The Deimon Devil Bats (泥門デビルバッツ, Deimon Debiru Battsu?) is a fictional American football team, comprised of the protagonists of the anime and manga series Eyeshield 21. The team is from the fictional Deimon Private Senior High School (私立泥門高等学校, Shiritsu Deimon Kōtōgakkō?). At the beginning of the series, the club has only two members, Yoichi Hiruma and Ryokan Kurita, who are joined by Sena Kobayakawa, codename "Eyeshield 21". Over the course of the series, the Devil Bats acquire new members and gradually improve as they move toward their goal of playing in the Christmas Bowl, the high school American football championship of Japan.

Source: Wikipedia