This article is about a/an arsenal in Kamen Rider Zero-One.


ZAIA Spec (Syncnet)

The ZAIA Spec (ザイアスペック Zaia Supekku) is an eyeglass attachment with an A.I. interface developed by ZAIA Enterprise. It is meant to enhance the human brain to allow it to run at the same speed as supercomputers.

However, users of ZAIA Spec can have their emotions manipulated by the Raidriser, which they then use to transform into Raiders. Another defect is the user can also be influenced by Ark when the Spec is hacked.

Syncnet also have their own ZAIA Spec, with recolored the ZAIA Spec body, and replace the x-shaped piece with their logo.



Workplace Competition

Gai Amatsu created the ZAIA Spec with the intended purpose to help people process at the speed of an A.I. The other purpose of the device is to replace the need of a Humagear by allowing a human to be just as efficient as one. To make sure the ZAIA Spec could live up to its purpose, Gai gave every chosen competitor representing him to be used as proof of its abilities.

Hiden Manufacturing

After Gai Amatsu had won the competition, he announced the complete shutdown and destruction of Humagears. For those who gave him their Humagear, he would give the customer a complimentary ZAIA Spec. The ZAIA Specs were also given to A.I.M.S troops for aiding them in destroying/shutting down Humagears.

Unfortunately, a defect wasn't foreseen by Gai until soon afterward; Naki had been revived by Yua as a favor from Jin after Yua's resignation. The ZAIA Spec were hacked by Naki leading humans who wore them to behave similar to the Magia.


  • The concept of the ZAIA Spec is similar to that of Google Glass, a brand of smart glasses developed by Google, which ceased prototype production in 2015 and began producing its "enterprise edition" for companies in 2017.
  • The ZAIA Specs are similar to that of the Deep Connect's Demia from Kamen Rider Ghost, with both being special eyewear infused with technology and can be manipulated by their series' respective antagonists for their own goals, like taking over their users' minds. However, Demia is digital contact lenses instead of attachment on eyeglasses.
  • The interior of the Ark-One Progrisekey has a device similar to the ZAIA Spec named the Ark Spec.
    • This is strange considering the Ark-One Progrisekey was created by the Ark and has no known relation to ZAIA. This design choice was likely made in connection to a plot line that was dropped as part of the changes made to the series as a result of the Covid-19 pandemic.


Icon-zero-one.png Kamen Rider Zero-One
Kamen Riders
Soreo Hiden - Aruto Hiden - Isamu Fuwa - Yua Yaiba - Jin - Horobi - Ikazuchi - Naki - Gai Amatsu - Ark - S
Movie-exclusive: Soreo Hiden - S - Bell - Kamen Rider Abaddon - Leon Arkland - Kamen Rider MetsubouJinrai (Jin, Horobi, Ikazuchi & Naki)
Stageshow-exclusive: Azu - Little Assassin
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 - Abaddoriser - MetsubouJinrai Driver
Progrisekeys - Progrise Holder - Progrisekey Connector - Hiden Risephone - Rider Models
Attache Calibur - Attache Shotgun - Attache Arrow - Breaking Mammoth - Giger - Buaruku Sabers - Authorise Buster - Assault Grip - Thousand Jacker - Progrise Hopper Blade - ZAIA Spec - Knuckle Demolition - 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 - Ikkei 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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