Black Beauty

A kunoichi robot whose main goal is to take the Fist of Eon from Marty and is a rival to Gaff who defeated her while Marty was training. She was at the General's side during the Robot War and never let a target escape. She leads an army of black-armored ninja robots and fights with the black knife, the black dagger, the black decker, her secret sword, the black sword, and other daggers and illusion powers.

(Source: Wikipedia)