[home] [anime] [best girls] [music] The Big-O Releases Season 1 The Big-O THEビッグオー THE Big O 1999-10-13 to 2000-01-19 13 episodes (24 minutes) Action, Mecha, Mystery, Psychological, Sci-Fi Sunrise Season 2 The Big O II THEビッグオー (2003) THE Big O (2003) 2003-01-02 to 2003-03-27 13 episodes (24 minutes) Action, Mecha, Mystery, Psychological, Sci-Fi Sunrise Sources Manga The Big O Theビッグオー Hitoshi Ariga - Story & Art Hajime Yatate - Original Creator 1999-07-01 to 2001-10-01 21 Chapters 6 Volumes