Anime Like The Big O
If you loved The Big O's Animation and Drama storytelling, these anime deliver a similar experience — selected for art style, narrative depth, and emotional impact. Each includes where to stream it now.
★ Top Picks

PLUTO
When the world's seven most advanced robots and their human allies are murdered one by one, Inspector Gesicht soon discovers that he's also in danger.

Eden of the East
When Saki Morimi gets into trouble with the police while in Washington D.C., she is helped by a Japanese man who calls himself, Akira Takizawa. Akira has only two things, a gun and a cell phone loaded with 8.2 billion yen in digital money.

Ergo Proxy
Thousands of years after Earth’s atmosphere was destroyed, adventure blooms in the strangest of places. The domed city of Romdo is supposed to be perfect, but Re-l Mayer, a young female inspector from the Civilian Intelligence Office, knows better. In this place where humans and robots coexist, she receives a strange message: something is awakening!

Dimension W
Humanity has found a way to achieve infinite energy by using coils to draw it from the fourth plane: dimension "W". With the production of coils having been monopolized by the New Tesla energy company, freelance collectors are hired to find and remove any illegal, unofficial coils. This is the story of collector Kyōma, who also happens to have a huge hatred towards coils. During one of his missions he stumbles upon a female android that perceives herself as being human, leading the two to enter an unlikely partnership.

Made in Abyss
Located in the center of a remote island, the Abyss is the last unexplored region, a huge and treacherous fathomless hole inhabited by strange creatures where only the bravest adventurers descend in search of ancient relics. In the upper levels of the Abyss, Riko, a girl who dreams of becoming an explorer, stumbles upon a mysterious little boy.

Texhnolyze
Denizens of Lux have come to call it "The City" and treat it as a sentient force. Three factions vie for control of the city: the Organo, a strictly professional conglomerate with ties to the criminal underworld in the prosthetics business; the Union, a fanatical populist group interfering with Organo's affairs; and Racan, a marauding group of Texhnolyzed youths.

Mobile Suit Gundam Wing
After Colony (A.C.) 195. Mankind has moved into space. Thousands of people live on giant orbiting space colonies called "Sides." However, the Earth Government, which rules the colonies, is unjust and cruel. A group of revolutionaries builds five robotic weapons called Gundams and plans to send them to Earth to begin their fight for independence. Piloted by five young men, these Gundams carry the hopes and dreams of freedom of the colonists with them as they descend to Earth to begin Operation Meteor!

Plastic Memories
After failing his college entrance exams, 18 year-old Tsukasa Mizugaki is offered a position at the renowned SAI Corporation, known for its production and management of Giftia, androids that possess human emotions. Tsukasa’s position is in the terminal service department where the main job is to recover Giftias that are close to their expiration, a graveyard department in every sense. To make matters worse, Tsukasa is ordered to work with Isla, a female Giftia who is never given any responsibility other than serving tea to co-workers.
More Anime Like The Big O

Great Mazinger
After Koji Kabuto and Sayaka Yumi leave to the USA, it's up to the rash orphan Tetsuya Tsurugi to pilot the next Mazinger robot: the Great Mazinger. Under the direction of Dr. Kenzo Kabuto and helped by his adoptive sister Jun Honou, Tetsuya battles the Miccene Empire.

Steel Jeeg
Hiroshi Shiba is a car racer who is mortally wounded in a laboratory accident, but restored to life by his father, Professor Shiba.

DARLING in the FRANXX
The distant future: Humanity established the mobile fort city, Plantation, upon the ruined wasteland. Within the city were pilot quarters, Mistilteinn, otherwise known as the “Birdcage.” That is where the children live... Their only mission in life was the fight. Their enemies are the mysterious giant organisms known as Kyoryu. The children operate robots known as FRANXX in order to face these still unseen enemies. Among them was a boy who was once called a child prodigy: Code number 016, Hiro. One day, a mysterious girl called Zero Two appears in front of Hiro. “I’ve found you, my Darling.”

Bokurano
During a summer camp, 15 children, 8 males and 7 females, find a grotto by the sea. Deep within they discover working computers and some electronic equipment, and later the owner, a man called Kokopelli. Kokopelli claimed to be a programmer working on a brand new game, in which a large robot has to defend the Earth against fifteen alien invasions. He persuades the children to test the game and sign a contract. All but one of them signs; barely a moment later they mysteriously awaken on the shore believing what happened was just a dream.

Paranoia Agent
Musashino, Tokyo. An elementary schooler repeatedly attacks people in the streets. Known only to the public as "Lil Slugger", none of the victims can recall the young boy's face and only three distinct details are left in their memories: golden inline skates, a baseball cap, and the weapon: a bent golden baseball bat. Detectives Ikari and Maniwa set out to track down the perpetrator and put an end to his crimes.

Ghost in the Shell: SAC_2045
In the year 2045, cybernetic mercenary Motoko Kusanagi returns to Section 9 to face a dangerous new threat: the posthumans.

Blade Runner: Black Lotus
Los Angeles 2032. A young woman wakes up with no memories, and possessing deadly skills. The only clues to her mystery are a locked data device and a tattoo of a black lotus. Putting together the pieces, she must hunt down the people responsible for her brutal and bloody past to find the truth of her lost identity.

Steins;Gate
A group of friends have customized their microwave so that it can send text messages to the past. As they perform different experiments, an organization named SERN who has been doing their own research on time travel tracks them down and now the characters have to find a way to avoid being captured by them.

No Guns Life
Humans that have been physically altered and turned into dangerous weapons are known as the Extended. Juuzou Inui awakens as one of these weapons — with amnesia. But his job as an agent investigating the Extended leads to a mysterious child with Extended ties showing up at his office. Now Inui must keep the child away from street gangs and the megacorporation Berühren, and it won't be easy.

Robotics;Notes
In 2019, Kaito Yashio and Akiho Senomiya are the sole members of the Robotics Club at Central Tanegashima High School in Kyushu, Japan. Kaito is a laid back student and a skilled gamer who is just trying to help Akiho, his childhood friend. She is an energetic positive-thinking girl who yearns to complete the ongoing project of the club: building a functional replica of Gunvarrel, the main robot of a once popular TV series. As they gather new members and try to assemble the robot, Kaito starts stumbling upon secret reports that might reveal a conspiracy of large proportions. Unaware of what he is actually dealing with, Kaito little by little starts discovering clues laid by the mysterious Ko Kimijima.

Bubblegum Crisis Tokyo 2040
MegaTokyo 2040: Tokyo’s workforce is riddled with robots that tend to go on destructive killing sprees. Four young women gear up in cybernetic suits to battle an evil corporation’s bionic pawns while its grip on the city threatens to strangle humanity. In order to shut down an android uprising, these heavy metal heroines flirt with a critical meltdown in an adrenaline-fueled death match between woman and machine!

BACK ARROW
Lingalind is a land enclosed by the Wall. The Wall covers, protects, cultivates, and nurtures the land. One day in Edger, a village on the outskirts of Lingalind, a mysterious man named Back Arrow appears. Arrow has lost his memory, but he claims that all he knows is that “I came from outside the Wall.”
Why These Anime Are Similar
These recommendations share core qualities with The Big O (1999): Animation and Drama themes, comparable animation style, and similar narrative pacing. NoBadPicks uses TMDB collaborative filtering, genre matching, and AI analysis to surface anime most likely to resonate with fans of The Big O.
See full details for The Big O (1999)