Mei has long dark purple hair and indigo eyes. In her Herrscher Form, her eyes gain hot pink pupils, dark red horns fading to bright red on her head, and her hair becoming a lot longer and parts in the middle into two. Mei is someone with a long history of neglecting her own feelings. Even before her father was arrested, she was used to silently accepting her loneliness within the home. When she went from being the center of attention at school to a "criminal."