Koakuma

Koakuma (lit. "Little Devil") is the name given to the unnamed devil that appears in Touhou 06: Embodiment of Scarlet Devil as the midboss for Stage 4. As she lives in the library of the Scarlet Devil Mansion, she is commonly assumed to be Patchouli's assistant or, possibly, her familiar. Whilst the name Koakuma was given to her by fans, Jun'ya Ota, the designer and head programmer of Team Shanghai Alice, creators of the Touhou Project, has used the term to describe her, when answering fan questions on the now-defunct Gensou Bulletin Board. Koakuma is commonly depicted in a black dress with white sleeves, with red hair and two pairs of bat-like wings, one smaller than the other. The larger pair are on her back, whilst the smaller pair grow from her head.