Black Rock Shooter is a character created by Ryohei Fuke. Originally a drawing posted to Fuke's blog and on the image-sharing site Pixiv, it inspired Ryo of the band Supercell to create a song entitled Black Rock Shooter using Vocaloid software. The two later collaborated on the song's music video, for which Fuke provided illustrations.
Black Rock Shooter's popularity grew to the point that she has spawned an entire franchise, including several manga series, an OVA and anime TV series, and a PSP RPG entitled Black Rock Shooter. The song Black Rock Shooter was included in the track list of Sega's Vocaloid rhythm game Hatsune Miku: Project Diva F, though Black Rock Shooter herself does not appear in the game.