Mar is the manager of Crocell Kerori who manages her demon idol status as Kuromu. Mar has navy blue hair and yellow eyes. she wears the female manager uniform. Mar has a younger brother that is a teacher from Babylus Demon School. Her hairs are navy blue. She has yellow eyes and wears glasses. Her first appearance is in the episode 21 of the anime. Besides her manager job, she seems to really care about Crocell Kerori.