The only airborne Turbomaster, Rotorstorm is a major asset to the team... and he wants you to know it. He'll tell you he's a ruthless, powerful, and fearless fighter, and that he's respected even by Decepticons for his brilliant strategies and blinding speed. While making quick-witted quips about your progenitor to assure that he's the center of attention, he'll tell you that any moment now the Wreckers will be knocking on his door. That he's everyone's favorite Autobot.
He'll remind you he also possesses advanced technology that lets him eavesdrop on Decepticon communications and an extra "Dodge" sense (rather like that human with the magic outfit) that warns him of impending danger, letting him guide his ground-based comrades out of harm's way. He'll tell you he's a force to be reckoned with.
And it's all true.
But this impervious and attention-seeking persona is a mask for Rotorstorm, one he puts on to inspire and motivate his team. If he has any weaknesses, it's that he feels burdened by the legend of himself he's created. Most mechs don't know the real Rotorstorm behind the mask, but if you ask him about the Simanzi Massacre, you'll find him. His jokes will stop, and he'll stare at the floor.