Edit Anime Information
What would you like to edit?

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: Original
Duration: 24 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 7.571 (scored by 21,272 users)
1 indicates a weighted score. Please note that 'Not yet aired' titles are excluded.
Ranked: #13852
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #1245
Members: 47,428
Favorites: 583
Ranked #1385Popularity #1245Members 47,428
Add to List
Episodes: /26
buy from amazon


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...


No background information has been added to this title. Help improve our database by adding background information here.

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, Youta
Tsuruoka, Youta
Sound Director
Nakamura, Kenji
Nakamura, Kenji
Episode Director

Edit Opening Theme

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

Edit Ending Theme

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

More reviewsReviews

Nov 18, 2007
JackCox (All reviews)
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
Jul 16, 2015
thenh782 (All reviews)
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
Feb 27, 2008
Huntsman (All reviews)
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
Oct 18, 2008
cidz (All reviews)
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


Recent News

Recent Forum Discussion

Poll: Big O Episode 26 Discussion
gohdan - Mar 23, 2011
23 replies by Manu_ »»
Dec 9, 2016 6:58 AM
Poll: Big O Episode 9 Discussion
gohdan - Mar 6, 2011
7 replies by Hellerick »»
Nov 25, 2016 8:00 PM

Recent Featured Articles

Top 10 Kamidere Characters in Anime: What's a Kamidere?

Top 10 Kamidere Characters in Anime: What's a Kamidere?

In life being confident is important. However, Kamidere take it to a completely different level. Here are 10 that set the standard for what it means to be Kamidere.

by AlanV


Top 10 Rich Anime Characters

Top 10 Rich Anime Characters

Fiction is filled with the adventures of the super rich, from renegades like Zorro, geniuses like Tony Stark (a.k.a. Iron Man), and lonely rich kids like... Richy Rich. Anime is no exception to this rule and has loads of characters with money as a key defining characteristic.

by NicWat10