runabout (aka Over-Run[1]) is not the brains of the Battlechargers (they're both pretty much dim-bulbs), but he is much calmer and certainly more articulate[2] than Runamuck, and his presence helps keep the latter's cross-wired mind on task. That said, Runabout usually joins in with whatever mad ideas Runamuck comes up with, just to keep from being bored. Runabout is very susceptible to boredom.