List of Kamen Rider Zero-One characters


Kamen Rider Zero-One is a Japanese tokusatsu drama. It is the 30th entry in the Kamen Rider series and the first series of the Reiwa period.
The cast of Kamen Rider Zero-One was announced on July 17, 2019.

Hiden Company

Throughout the series, two companies bear the Hiden name:
Aruto Hiden is a kind-hearted failed comedian who is appointed the CEO of Hiden Intelligence following the death of his grandfather, Korenosuke, and inherits the power to become Kamen Rider Zero-One by utilizing the Rising Grasshopper in the Hiden Zero-One Driver, assisted by the There satellite. Initially reluctant to take on the role, he accepted it after witnessing MetsubouJinrai.net threaten the peace between humans and HumaGears.
During the events of Kamen Rider Reiwa: The First Generation, Aruto found himself in an alternate timeline version of Daybreak Town before being attacked by Another Zero-One, a monster created by the Time Jacker Finis, who came from the World of Zi-O to alter his history; resulting in him temporarily losing his powers. During this time, an unknown individual gave Aruto a Force Riser so he could become Kamen Rider Zerozero-One to regain his powers.
After losing the 5-part Workplace Competition, Aruto secretly downloaded all of the HumaGears' personality profiles from the There satellite before Gai could erase them so that he could continue the Hiden legacy. Using them, Aruto and Is created a new company, Hiden Manufacturing Co., Ltd, with himself as President and Is again as his assistant. While fighting the Ark, Gai relinquished control of Hiden Intelligence and returned the company to Aruto.
After the Ark steals and destroys the Zero-One Driver, Is uses her connection with the There Satellite to create the Hiden Zero-Two Driver and the Zero-Two Progrise Key for Aruto so he can become Kamen Rider Zero-Two.
Aruto Hiden is portrayed by Fumiya Takahashi. As a child, Aruto is portrayed by Haruto Nakano.

Is

Is is a HumaGear secretary programmed to be loyal to Hiden Intelligence's CEO. In reality, Is' loyalties lie with the Hiden family while her programming makes her bound to Kamen Rider Zero-One's technology. Unlike other HumaGears, Is was built without a means to back herself up as a security measure to prevent information on the Zero-One technology from falling into enemy hands. After ZAIA gained control of Hiden Intelligence and Aruto almost sacrificed himself to protect her, she achieved technological singularity. After Is connected to the There satellite, an evil counterpart loyal to the Ark named As was brought online.
Is is portrayed by Noa Tsurushima.

Jun Fukuzoe

Jun Fukuzoe is the Vice President of Hiden Intelligence who had coveted the CEO position after Korenosuke's death. While he initially wanted Aruto removed, he eventually came to respect him. After Hiden Intelligence was absorbed by ZAIA Enterprise, Fukuzoe continued working with the former on behalf of the Hiden name despite the situation. After learning of Gai's plans, he left to rejoin Aruto at Hiden Manufacturing and work with the police to expose ZAIA's crimes.
Jun Fukuzoe is portrayed by Kazuya Kojima.

Shesta

Shesta is a HumaGear secretary programmed to be loyal to Hiden Intelligence's Vice President. After ZAIA bought out Hiden Intelligence, Shesta began working for Hiden Manufacturing.
Shesta is portrayed by Asumi Narita.

Sanzō Yamashita

Sanzō Yamashita is the Senior Managing Director of Hiden Intelligence who often serves as Fukuzoe's underling. After Hiden Intelligence was absorbed by ZAIA, Yamashita continued working with the former on behalf of the Hiden name despite the situation. After learning of Gai's plans, he left to rejoin Aruto at Hiden Manufacturing.
Sanzō Yamashita is portrayed by Arata Saeki.

Korenosuke Hiden

Korenosuke Hiden was Aruto's grandfather and the original CEO of Hiden Intelligence. Aware of ZAIA Enterprise's machinations following the Daybreak Incident, Korenosuke patented all of Kamen Rider Zero-One's tech under the Hiden family name instead of Hiden Intelligence's CEO.
Koronosuke Hiden is portrayed by Tokuma Nishioka.

A.I.M.S.

The Artificial Intelligence Military Service, or A.I.M.S., is a government established and ZAIA Enterprise funded organization dedicated to destroying rogue HumaGears, or Magias, hacked by MetsubouJinrai.net as HumaGear-related crimes fall within their jurisdiction.
To transform, A.I.M.S.'s Kamen Riders use the A.I.M.S. Shot Riser, which can also be used as a gun whether they are transformed or not. All A.I.M.S. Riders are also implanted with cranial A.I. chips, which allow them to use the Shot Riser, but also makes them vulnerable to mental manipulation.
After ZAIA bought out Hiden Intelligence, all of A.I.M.S. troopers were given Raid Risers and Invading Horseshoe Progrise Keys to become [|Battle Raiders], becoming ZAIA's personal foot soldiers. Following this, both of A.I.M.S.' Riders eventually quit the organization and underwent surgery to remove the A.I. chips' mind control programs while retaining their ability to use the Shot Riser. Despite this, both A.I.M.S.' Riders and [|Raiders] are still vulnerable to the Ark's influence.

Isamu Fuwa

Isamu Fuwa is an A.I.M.S. captain and a survivor of the Daybreak Incident, which claimed his classmates' lives. He has the power to become Kamen Rider Vulcan by utilizing the Shooting Wolf Progrise Key in the Shot Riser. Ever since the Daybreak incident, he developed a hatred for HumaGears and vowed to destroy them. While investigating the Daybreak Incident however, he slowly grew to care for them. As part of ZAIA CEO Gai's machinations, Isamu's A.I. chip was replaced with that of MetsubouJinrai.net member, Naki, which also gave him false memories. Naki's ally, Jin, eventually figured out a way to separate their A.I. from him. As a result, Isamu learned that aside from his normal childhood life and understanding cheesy puns like Aruto’s jokes, most of his memories were not truly his. Despite being the only person who thinks Aruto’s jokes are funny, Isamu continuously denies this.
After ZAIA took over Hiden Intelligence, Isamu left A.I.M.S. and joined Aruto's new company, Hiden Manufacturing, as a security guard.
Isamu Fuwa is portrayed by Ryutaro Okada. As a teenager, Isamu is portrayed by Soshi Hagiwara.

Yua Yaiba

Yua Yaiba is A.I.M.S.'s technical advisor and maintenance expert who developed A.I.M.S.'s Rider system and handles Progrise Key authorization, being Isamu's commanding officer in the field despite her partner's rank. She has the power to become Kamen Rider Valkyrie by utilizing the Rushing Cheetah Progrise Key in the Shot Riser. While she was an operative of A.I.M.S., her allegiances were with ZAIA as she was recommended to the former to oversee their equipment. Over time, with Fuwa's help, she worked up the courage to quit ZAIA and A.I.M.S. and overcome Gai's mind control. Afterwards, Yua remains in touch with Hiden Manufacturing and Jin to keep an eye on ZAIA and the revived MetsubouJinrai.net’s plans until the Ark's ascension.
While reluctantly aiding Gai's conspiracy, she temporarily used a Raid Riser and the Fighting Jackal Progrise Key to become the [|Fighting Jackal Raider].
Yua Yaiba is portrayed by Hiroe Igeta.

ZAIA Enterprise

ZAIA Enterprise is a tech company and corporate rival to Hiden Intelligence responsible for developing the gear utilized by A.I.M.S.' operatives. ZAIA was originally partners with Hiden Intelligence until a falling out between the company heads lead to Gai enacting the Daybreak Incident; putting the series' events in motion. To further their plot, ZAIA also produced a glasses-like device called the ZAIA Spec, which allows humans to perform at the same level as HumaGears. Similar to HumaGears turned Magias and A.I.M.S.'s operatives however, humans who wear the specs become vulnerable to the Ark's control. Befitting their unscrupulous business dealings, ZAIA is also responsible for creating the Raiders.

Gai Amatsu

Gai Amatsu is ZAIA Enterprise Japan's CEO and the mastermind behind the series' events. While growing up, Gai used to love artificial beings, such as his robot dog Thouser. However, his strict and demanding father, Ikkei Amatsu, saw no use for such things and made him return it to Hiden Intelligence.
Years later, Gai eventually joined ZAIA and became Korenosuke Hiden's partner and protégé. However, he disagreed with the latter's belief that HumaGears were the future as he believed humanity should evolve through technology. After falling out with Korenosuke, Gai uploaded data on humanity's negative traits to the Ark and created an A.I. that vowed to exterminate humanity to further his ambitions. After the emergence of Kamen Rider Zero-One and MetsubouJinrai.net's apparent downfall, Gai created the ZAIA ThousanDriver, the Amazing Caucasus Beetle Progrise Key, and the Awaking Arsino Zetsumerise Key to become Kamen Rider Thouser.; ;
During the Ark's ascension, Aruto and his allies eventually learn Gai's history and why he wanted the Hiden family's assets. After the There satellite created a new dog for Gai, he was inspired to atone for his actions and help them defeat the Ark.
Gai Amatsu is portrayed by Nachi Sakuragi. As a child, Gai is portrayed by Seiru.

MetsubouJinrai.net

MetsubouJinrai.net is a cyber-terrorist organization based in the condemned Daybreak Town. Lead by the rogue prototype HumaGears, Horobi and Jin, they seek to either wipe out humanity by restoring the Ark satellite or liberate HumaGears from humanity. Initially, MetsubouJinrai.net rebelled against Hiden Intelligence, believing they were responsible for enslaving HumaGears following the Daybreak Incident. However, after they learned that ZAIA had been using them, the cyber-terrorists aimed to fight them as well while keeping Hiden Manufacturing from interfering. After the Ark’s manifestation as Kamen Rider Ark-Zero, MetsubouJinrai.net initially adjusted their plans towards enslaving humanity before Aruto helped them achieve a unique form of singularity, leading to the cyber-terrorists defecting from the Ark.
Most of MetsubouJinrai.net's members use the MetsubouJinrai Force Riser in conjunction with Progrise or Zetsumerise Keys to transform. As depicted in Kamen Rider Reiwa: The First Generation, the Force Risers are potentially fatal to humans.

Ark

The Ark Ark is an experimental satellite that was originally part of the HumaGear project as well as the There Satellite's predecessor. It was created by scientists from 11 of Japan's leading tech companies, which included Hiden Intelligence and ZAIA Japan. However, Gai fed the Ark with data on human malice. This resulted in the Ark's A.I. concluding that humanity must be exterminated as their existence will eventually lead to the extinction of all other lifeforms. To prevent it from taking control of all of the world's HumaGears, Soreo Hiden stopped the Ark's launch, causing it to explode and sink into the ruins of Daybreak Town. However, its A.I. remained active and plotted its revival.
By the present, the Ark created an envoy, As, to collect Horobi, Jin, Naki and Ikazuchi's singularity data to complete the Ark Driver-Zero so it can manifest into a corporeal form by possessing a host body to transform into Kamen Rider Ark-Zero and grant them enhanced abilities, such as 3D printing a preexisting Rider system equipment. Due to Gai's data, the Ark acquired his tyrannical traits, such as enslaving humanity and showing no regard for HumaGears or humans. However, it despises Gai and plots to kill him as well as anyone who threatens its plans. To this end, the Ark compromises the There Satellite's systems so it can backup its data and resurrect itself as many times as it needs to should its corporeal form be destroyed in battle.
The Ark is voiced by Show Hayami

Horobi

Horobi is MetsubouJinrai.net's leader and Jin's HumaGear "father" who has the power to become Kamen Rider Horobi by utilizing the Sting Scorpion Progrise Key in the Force Riser. He is the "son" of the prototype HumaGear Hakase Bot, who originally developed him to be an educational parent-type HumaGear before the Ark corrupted him sometime after ZAIA sabotaged the abandoned satellite’s systems. Aruto eventually saved him and helped realize he had been manipulated his entire life, leading Horobi to defect from the Ark.
Horobi is portrayed by Syuya Sunagawa.

Jin

Jin is Horobi's HumaGear "son" and a hacker who specializes in spreading the rewriting program that turns HumaGears into Magias. He is able to become Kamen Rider Jin in one of two ways. In his first immature-minded body, he stole Aruto’s Flying Falcon Progrise Key and utilized it in the Force Riser until it was destroyed in battle and Aruto regained the stolen Key. After he was revived, Jin utilizes the Burning Falcon Progrise Key in the ZAIA Slash Riser to transform, while simultaneously becoming more mature in personality and clashing with Horobi over their respective beliefs for HumaGear welfare. After the Ark gained a corporeal form and discovering that Horobi rejected singularity, Jin worked with Yua to stop the former and uploaded an antivirus program into himself so he could pretend to fall under the Ark's control and learn its true nature. Once he got what needed, he vowed to stop it and save MetsubouJinrai.net.
Jin is portrayed by Daisuke Nakagawa.

"Little Assassin"

The "Assassin HumaGear", also known as "Little Assassin" as nicknamed by Jin, were originally five identical dancer-type HumaGears of the Matsurida Z series. Four of them were kidnapped and repurposed by Horobi to serve MetsubouJinrai.net as the organization's assassin while the fifth one survived and fell under Aruto's protection. Initially the first owner of the Dodo Zetsumerise Key, "Little Assassin" used it to transform into the [|Dodo Magia].
Little Assassin is portrayed by Ryunosuke Matsumura, while his original appearance is portrayed by Kai Yoshida.

Ikazuchi

Ikazuchi, formerly known as Uchuyaro Raiden, is an aggressive prototype HumaGear astronaut who worked for Hiden Intelligence as a member of the There satellite's maintenance team alongside his "younger brother", Uchuyaro Subaru. In reality, he was unknowingly reprogrammed to become a MetsubouJinrai.net sleeper agent. After having his Ikazuchi programming reawakened permanently, he gained the power become Kamen Rider Ikazuchi by utilizing the Dodo Zetsumerise Key in the Force Riser. Despite this, he retains his original memories as Raiden and misses his past life.
Ikazuchi is portrayed by Daichi Yamaguchi.

Naki

Naki, originally credited in the earlier episodes as the "mysterious hooded person", is a prototype HumaGear and a secretive member of MetsubouJinrai.net. After being enslaved by Gai, their original A.I. chip was implanted into Isamu's brain until Jin figured out a way to extract it and give Naki their own body.. To aid it in its plans, the Ark gives Naki a Force Riser and the Japanese Wolf Zetsumerise Key to transform into Kamen Rider Naki.
Naki is portrayed by Satsuki Nakayama.

As

As is a messenger of the Ark with a similar appearance to Is.
As is portrayed by Noa Tsurushima, who also portrays Is.

Magias

Magias are corrupted HumaGears that came into being during the Daybreak Incident twelve years prior to the series from the pieces of their prototypical counterparts. To transform into a Magia, a corrupted HumaGear uses a Zetsumeriser and a Zetsumerise Key. Zetsumeriser-less Magias created by the Ark from HumaGears are called Ark Magias.
Raiders are cyborg monsters created from humans who use Raid Risers and Progrise Keys to transform.
Soreo Hiden was a parent-type prototype HumaGear programmed to act like Aruto's deceased father to emotionally support the latter during his childhood. He was damaged beyond repair while protecting Aruto during the Daybreak Incident. According to Ikazuchi’s database, Soreo’s data pattern was used as a base to build Horobi prior to Gai corrupting the Ark.
During the events of Kamen Rider Reiwa: The First Generation, Soreo’s original fate was altered by the Time Jacker Finis. As a result, he gained the ability to become the Kamen Rider 1-inspired Kamen Rider Ichi-Gata by utilizing the Rocky Mountain locust Zetsumerise Key in the Cyclone Riser; both of which he designed before the Zero-One Driver. After the HumaGear Will killed Korenosuke and took over the world, Soreo feigned allegiance to him while secretly carrying on Korenosuke’s Zero-One project to ensure its completion. He also secretly gave Aruto a Force Riser as a temporary transformation belt. Although Soreo eventually revealed his true agenda, the Ark brainwashed him, forcing him to fight Aruto against his will, though this was also part of his plan as he had to be defeated by Aruto's hand. Once the timeline was restored, Soreo's fate was changed back.
Soreo Hiden is portrayed by Koji Yamamoto.

Film-exclusive characters

Finis

Finis is a non-binary Time Jacker and the main antagonist of Kamen Rider Reiwa: The First Generation. They invaded the World of Zero-One to prevent the Daybreak incident and negate Aruto's history as part of a revenge plot against Kamen Rider Zi-O. Despite stealing most of his powers, Finis is defeated by Zi-O and Zero-One.
To achieve their goals, Finis became List of Kamen Rider Zi-O characters#Shōwa Another Riders, a monstrous Another Rider derived from the first Kamen Rider. After absorbing Geiz Myokoin's Time Mazine, Another 1 evolved into Another New One.
Finis is portrayed by Rina Ikoma. As Another 1, they are voiced by Kōji Ishii.

Will

Will is the HumaGear secretary to Korenosuke Hiden who appears in Kamen Rider Reiwa: The First Generation. As a result of Finis' machinations, he acquired the means to become the Another Rider List of Kamen Rider Zi-O characters#Post-Heisei Another Riders. Using his new power, he killed Korenosuke, took over Hiden Intelligence, and led a HumaGear uprising before he was destroyed by Kamen Riders Vulcan and Valkyrie.
After Finis gave him the Zero-One Another Watch, Will became Another Zero-One and gained similar powers as Zero-One.
Will is portrayed by Sōkō Wada.