The Big O

THE ビッグオー (Za Biggu Ō)
The Big O
Cover art for The Big O Complete Collection DVD release by Bandai Entertainment
Genre	Mecha, neo-noir, tech-noir
Anime television series
Directed by	Kazuyoshi Katayama
Written by	Chiaki J. Konaka Kazuyoshi Katayama
Music by	Toshihiko Sahashi
Studio	Sunrise
Licensed by	^AUS Madman Entertainment ^NA Sentai Filmworks ^UK Beez Entertainment
Original network	WOWOW
English network	^UK Toonami ^US Cartoon Network (Toonami), Adult Swim
Original run	13 October 1999 – 19 January 2000
Episodes	13 (List of episodes)
Anime television series
The Big O II
Directed by	Kazuyoshi Katayama
Written by	Chiaki Konaka
Studio	Sunrise
Licensed by	^AUS Madman Entertainment ^NA Sentai Filmworks
Original network	WOWOW
English network	^US Adult Swim (Toonami)
Original run	2 January 2003 – 23 March 2003
Episodes	13 (List of episodes)
Manga
Written by	Hitoshi Ariga
Published by	Kodansha
English publisher	^NA Viz Media
Demographic	Seinen
Magazine	Magazine Z
Original run	July 1999 – October 2001
Volumes	6 (List of volumes)
Manga
The Big O: Lost Memory
Written by	Hitoshi Ariga
Published by	Kodansha
Demographic	Seinen
Magazine	Magazine Z
Original run	November 2002 – September 2003
Volumes	2 (List of volumes)

The Big O (Japanese: THE ビッグオー, Hepburn: Za Biggu Ō^?) is a Japanese anime television series created by designer Keiichi Sato and director Kazuyoshi Katayama for Sunrise. The writing staff was assembled by the series' head writer, Chiaki J. Konaka, who is known for his work on Serial Experiments Lain and Hellsing.

The story takes place forty years after a mysterious occurrence causes the residents of Paradigm City to lose their memories. The series follows Roger Smith, Paradigm City's top Negotiator. He provides this "much needed service" with the help of a robot named R. Dorothy Wayneright and his butler Norman Burg. When the need arises, Roger calls upon Big O, a giant relic from the city's past.

The television series is designed as a tribute to Japanese and Western shows from the 1960s and 1970s. The series is done in the style of film noir and combines the feel of a detective show with the mecha genre of anime. The setpieces are reminiscent of tokusatsu productions of the 1950s and 1960s, particularly Toho's kaiju movies, and the score is an eclectic mix of styles and musical homages.

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Wikipedia