10/13/1999 - 03/27/2003 Finished
The Big O (THEビッグオー)
Paradigm City, a city of amnesia and a place of belonging. It remains populated by forgotten pasts and the ruins of their labors due to a calamity 40 years ago. Shrouded in a fog-like mystery, it is up to people like Roger Smith to shine a light through the mist. Acting as a professional negotiator and suave agent, Roger is a self-tailored ladies man whose only love is for funeral black. However, as he gets deeply involved with his clients, what often starts as a simple negotiation evolves into Roger saving Paradigm from crime and peril. In the process, Roger stumbles even deeper into the untold folds of the city. As a rule, things are hardly ever as they appear. Serving as gray knight in a gray world, Roger is not without allies. By his side are Norman, a loyal and widely skilled butler, and Dorothy, a human-like android with deadpan snark. Together with the relic Big O, a jet-black mecha of gargantuan size and weight, they help Roger serve iron justice to Paradigm's lurking villains as he discovers the truth about 40 years ago.
26
Total episodes
26
Canon episodes
0
Filler episodes
0%
% Filler
Canon episodes · 26 Filler episodes · 0
Every season
Seasons and sequels
Single Season
Currently, The Big O has no sequels, prequels, or registered spin-offs. This is the complete story available at the moment.
What to watch, what to skip
Watch order: filler vs canon
You're in luck! The Big O doesn't have a single filler episode: all 26 episodes are canon. It's a faithful adaptation of the original manga, so you can enjoy it from first to last without skipping anything or checking any list of expendable episodes.
The 26 episodes of The Big O aired in 1999–2003 and follow the story's chronological order. There are no transition episodes, no needless recaps, no arcs invented by the studio: every chapter advances the main plot and develops the characters just as the source material does.
In short, the watch order for The Big O is as simple as it gets: start at episode 1 and keep going to episode 26 without detours. If you came looking for which The Big O episodes are filler so you could skip them, the answer is that there aren't any.
Episode by episode
Complete guide by season
26 Episodes
| # | Episodes | Aired | Type |
|---|---|---|---|
| 1 | Roger The Negotiator10/13/1999 | 10/13/1999 | Canon |
| 2 | Dorothy Dorothy10/20/1999 | 10/20/1999 | Canon |
| 3 | Electric City10/27/1999 | 10/27/1999 | Canon |
| 4 | Underground Terror11/03/1999 | 11/03/1999 | Canon |
| 5 | Bring Back My Ghost11/10/1999 | 11/10/1999 | Canon |
| 6 | A Legacy of Amadeus11/17/1999 | 11/17/1999 | Canon |
| 7 | The Call from The Past11/24/1999 | 11/24/1999 | Canon |
| 8 | Missing Cat12/01/1999 | 12/01/1999 | Canon |
| 9 | Beck Comes Back12/08/1999 | 12/08/1999 | Canon |
| 10 | Winter Night Phantom12/15/1999 | 12/15/1999 | Canon |
| 11 | Daemonseed01/05/2000 | 01/05/2000 | Canon |
| 12 | Enemy is Another Big!01/12/2000 | 01/12/2000 | Canon |
| 13 | R・D01/19/2000 | 01/19/2000 | Canon |
| 14 | Roger the Wanderer01/02/2003 | 01/02/2003 | Canon |
| 15 | Negotiation with the Dead01/09/2003 | 01/09/2003 | Canon |
| 16 | Day of the Advent01/16/2003 | 01/16/2003 | Canon |
| 17 | Leviathan01/23/2003 | 01/23/2003 | Canon |
| 18 | The Greatest Villain01/30/2003 | 01/30/2003 | Canon |
| 19 | Eyewitness02/06/2003 | 02/06/2003 | Canon |
| 20 | Stripes02/13/2003 | 02/13/2003 | Canon |
| 21 | The Third Big02/20/2003 | 02/20/2003 | Canon |
| 22 | Hydra02/27/2003 | 02/27/2003 | Canon |
| 23 | Twisted Memories03/06/2003 | 03/06/2003 | Canon |
| 24 | The Big Fight!03/13/2003 | 03/13/2003 | Canon |
| 25 | The War of the Paradigm City03/20/2003 | 03/20/2003 | Canon |
| 26 | The Show Must Go On03/27/2003 | 03/27/2003 | Canon |
Verified legal platforms
Where to watch The Big O
All the platforms where you can watch The Big O legally, with direct links to each service.
We don't have confirmed streaming platforms for this anime yet.
Liked it? Keep going
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Common questions
Frequently asked questions
How many seasons does The Big O have?
The Big O has a total of 1 season. The series is completed. Each season is divided into multiple episodes with stories that advance the main plot of the anime.
How many episodes does The Big O have?
In total, The Big O has 26 episodes in its only season. You can consult the complete episodes table to see the breakdown by season.
What is the best order to watch The Big O?
It is recommended to watch The Big O in chronological broadcast order. This means starting from season 1 and continuing sequentially to the last season. Check our watch order guide which includes information about filler vs canon episodes for an optimal experience.
Where can I watch The Big O online?
The Big O is available on various legal streaming platforms. Check the platforms section at the top of this page to see where it's currently available. Options may vary depending on your geographic region.
Is The Big O a complete anime?
Yes, The Big O is a completed anime. All seasons have already aired and you can enjoy the series in its entirety without waiting for new episodes.
How much filler does The Big O have?
No, The Big O does not have filler episodes. All its episodes are canon and faithfully follow the original manga story, so you can watch all episodes without worrying about skipping anything.
Where can I see The Big O's score and reviews on MyAnimeList?
You can check the score, reviews, characters and statistics for The Big O directly on MyAnimeList, the world's largest anime database. There you'll find the community rating, global ranking and opinions from other fans.