Ranked #1345

The Big O

Alternative Titles

English: The Big O
Synonyms: Big O Roger, Big O
Japanese: THEビッグオー


Type: TV
Episodes: 26
Status: Finished Airing
Aired: Oct 13, 1999 to Mar 27, 2003
Premiered: Fall 1999
Broadcast: Unknown
Producers: Bandai Visual
Studios: Sunrise
Source: Unknown
Duration: 24 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 7.571 (scored by 18,667 users)
Ranked: #13452
Popularity: #1107
Members: 39,727
Favorites: 503
1 indicates a weighted score. Please note that 'Not yet aired' titles are excluded.
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.


Paradigm City is a place without a past. 40 years ago, something happened that wiped the memories of everyone in it. Unfortunately, the people of Paradigm City were very busy before then, making Megadueses (giant robots) and monsters. People who were born after the memory wipe are gaining/recovering memories of the past and using them to build newer threats. With the help of The Big O (a faithful giant robot), his butler Norman and the android Dorothy, Roger Smith keeps Paradigm City safe. As problems mount and more memories surface, Roger's past and Paradigm's future begin to become suspect...


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Promotional Videos

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Related Anime

Characters & Voice Actors

Wayneright, R. Dorothy
Wayneright, R. Dorothy
Yajima, Akiko
Yajima, Akiko
Smith, Roger
Smith, Roger
Miyamoto, Mitsuru
Miyamoto, Mitsuru
Burg, Norman
Burg, Norman
Kiyokawa, Motomu
Kiyokawa, Motomu
Rosewater, Angel
Rosewater, Angel
Shinohara, Emi
Shinohara, Emi


Maseba, Yutaka
Maseba, Yutaka
Katayama, Kazuyoshi
Katayama, Kazuyoshi
Director, Episode Director, Script, Storyboard, Screenplay
Tsuruoka, Yota
Tsuruoka, Yota
Sound Director
Nakamura, Kenji
Nakamura, Kenji
Episode Director

More episodes Episodes(0/26)

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Opening Theme

#1: "Big-O!" by Rui Nagai (3-13)
#2: "Respect" by Sahashi (15-20, 22-25)

Ending Theme

"And Forever..." by Robbie Danzie with Naoki Takao

Write a review | More reviewsReviews

Nov 18, 2007
Yes, I understand I'm again writing a very excellent review from this one, I did dock it one for art because there were some slight animation issues in some parts of the show. But really I did enjoy this show.

First of all, if you are a mecha fan, you may be sorely dissapointed with this show, it has much more of a mystery feel to it and the Mecha fights may not be to your liking.

However, if your not a hard-core mecha fan like me but can appreciate the art-form of Mecha, you will likely enjoy this.

The main reason I love this show was because read more
I found this review Helpful
Feb 27, 2008
BIG O was a unique show, with a good concept. Having everyone in the worlds memories erased and no one knows what happened, but everyone has clued inside of their minds. It reminds me a little of the movie DARK CITY. It had a nice twist on the Giant Robot anime, instead focusing on the characters and story. The story was great, you couldn't stop watching. All the twists and turns along the way in search of the what happened forty years ago. The story and characters were the best part of the show. The music was great, the animation was pretty good, and the read more
I found this review Helpful
Oct 18, 2008
This is one of my most favorite animes, I'm not huge on mecha as most series ive seen seem to be about a buncha teens in the future trying to save the world (altho another exception to that is eureka seven, which oddly is a buncha teens in the future trying to save the world >_> but thats besides the point)

anyways, its basically about a negotiator named roger smith that pilots the big freaking mecha, big o. later on he gets swept up in all of this espionage and secrets and whatnot.

the first season is mostly stand alone episodes roger gets hired as a read more
I found this review Helpful
Jul 16, 2015
The Big O is a cult classic when it comes to anime not many people know about it. Unless you saw it on toonami on cartoonnetwork in the late 1990s and saw the saw second season of it on cartoonnetworks adult swim in the early 2000s.The show is unique in the sense that there is not many animes that look like it . And it does not have the facial expressions that indicate the characters emotions. Say for example if the character is blushing that means that there embrassed or have a flaming aura showing that they are very upset. None of the usual read more
I found this review Helpful


Anime: Neon Genesis Evangelion
If you like surreal shows about giant robots in a dreary, post-apocalyptic setting, ho boy, have I got the show for you. 
reportRecommended by Masterminded
Anime: Giant Robo the Animation: Chikyuu ga Seishi Suru Hi
The 90s Giant Robo was a major influence on The Big O, particularly an inspiration for the emphasis on the weight and size of the robots and for the latter show's retro-futuristic urban setting. (Kazuyoshi Katayama, The Big O's director, did storyboarding and animation direction work for some episodes of Giant Robo.) If you enjoy the action in one you're likely to enjoy the other. 
reportRecommended by Kolokotronis
Anime: Cowboy Bebop
It's futuristic in nature and has the same "overcast", melancholly tone to it. The characters are increadibly similar to eachother;

Spike Spiegel and Roger Smith (both voiced by Stephen Blum in English) are both cool and collected characters with beloved allies that annoy them to no end.

Faye Valentine and Angel (both voiced by Wendee Lee in English) are both selfish women looking to restore their lost memories and who become unwillingly in love with the main character.

Both fantastic. 
reportRecommended by Neite
Anime: Kishin Houkou Demonbane (TV)
Noir-Style Setting, mechas fighting and protagonist doing detective-y work. 
reportRecommended by ariapokoteng
Anime: Kaiketsu Jouki Tanteidan
Both series have mechs except that Big O is bigger. Both main characters have butlers and female assistants. Both have a noir atmosphere. 
reportRecommended by xxxholic_wing
Anime: Darker than Black: Kuro no Keiyakusha
Big O and Darker than Black draw influences from film noir (and, some may say, Batman). Both are set in a grim future brought about by a cataclysmic event that occurred years prior. The protagonists are well-known professionals in their line of work with shady pasts that may be connected to the aforementioned disaster. 
reportRecommended by Berkut

Recent News

Recent Forum Discussion

Poll: Big O Episode 2 Discussion
gohdan - Feb 24, 2011
12 replies by masowyzgon »»
Oct 31, 2015 5:59 PM
Poll: Big O Episode 14 Discussion
gohdan - Mar 10, 2011
4 replies by gedata »»
Oct 18, 2015 8:58 PM