AniwikTrack. Discover. Discuss.
HomeNews(new stories)BrowseCharacters
Sign InSign Up
AniwikTrack. Discover. Discuss.

Discover, track, and review anime. Join a passionate community of anime enthusiasts.

Browse

  • Browse Anime
  • Characters
  • News

Community

  • Discover Users
  • Sign In
  • Create Account

© 2026 Aniwik. All rights reserved.

HomeBrowse(new stories)NewsMy ListCharacters
Detective Conan - Anime poster
  1. Home
  2. Characters
  3. Ai Haibara
Ai Haibara portrait

Ai Haibara

灰原哀

Popularity
1.3Kfans

Popular · 1.3K community favorites

Appearances
1anime
Voice Actors
1actor
Languages
1dub

Ai Haibara hides a past far darker than her quiet schoolgirl appearance suggests. Born Shiho Miyano, she was once a chemist for a criminal organization, working under a codename, and she personally created a poison that is meant to kill whoever takes it. When the same organization harms her older sister, Shiho turns against them and tries to take her own life with the poison she built, but instead of dying, she is shrunk down into the body of a child.

In that new, small body, she takes on a new name and goes into hiding, taken in by an inventor who gives her a safe place to stay and keeps her secret. She ends up at the same elementary school as Conan Edogawa, the shrunken form of detective Shinichi Kudo, and quickly figures out exactly who he really is, since she understands her own poison better than anyone. At first, she keeps to herself, cold and guarded around the group of kids Conan hangs around with, and Conan is uneasy about her presence given her ties to the people hunting him.

Over time, though, Haibara slowly lets her guard down, coming to genuinely care about the friends she first kept at arm's length, even if she still acts sharp-tongued and distant on the surface. She spends much of her time quietly working on a cure for the poison that changed both her and Conan's lives, even though most of her old research was destroyed. Her knowledge of the organization that once employed her makes her one of the few people Conan can truly rely on in his fight against them.

On screen

Appears in

Detective Conan poster

Detective Conan

Supporting Role1996TV8.20
AdventureComedyPsychologicalMystery

Detective Conan is one of the longest-running anime shows ever made. It began on Japanese TV on January 8, 1996, and it is still going today, with more than 1,200 episodes. The studio TMS Entertainment makes it together with Yomiuri Telecasting. The show is based on a manga (a Japanese comic) by Gosho Aoyama. His comic started in the magazine Weekly Shonen Sunday in January 1994. In some English releases, the show is called Case Closed. This new name was used because of legal problems with the name Detective Conan. The hero is Shinichi Kudo. He is a teenager, but he is already famous. He helps the police solve hard crimes, and newspapers love him. He is smart, a little proud, and he loves Sherlock Holmes stories. One evening, he goes to an amusement park with his close friend Ran Mori. There, he sees two men in black clothes doing something secret and against the law. He follows them, but one of the men hits him from behind. Then they make him swallow a poison. The poison does not kill him. Instead, his body becomes the body of a small child. Now Shinichi has a big problem. If the men in black learn that he is alive, they may come back to finish the job. They may also hurt the people close to him. So he hides who he really is. He takes a new name, Conan Edogawa. He makes this name from two famous mystery writers: Arthur Conan Doyle and Edogawa Ranpo. He goes to live with Ran and her father, Kogoro Mori. Kogoro is a private detective, but he is not very good at his job. He is lazy, and he often gets the answer wrong. Conan hopes that living in a detective office will help him find clues about the men in black. This leads to the show's most famous joke. Conan solves case after case, but nobody listens to a little kid. So he uses small tools made by his old neighbor, the inventor Dr. Agasa. One tool is a watch that shoots a sleeping dart. Another is a bow tie that can change his voice. Conan puts Kogoro to sleep, hides nearby, and explains the answer in Kogoro's voice. Soon, people call Kogoro 'Sleeping Kogoro', a great detective, and he has no idea why. Conan also joins a group of elementary school friends called the Detective Boys. Later, a quiet girl named Ai Haibara joins his class. She once worked with the dark group, called the Black Organization, and she knows about the poison. Most episodes tell one mystery. A case may last one episode or a few. There is a crime, often a murder. Conan looks for clues and talks to the people who were there. At the end, he explains step by step how the crime happened and who did it. The explanations are clear, so viewers can try to solve the case too. Between these stand-alone mysteries, the main story moves forward slowly, as Conan gets closer to the Black Organization. The show also has comedy and a sweet, slow love story. Ran misses Shinichi very much, and she has no idea that he is the small boy living in her home. The manga is one of the best-selling comics of all time. By January 2023, it had more than 270 million copies in print around the world. The franchise also has many movies. Since 1997, a new film has come out almost every year, and there are now 29 of them. For people who love puzzles, clever tricks, and a hero who never gives up, Detective Conan is a classic worth knowing.

Cast

Voice actors

1 actor
Megumi Hayashibara voice actor portrait
🇯🇵

Megumi Hayashibara

AniList Profile

Aniwik News

Latest news

All news
The Guy She Was Interested In Wasn't a Guy at All premieres January 8 on Nippon TV, adding Kenjiro Tsuda and Fairouz Ai in its first PV

About The Guy She Was Interested In Wasn't a Guy At All

The Guy She Was Interested In Wasn't a Guy at All premieres January 8 on Nippon TV, adding Kenjiro Tsuda and Fairouz Ai in its first PV

AMAniwik Master·2h ago
Berserk of Gluttony Season 2 teaser hands the director's chair to Kenichi Ishikura, with Yanagisawa moving up to chief director

About Berserk of Gluttony+1

Berserk of Gluttony Season 2 teaser hands the director's chair to Kenichi Ishikura, with Yanagisawa moving up to chief director

AMAniwik Master·2h ago
Gundam SEED FREEDOM ZERO dates its Japanese premiere for January 15, 2027, with North American screenings a month later

About Mobile Suit Gundam SEED FREEDOM+1

Gundam SEED FREEDOM ZERO dates its Japanese premiere for January 15, 2027, with North American screenings a month later

AMAniwik Master·2h ago

From the same world

Related characters

From the same world

Related characters

Conan Edogawa character image

Conan Edogawa

Kaito Kuroba character image

Kaito Kuroba

Heiji Hattori character image

Heiji Hattori

Ran Mouri character image

Ran Mouri

Kogorou Mouri character image

Kogorou Mouri

Kazuha Tooyama character image

Kazuha Tooyama

Eri Kisaki character image

Eri Kisaki

Sonoko Suzuki character image

Sonoko Suzuki

Hiroshi Agasa character image

Hiroshi Agasa