FinishedTV Series1999PG

The Big O

THEビッグオー

7.5

AniLumi score

Kitsu · AniList

by score: #1,976; by score
popularity: #1,587; popularity
episodes: 26; episodes · 24 min each
to binge: 10h 24m; to binge
members: 11K; members

Post Apocalypse Dystopia Science Fiction Mecha Action Fantasy World

+8 more

Piloted Robot Detective Conspiracy Angst Android Parody Psychological Mystery

▶ Where to watch Watch orderMore like this

Where to watch

▶ HIDIVE 📚 Manga on Amazon

Synopsis

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...

Trailer

Episodes (26)

All episodes →

Characters

Cast & voice actors →

Main

Norman Burg

Main

Roger Smith

Main

R. Dorothy Wayneright

Main

Angel Rosewater

Darres

Big Ear

Jason Beck

Cordon Officer

Commander

Crater Site Officer

Chief Engineer

Bartender

By the numbers

7.5

AniLumi score

Average of 2 communities

Kitsu7.623.7K votes
AniList7.407.4K votes

All communities agree closely on this one. Each site's score for The Big O, out of 10, refreshed daily.

Rank by score: #1,976; of all anime on Kitsu
Popularity rank: #1,587; 11K members
Favorited by: 1.3%; 136 of its members

Score breakdown

30% of 3,743 ratings are 9★ or 10★

05001K

966

1★2★3★4★5★6★7★8★9★10★

Show as table

Item	Ratings
1★	37
2★	18
3★	18
4★	133
5★	178
6★	411
7★	876
8★	966
9★	424
10★	682

Do people finish it?

About 1 in 20 people who start The Big O drop it, above the action median of 2.5%. Based on 14K AniList members who started it.

Drop rate: 5.0%; Action median 2.5%
Finished it: 76%; 11K people
On hold: 7.8%; 1.1K paused
Plan to watch: 15K; not started yet

What people who started it did

14K AniList members · plan-to-watch excluded

Finished10,575 · 76%
Watching1,524 · 11%
Paused1,077 · 8%
Dropped695 · 5%

Parents’ guide to The Big O

Best for: Teens (13+) · Rated PG (Teens 13 or older)

Violence & goreMild1 detail hidden to avoid spoilers

Sexual content & nudityNone noted

Sexual violenceNone noted

Disturbing & frightening themesMild1 detail hidden to avoid spoilers

Drugs, gambling & crimeNone noted

From AniList community tags and the official age rating. Levels reflect how many viewers agree each tag applies, not a professional rating, so preview an episode before watching with younger children. Explicit tag names are never shown.

Is The Big O okay for kids? Full guide →

Plan & track

Binge planner

26 episodes × 24 min = 10h 24m

How long to finish The Big O? Set how much you watch per day.

Hours per day2 h Skip openings & endings

days to finish

episodes per day

weekends if you double up

RSS feed for new episodes · Watch order · How long to watch · Is there a next season? · Voice cast · Openings & endings · My list

The Big O FAQ

How many episodes does The Big O have?

The Big O has 26 episodes, each around 24 minutes.

Where can I watch The Big O?

The Big O is available to stream on HIDIVE. Availability varies by region.

Is The Big O finished?

Yes. The Big O finished airing on Mar 27, 2003.

How long does it take to watch The Big O?

The Big O runs about 10h 24m in total (26 episodes of 24 minutes). At two hours a day you can finish it in 6 days.

Is The Big O appropriate for kids?

The Big O is best for teens (13+) and is rated PG (Teens 13 or older). Viewers don't flag any strong content. See the parents' guide on this page for details.

Do people finish The Big O?

5.0% of AniList members who start The Big O drop it, and 76% finish it. The median for popular action anime is 2.5%.

Is The Big O worth watching?

The Big O holds a community score of 7.6/10 from 10,514 Kitsu users and ranks #1976 among all anime by rating.

Compare The Big O with…

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Synopsis

Trailer

Episodes (26)

Characters

By the numbers

AniLumi score

Do people finish it?

Parents’ guide to The Big O

Plan & track

Binge planner

The Big O FAQ

Compare The Big O with…

More Post Apocalypse anime