She is the second-in-command of the Black Knights and seems close to Avaritia. Her true identity is Misao Kusakabe, one of the strongest members of the Kusakabe clan Misuzu belongs to. She became an unofficial member of Georgius' Punishment Squad and helped them fight Liselotte, but ultimately, she was the only survivor. As a last resource, she used her magic to revive all the members of the squad by binding their souls to the area's dark energy, with the effect of turning them into humanoid monsters. [Edited from the 11eyes wiki]