Flamewar is a Decepticon serving Megatron on Earth. She stalks its populace on his orders, though she's really stalking the Autobot Arcee. Having studied her moves for many years, Flamewar is hoping to draw the Autobot into a trap, and thus, her end.
Obsessive one, that Flamewar.
Her alt-mode is a Flame-tattooed Motorcycle.