This article is about a/an ally in Kamen Rider Zero-One.
"I am Ai-chan."
―Ai-chan's introduction[src]

Ai-chan (アイちゃん Ai-chan, lit. Little Ai) is a special A.I. "friend" created by Hakase Bot and conceptualized by Aruto Hiden to serve as a companion to Isamu Fuwa, Yua Yaiba, and later Gai Amatsu.


Ai-chan on Table

Unlike traditional Humagears, Ai-chan was designed to only listen and encourage people to do what they want. Ai-chan does not suggest or recommend actions and can only provide advice.

After Isamu discovered that his family was still alive, Isamu was unsure of whenever to go see them. Thanks to Ai-chan, Isamu was encouraged to do so. After Yua was hospitalized for her injuries from her battle with Ark-Zero, she felt regret from freeing Naki from Isamu. Knowing that Ai-chan was able to help him, Isamu decides to lend her the small device, hoping it will help console her. Ai-chan then encourages Yua to apologize directly to Isamu for her past actions, which she did in the end. After Isamu returns Ai-chan module to Aruto, Aruto left Ai-chan inside Hiden Intelligence to console a distraught Gai. Ai-chan manages to identify Gai problems and prompted Zea to create Thouser using the 3D printer, thus redeeming Gai from his own past.

She later speaks to Fukuzoe of how he'd protected the company longer than anyone and it was time for him to inspire them with his dream.

Behind the Scenes


Ai-chan is portrayed by M • A • O, also known as Mao Ichimichi (市道真央 Ichimichi Mao) who had previously played Luka Millfy/Gokai YellowIcon-crosswiki in Kaizoku Sentai GokaigerIcon-crosswiki & voiced Raptor 283/Washi PinkIcon-crosswiki in Uchu Sentai KyurangerIcon-crosswiki.


  • Ai-chan's name comes in three meanings. The spelling of her name relates to artificial intelligence, or "A.I.", Ai also means Love ( Ai) in Japanese, and it is the Japanese reading of the Latin letter I.



Icon-zero-one Kamen Rider Zero-One
Kamen Riders
Soreo Hiden - Aruto Hiden - Isamu Fuwa - Yua Yaiba - Jin - Horobi - Ikazuchi - Naki - Gai Amatsu - Ark - Esu
Movie-exclusive: Soreo Hiden - Esu
Hiden Zero-One Driver - A.I.M.S. Shotriser - MetsubouJinrai Forceriser - Zetsumeriser - ZAIA Thousandriver - Cycloneriser - Raidriser - ZAIA Slashriser - Ark Driver - Hiden Zero-Two Driver - Zetsumetsu Driver - Eden Driver - Progrisekeys - Progrise Holder - Progrisekey Connector - Hiden Risephone - Attache Calibur - Attache Shotgun - Attache Arrow - Breaking Mammoth - Giger - Buaruku Sabers - Authorise Buster - Assault Grip - Thousand Jacker - Progrise Hopper Blade - ZAIA Spec - Nihon Ookaminotsume - Claw Assault
Hiden Intelligence: Korenosuke Hiden - Soreo Hiden - Jun Fukuzoe - Sanzo Yamashita
Humagears: Izu - Shesta - Soreo Hiden - Wazu Nazotoku - Subaru - Hakase Bot - Fukkinhoukai Jiro
Legend Riders: Sougo Tokiwa - Geiz Myokoin - Woz - Tsukuyomi
Humans: Norio Uozumi - Go Sakurai - Satoshi Sakurai - Choichiro Ishizumi - Seiji Tazawa - Satō - Yuta Yomura - Isao - Shinya Owada - Ichikyo Amatsu
Humagears: Mageana - Ikkan Nigiro - Anna - Mashirochan - Dr. Omigoto - Z #5 - Delmo - Love-chan - Midori
A.I.s: Zea - Zat - Ai-chan - Thouser
Ark - Horobi - Naki - Jin - Ikazuchi - Little Assassin - Azu
Monsters: Berotha Magia - Kuehne Magia - Ekal Magia - Neohi Magia - Onycho Magia - Vicarya Magia - Gaeru Magia - Mammoth Magia - Dodo Magia - Arsino Magia
Footsoldiers: Trilobite Magia - Dodo Magia Chick - Battle Magia
Other Villains:
Finis - Will
Gai Amatsu - Williamson Yotagaki
ZAIA Spec Representatives: Rentaro Tachibana - Tatsumi Arayashiki - Naoto Ichimori - Takeshi Homura - Masamitsu Yuto
Other: Daiki Kyogoku
A.I.M.S.: Isamu Fuwa - Yua Yaiba - Naki - Eida - Ono - Degawa - Shida - Eifuku - Ito
Monsters: Crushing Buffalo Raider - Splashing Whale Raider - Dynamaiting Lion Raider - Storming Penguin Raider - Scouting Panda Raider - Fighting Jackal Raider
Footsoldiers: Invading Horseshoe Crab Raiders
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