The Big O (1999–2003)

TV Series  |  TV-PG  |   |  Animation, Adventure, Sci-Fi
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Ratings: 7.6/10 from 1,449 users  
Reviews: 13 user | 12 critic

A futuristic city with lost memories, an expert negotiator fights threats to the city with the help of an android and his own giant robot.


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2003   2000   1999  



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Series cast summary:
Mitsuru Miyamoto ...
 Roger Smith (26 episodes, 1999-2003)
 Roger Smith (26 episodes, 1999-2003)
Akiko Yajima ...
 R. Dorothy Wayneright / ... (25 episodes, 1999-2003)
Motomu Kiyokawa ...
 Norman Burg (25 episodes, 1999-2003)
Tesshô Genda ...
 Dan Dastun (25 episodes, 1999-2003)
Lia Sargent ...
 R. Dorothy Wayneright / ... (25 episodes, 1999-2003)
Peter Lurie ...
 Dan Dastun (25 episodes, 1999-2003)
Emi Shinohara ...
 Angel (19 episodes, 1999-2003)
Wendee Lee ...
 Angel / ... (19 episodes, 1999-2003)
Unshô Ishizuka ...
 Alex Rosewater (16 episodes, 1999-2003)
 Alex Rosewater (16 episodes, 1999-2003)
 Norman Burg (13 episodes, 2003)
Ezra Weisz ...
 Additional Voices / ... (13 episodes, 1999-2003)
Milton James ...
 Norman Burg (12 episodes, 1999-2000)
Jamieson Price ...
 Big Ear / ... (12 episodes, 1999-2003)
Shinpachi Tsuji ...
 Big Ear (11 episodes, 1999-2003)


Roger Smith acts as a negotiator in a city where everyone has lost their memories and keep it that way. When he isn't helping hostage situations, he's saving the day in a giant robot known as Big O. Although Roger has no idea why the "megadeus" (Big O) responds to his commands or why his butler seems to be a master at fixing the high tech machine, he starts to question the forgotten past after the events started by an unsual case involving an android called R Dorothy. While he and Dorothy begin a Henry Higgins/Eliza Dolittle style of friendship, villains and mysterious characters enter with clues leading up to something that may bring out an emotion Roger has tried to fight all of his known life - fear. Written by Max Vaughn

Plot Summary | Add Synopsis


Cast In The Name Of God, Ye Not Guilty See more »


TV-PG | See all certifications »

Parents Guide:






Release Date:

2 April 2001 (USA)  »

Also Known As:

Big O  »

Company Credits

Show detailed on  »

Technical Specs


(26 episodes)


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Did You Know?


When Roger is walking around the streets of the "real" New York. The camera changes onto the top of a building, where one can clearly see several of the Gargoyles from the Disney series "Gargoyles". See more »


Alan Gabriel: Destroying pretty dolls is always entertaining. But it'll be so difficult to match the pleasure I'll get, from destroying a work of art like you!
See more »

Crazy Credits

During the closing credits at the end of the first episode, Roger is shown sitting alone on a large hourglass. After R. Dorothy joins his household, subsequent episodes show them sitting together. See more »


Referenced in Super Robot Wars D (2003) See more »


Opening theme (first season)
Performed by Rui Nagai
Lyrics, music and arrangement by Rui Nagai
See more »

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User Reviews

Anime for beginners or veterans
22 June 2005 | by (Columbus, OH) – See all my reviews

The Big O. An anime series that has appeal to those that don't like anime. But don't be fooled! The series can be appreciated by anyone that has half a brain. I will give you three reasons to see The Big O for yourself: #1: The characters. Each one unique, and they all interact with each other very well. The voice actors for the English version are superb. It is hard to believe that the series was originally in Japanese.

#2. The depth. The series is as deep as any I have seen which makes it good for second and third viewings. There are subtle nuances that really set this series apart. The depth you will find in The Big O is impressive, but it is a show that you can enjoy completely on the surface as well.

#3. The music. The soundtrack for this series is simply breathtaking. Of course there are some tracks that are a little silly, but they fit the scenes well. The main tracks are ones that will rope you into the series even if you don't like the story. Finding music of this quality is not common at all.

The only thing I regret about this series is that more people haven't seen it. I would love it if this series was one that all people at least tried out. Then maybe the producers would make additional acts for our viewing pleasure. The story is left open for additional seasons to be added, let's hope that they do.

6 of 7 people found this review helpful.  Was this review helpful to you?

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Who would you cast in a live action version of this? zdunne
Cast in the name of God - Thy not Guilty dave_gene_pico
Anybody notice this Daisuke_Jigen
Live action Big O? space_hog
Big O? zachlargo
A mind-poking question...Any suggestions? Jay_Prescott_Sherman
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