She is the main antagonist of the Bomb Girl arc. By pulling a pin on her choker, like a grenade, Reze can explode and transform into a hybrid form. She can also perform the same technique, but instead of just transforming, she explodes her head and leaves a decoy to distract her opponents. This decoy can hold its own head and throw it, then it explodes like a bomb and so does its entire body before Reze reveals himself.