Benikage

Benikage (previously called “Bloody Shadow” )

Babyface Alter Ego: Yasha aka "Judgement"

A mysterious woman with no name or past... Benikage (aka "Bloody Shadow") is an agent of the "Otugumi", a modern day Ninja Unit that trained her in the arts of Ninjitsu.
She was sent by the Japanese Government to investigate the activities of the Rumble Roses Organization (while posing as a competitor in the Rose Tournament). Her ultimate goal is to uncover what is really going on behind the scenes...
As she learns more about what is going on, she finds that Anesthesia is at the heart of the all the turmoil being caused around her. She repeatedly crosses paths with the Nurse, and at each encounter grows increasingly outraged by her inhumane and unethical work. Once she becomes aware of the extent of Anesthesia's machinations (such as experimenting on Fujiko Hinomoto to turn her into Evil Rose), Benikage concludes that she is totally evil!
She goes so far as to declare that Anesthesia is The Devil and dedicates herself to defeating her and ending her plans once and for all...