Miss Circle is a cruel and violent teacher with long, spiky black hair, black horns, and a retractable compass weapon attached to her right arm. She has sharp black fingers on her left hand and is known for mercilessly killing students who fail her class. Despite her deadly nature, she occasionally shows a playful side, but it often masks her murderous tendencies. She’s highly skilled in combat, precise in her attacks, and feared for her psychological manipulation and brutality.