Studio Deen Co. Ltd. (Japanese: 株式会社スタジオディーン | Hepburn: Kabushiki gaisha Sutajio Dīn | sometimes stylized as "Studio DEEN") is a Japanese animation studio founded in 1975 by Sunrise producer Hiroshi Hasegawa and ex-Sunrise animators. The studio owns three subsidiaries: Danny Donghua (Japanese: 丹尼動画), a Chinese sub-contracting studio; Megumi (Japanese: め組), a digital work sub-contracting studio; and Umidori (Japanese: うみどり), a 3DCG sub-contracting studio. The "Deen" in the company's name is taken from Brave Raideen, an anime by Sunrise that the studio's founders did finishing animation work on.