Math teacher, scary, tall, pale, wears a black shirt, She works with a group of teachers, who kill students who fail their tests, on one of her arms is a Compass (like for drawing circles), with a sharp point that she uses to kill those who fail, break rules or wrong her somehow. She really cares about her favorite, and would do anything to protect them, or make them happy, she would never hurt them or let anyone hurt them, even if they failed a test, she really likes to watch everything they do