A red haired little Devil wearing a black dress and a white undershirt with black bat wings in her head and in her back. Koakuma doesn’t have a name nameless little Devil is her title. Her names means "Nameless little Devil". Koakuma is a crybaby,naive,not very strong,a bit dumb,easily fascinated. She helps lady Patchouli at the Scarlet Devil mansion,due to her bad health. She does not have a power. Her job is also to tidy up the books of the library. She summons little Devil to shoot bullets.