Erika Vermillion

She is the head of the occult research lab, of which Tamami, as well as Kozue is technically a member. She is never called her name and is only referred to as "club president (ぶちょう, Buchō)" throughout the series. She has a masochistic slant as well, and painfully enjoys Tamami's talent for insults and other unusual tortures. She is notable for her blank expression and gloomy atmosphere that surrounds her.