Bones (ボンズ, Bonzu) is a Japanese anime studio. It has produced numerous series, including RahXephon, Wolf's Rain, Scrapped Princess, Eureka Seven, Ouran High School Host Club, Darker than Black, Angelic Layer and Fullmetal Alchemist. Bones was founded by Sunrise staff members Masahiko Minami, Hiroshi Ōsaka and Toshihiro Kawamoto in October, 1998. One of their first projects was collaborating with Sunrise on Cowboy Bebop: Knockin' on Heaven's Door, a feature film based on the Cowboy Bebop TV anime series.
http://www.bones.co.jp/