Aruto Hiden

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 is the main protagonist of Kamen Rider Zero-One. He is a former comedian and the current CEO of Hiden Intelligence who transforms into .
==History==
===Background===
Aruto Hiden was born on May 1, 1997 as the son of Soreo and Yoshino Hiden. When he was three months old, his parents passed away in an accident, leading to his grandfather Korenosuke Hiden to build a Humagear resembling his father in place of his parents for emotional support. For the rest of his childhood, Aruto loved the Humagear Soreo deeply and aspired to make him happy. When he was ten, Aruto was at Daybreak Town with Soreo when a nearby factory exploded, causing Soreo to shield his son from the explosion. Although Aruto was unharmed, Soreo was severely damaged. Before his shutdown which caused Aruto great grief, he encouraged Aruto to reach for his dreams.
===The President And A Kamen Rider===
In his adulthood, Aruto pursued a struggling career in comedy due to his gag routines involving bad puns. After he was fired from his previous job, Aruto met the secretary Humagear Is and was escorted to Hiden Intelligence to discuss his late grandfather's will. He learned of an imminent crisis involving the Humagears and discovered he was named its succeeding president in order to use the Hiden Zero-One Driver. Although he initially declined the offer, he encountered the Berotha Magia and the corrupted Humagears attacking the theme park. Vowing to protect the dreams of others, Aruto accepted the Zero-One Driver to become Zero-One for the first time. After his first battle, became more accepting of his new status as president of his family company.
Because of his position, Aruto was required to participate in sales activities to restore the publicity of the Humagears, while devoting himself to battling MetsubouJinrai.net as Zero-One with assistance from Isamu Fuwa and Yua Yaiba, agents of the government task force A.I.M.S. who fight as 'Kamen Rider Vulcan' and 'Kamen Rider Valkyrie' respectively. Due to his inexperience in running a company, his executive decisions were often criticized by long-time employees Jun Fukuzoe and Sanzo Yamashita, yet it never deferred him from appreciating the value of Humagears in everyday life. 
===Kamen Rider: Reiwa The First Generation===
One day, while arriving late to the office, Aruto noticed something strange with the world as there were more Humagears than usual. Upon arrival to Hiden Intelligence, he is driven away by Will, who claimed to be the company's president and transformed into Another Zero-One. Aruto tried to fight him but his powers were slowly draining. After losing the Zero-One Driver, Aruto escaped and was rescued by Isamu Fuwa and Yua Yaiba, who brought him to the human resistance base. After reuniting with Is who had retained her memories like Aruto due to Satellite There's temporal protection, she explained that there was an alternation of the timeline, but was unable to pinpoint exactly when it had occurred. As Will brought the Magia to raid the resistance base, Aruto, being unable to transform into Zero-One for the time being, is then given a Forceriser by an unknown figure to become Kamen rider ZeroZero-One in the meantime.
As soon as Sougo Tokiwa and his crew arrived in the World of Zero-One, Aruto accompanied them to the year 2007 and discovered that the Daybreak Town Accident had never occurred. He also encountered his Humagear father Soreo Hiden as an active Rider, Kamen Rider Ichi-Gata, who intended to sabotage Ark's launch into space, but was stopped by Will, who became Another Zero-One due to him receiving assistance from the Time Jacker Finis. 
Returning to the altered 2019, Aruto headed over to Hiden Intelligence to confront Will with his dream of a peaceful human-Humagear coexistence. With the human resistance backing him up, Aruto as ZeroZero-One entered a decisive battle with his father, Ichi-Gataa, who later threw the match in order to allow his son to restore the timeline. With the timeline in the process of being repaired, Aruto regained his original powers and joined Zi-O to defeat Finis for good.
===An Evolving Zero-One===
When Hiden Intelligence's declining reputation following the presence of MetsubouJinrai's Assassin-Type Humagears, Aruto was briefly forced to go on the run while his allies try to uncover the truth. During a battle with the Dodo Magia, Aruto was given a new Progrisekey by Is to upgrade into Zero-One Shining Hopper. Although the form was deemed incomplete, the Progrisekey was eventually reconfigured to suit Aruto's growing strength. While communicating with the Astronaut Humagears, Aruto learned from Fuwa that there is a spy within Hiden Intelligence. While tracking down MetsubouJinrai's hideout at Daybreak Town, it was revealed that astronaut Humagear, Uchuyaro Raiden, is a MetsubouJinrai's sleeper agent 'Ikazuchi'.
When Zero-One participated in the raid with A.I.M.S. to take down MetsubouJinrai, Is was damaged by Jin following Horobi's apparent demise. Despite the board holding a meeting to determine he is fit to remain president, Aruto pressed on to face Jin as he launched an attack to the city. Aruto takes uses the Assault Grip and empowers Shining Hopper, allowing him access to Zero-One Shining Assault Hopper. With this newfound form, Zero-One vanquishes Jin and later repairs Is. With the MetsubouJinrai threat was seemingly at a close, the board members were convinced to keep Aruto on as president of Hiden Intelligence. Meanwhile, new Magias without Zetsumerisers started to resurface and Gai Amatsu of ZAIA Enterprise Japan announces his intentions to buy out Hiden Intelligence.
===The Workplace Competition===
In order to protect his company, Aruto participated in a five-part workplace competition to pit Hiden Intelligence's Humagears and ZAIA Enterprise's ZAIA Specs to challenge their worth and functionality to the public. Zero-One would battle against new enemies called Raiders, who are humans given RaidRiser and Progrisekeys by the hooded Naki. In addition, Gai Amatsu took the opportunity to become Kamen Rider Thouser used every underhanded method to downplay the Humagears, even intentionally provoking them to incite malice.
Upon learning Gai's role in sabotaging the Ark, therefore causing the Daybreak Town Accident and MetsubouJinrai's advent, Aruto grew more frustrated with the ZAIA president. Gai took the advantage of Aruto's malice by using the MetalCluster Hopper Progrisekey to lock Aruto from transforming again. However, this backfired and allowed Aruto to access Zero-One MetalCluster Hopper instead. Having uplinked to the Ark, Zero-One had turned berserk and would attack anyone in sight. However, Is along with the Humagears that Aruto has encountered complied their data to create the Progrise Hopper Blade in order to reconnect him back to There, allowing him to control the MetalCluster Hopper state and the power to restore corrupted Humagears.
Aruto becomes more determined to fulfill his dreams to make humans and Humagears laugh and smile together, citing his reason to become "Kamen Rider Zero-One". Despite Horobi and Jin having reemerged from their apparent demises, the Workplace Competition resumes and Hiden Intelligence prevailed in the latter half of the competition. This leads to the tiebreaker final round involving a referendum campaign to determine if Humagears should be welcomed to society. Although Aruto had brought in the aid of rapper Humagear MC Che.ck-It-Out to bring the community to their favor, the corrupt politician Masamitsu Yuto tricks the public into believing Hiden Intelligence is spreading lies and provokes MC Che.ck-It-Out into becoming a Magia. 
This results in the reputation of Hiden Intelligence and Humagears falling out with the populace. Realizing that he has lost, Aruto meets with Gai to concede defeat but begged him to spare the Humagears. As Gai Amatsu and Yua Yaiba were determined to eliminate Is, Aruto rushed to defend her but was quickly aided by Fuwa, who transformed into Kamen Rider RampageVulcan and overpowered Thouser and the Fighting Jackal Raider. However, this did not fix their current predicament as Hiden Intelligence has been acquired by ZAIA Japan. This causes Aruto to voluntarily resign from the company having lost everything: his business, his Driver, and his family legacy.
===Creating HIDEN Manufacturing===
After his position as CEO of Hiden Intelligence was taken by Gai Amatsu, he was forced to relinquish his Hiden Zero-One Driver due to ZAIA Enterprise Japan being declared as the winner of the Workplace Competition. However, since the rights of the Humagear and Zero-One technology belonged to Aruto and not the company, he was reauthorized to use them when Jin helps him steal them back from Gai's office, with the reactivated Is creating a new company for him, HIDEN Manufacturing.
With his new company, Aruto focused his efforts on recovering discarded Humagears using the Humagear Progrisekeys. Unlike before, he was inspired by Jin to allow the Humagears to decide on their paths and to not always be bound of There's declaration. Aruto brought on Fuwa as a bouncer after the latter had quit A.I.M.S. and needed a bodyguard to protect the Humagears from Gai Amatsu and ZAIA. Overtime, the public would respond positively towards his efforts to restore Humagear prosperity.
When Horobi began to confront Aruto to hand over "Ikazuchi"'s Progrisekey, Aruto recalled how he was a Parent-Type Humagear like his father. While confronting Horobi on what made his renounce his parental programming, Aruto was sadden hearing Horobi declared himself as a loyal follower of the Ark. However, Jin recovers Uchuyaro Raiden's Progrisekey and Naki has brainwashed the ZAIA Spec users from going berserk. While ZAIA led an army of Battle Raiders to battle Horobi's Trilobyte Magias, Aruto protects Horobi knowing that he is still a Parent Humagear despite under Ark's influence. Aruto declares people like Gai Amatsu as the reason why Humagears will never co-exist with humanity. While this doesn't change Horobi's alligences, he remarks how Aruto could change the future of the Humagears.
===The Ark's Uprising===
MetsubouJinrai would accomplish their goal in completely reviving the Ark, having evolved into Kamen Rider Ark-Zero. While initially fearing the presence of the Ark, Aruto overcame his inner troubles and determined to take down Ark. As the threat of the Ark is reaching beyond comprehension, Zero-One begins to team up with Kamen Rider Thouser following his change of heart. Aruto and Is continued to search for ways to advance the Zero-One to combat Ark-Zero, but his adversary would manage to snatch the Hiden Zero-One Driver and uplink himself to Satellite There, becoming more invincible than ever.
After several simulations regarding Ark-Zero defeating of Aruto and his allies, he and Is managed to create the Hiden Zero-Two Driver and Zero-Two Progrisekey based on his sketches. Aruto finally transforms into Kamen Rider Zero-Two, represented by his and Is's dream to unite the humanity and Humagears together, and with the new power, he defeats Kamen Rider Ark-Zero by out-predicting his opponent's prediction ability. As a sign of good gesture, Gai Amatsu stepped down as president of Hiden Intelligence to reappoint Aruto back into the position to put Humagears back to work.
Aruto would eventually succeed in defeating Kamen Rider Ark-Zero for good with the assistance from Horobi. Unfortunately, Horobi announced his intention to destroy humanity, claiming their malice would bring destruction. While Horobi began raising an army of Humagears, Is would be destroyed by him while trying to persuade Horobi to give up his hatred. Falling into despair over the loss of his companion, Aruto was driven to become Kamen Rider Ark-One, using the Ark's malice on a single-minded pursuit on Horobi. Though he became aware that As was manipulating him, Aruto chose to keep using the Ark-Driver anyway. The Kamen Riders would make attempts to stop Aruto, believing his actions would bring a war between humanity and Humagears. As a result, Jin dies after protecting Horobi from Ark-One.
While regretful of his actions, Aruto still persisted to face Horobi. Fuwa tried to stop Aruto by transforming into Orthros Vulcan, only to be swiftly defeated by Zero-Two. Through the Zero-Two Driver, Aruto uplinked himself to There for guidance, only to encounter his father Soreo Hiden. Despite under feelings of malice, he was motivated to find the true strength in his heart. After being given a new Zero-One Driver, Aruto confronts Horobi the next morning as Ark-One to allow his opponent to defeat him. Wanting to save Horobi from his malice, Aruto transforms into as Zero-One once more and accesses the powers of Realizing Hopper to prevail in the final battle, but spares Horobi's life knowing that there's no need for anymore death. After the war between humans and Humagears was ended, Aruto had constructed a second Is and decided to train the new one with his routine gags.
===Kamen Rider Zero-One: Final Stage===
to be added
===Kamen Rider Zero-One: REAL×TIME===
Three months after the threat of the Ark had subsided, Aruto receives a message from the mysterious S, who challenges him in a battle to save the world. He goes but refuses to allow Is to accompany him. Aruto transforms into Kamen Rider Zero-Two battles S, as Kamen Rider Eden. However, he is swiftly defeated and his Zero-Two Driver is relinquished. While Aruto is thrown off the building, There uplinks him to a digital world where he meets Akane Tono. He learns of S's true origins as Rihito Isshiki and informed of his intentions to transfer humanity into the virtual paradise.
Waking up in reality, lying on a car, Raiden arrives to deliver the Rise Hopper to Aruto. He rushes to S's location and fights him as Zero-One MetalCluster Hopper, easily immobilizing Eden from regenerating with the nanomachines. However, Eden escapes using the completed Hellrise Progrisekey, before destroying the building they are in and the majority of his followers. Aruto pursued S at a chapel and tries stopping him from using Hellrise Progrisekey by transforming with it into Zero-One Hellrising Hopper. Although he overwhelmed Eden, he went on an animalistic rampage which was stopped by Is as Zero-Two. Is, who had regained her original memories, helps him regain control as Aruto realizes his eventual sacrifice would have made Is even sadder. 
Aruto later convinces S to not continue his doomsday as Akane doesn't want a world like this. However, Behru and the Thinknet members arrive to create their digital paradise without their leader. Aruto and Is transform into Kamen Riders Zero-One and Zero-Two to battle Kamen Rider Lucifer and the Abaddon Riders, while S rushes to the Thinknet servers. The pair stood victorious against the Thinknet forces. Zero-One and Zero-Two eliminate Lucifer with the Realizing Impact and Zero-Two Big Bang, ending the doomsday clock in mere seconds. With the Thinknet servers destroyed and S's and Akane's data deleted, the world is at peace. Aruto and Is leave the chapel while the former delivers another one of his jokes.
===Zero-One Others===
During the events of Zero-One Others, Aruto was in space with the Astronaut Humagears to prepare the launch of Satellite We'Re. However, he seemingly remained unaware of Lyon Arkland's plans to weaponize the Humagears as military soldiers as part of his "Sold Project". While MetsubouJinrai.net tried to thwart ZAIA Enterprise's attempts, they were fused to become Kamen Rider MetsubouJinrai and unwillingly became a new threat. With their ShotRisers being ineffective, Aruto permitted Fuwa to borrow his Zero-One Driver as a means to upgrade himself as Vulcan Lone Wolf.
===Kamen Rider Outsiders===
Aruto was approached by George Karizaki and voluntarily gave up the Zero-One powers for the creation of his Zein Card for Kamen Rider Zein. According to Horobi, Aruto was the first of many to do so.
==Other Events==
;The following events currently do not have an established place within the main continuity.
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As is being chased by a foot soldier, Aruto rescues her and responds with his signature gags, only to be dismayed after Raptor explains the joke. After transforming into Zero-One, he joins Kamen Rider Saber and the other Sentai Rangers, forming the Eight Swordsmen. While he is later erased after Shotaro Ishinomori rips up a drawing of him, Zero-One was eventually re-manifested with every Kamen Rider and Sentai Red Ranger to battle Asmodeus' forces.
During the climatic final battle itself, he can be seen fighting alongside Kamen Rider 1, Kamen Rider V3, Kamen Rider Kuuga and Kamen Rider Saber.
==Game Appearances==
==Personality==
Aruto is a cheerful individual who will go above and beyond to make those around him happy, even though he is horrible at it. He strongly believes that like humans, Humagears can indeed possess a heart and have dreams of their own, enabling them to prosper alongside humanity. To this end, Aruto became Zero-One to fight against those who he feels threatens that ideology, though this ultimately clouds his judgement of them, especially with ones he had previously developed a strong bond with and prioritized their safety and dignity over profits of the business world. This would eventually lead to his loss in the Workplace Competition against Gai Amatsu, a certified expert in the field. 
After becoming Ark-One, Aruto willingly discarded much of his comedic and lighthearted traits, now becoming cold, serious, and vengeful towards Horobi specifically; despite having previously sympathized with the Humagear's unwilling affiliation with the Ark, Aruto now seeks revenge on him for Is's death, as she was his only family after the deaths of his biological kin. While Aruto tries to avoid bringing harm to his former allies, he does not hesitate to fight them if they interfered with his desire for vengeance against Horobi, though he manages maintain enough of his composure to not kill them on the spot. Despite his fall from grace, Aruto is completely aware of his actions and thus grieves with the consequences of what he has become. After briefly seeking advice from his father, Aruto's final clash with Horobi served to teach the latter the meaning of the human heart.
Aruto is known for his good nature and polite manners, as evident towards his usage of the honorific "-san" when speaking with Isamu and Yua. However, his lack of its use towards Gai indicates his total loss of respect for such.
Aruto has also given playful nicknames to his Progrisekeys, calling Flaming Tiger , Flying Falcon and Biting Shark .
Aruto's catchphrase during battle is .
==Aruto's Gags==
Throughout the series, Aruto's comedy is heavily reliant on quick wordplay gags, but considered rather half-baked compared to those of professional comedians who use longer jokes or props. Most of not all of his gags end with his signature catchphrase, 
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==Powers and Abilities==
===Powers===
*There Satellite Connection: With either the Zero-One or Zero-Two Driver equipped, Aruto's mind is uplinked into Satellite There, which grants him a number of abilities. 
**Enhanced Thought Processes: By linking up to There, it exponentially enhances his thought synapses allowing him to learn and analyze fighting techniques at speeds faster than an A.I. supercomputer. 
**Satellite Communication: By connecting several entities to There, Aruto is able to communicate with them at any given point they wish.
**Temporal Protection: Due to being linked to There, Aruto can recognize and be immune to any temporal changes in the timeline, as he was able to discern a temporal difference that occurred 12 years ago. Aruto was also able to retain his memories of the alternate timeline even after his duel with Zi-O. 
**Virtual Reality Travel: Aruto is capable of connecting to foreign virtual spaces, particularly Thinknet and speak with Akane Tono.
===Abilities===
*Skilled Combatant: Despite his lack of combat experience prior to becoming Zero-One, Aruto's combat skills had improved so much that Satellite There was unable to keep up, thus it originally deemed Shining Hopper unsuitable for him. Aruto would later go toe-to-toe against Thouser and several Battle Raiders simultaneously in his default Rising Hopper form. Aruto further demonstrates this when he fights Kamen Rider Ark-Zero on near even terms, despite being statistically weaker than him. 
*Business Acumen: Aruto initially lacked prior business experience and deemed incapable of carrying out the duties of a company president. He was challenged in the Workplace Competition by Gai Amatsu, who expertly demonstrated the traits required to succeed in the business world by reaching particular goals (e.g. producing quality products, achieving profit margins, securing the support and confidence of customers). However, when he gained more business expertise, he was able to effectively run HIDEN Manufacturing with the aid of Is by concentrating his efforts on recovering abandoned Humagears.
*Above Average Physical Strength: Though rarely demonstrated, Aruto has shown to perform extraordinary feats of resilience and strength when in critical situation, like withstanding a blow from the Attache Calibur to his shoulder untransformed and later throwing the same weapon with enough speed and precision to stop a blast from Behru as Kamen Rider Lucifer from killing Rihito Isshiki a short distance away. Moreover, he is able to hold back Isamu Fuwa, who has extraordinary physical strength, and a transformed Horobi before transforming himself.
===Weaknesses===
*Zero-One Driver Authorization: There is authorized to grant full usage of the Zero-One Driver specifically to Aruto alone, but he must be a currently active CEO for the recognition to take effect, otherwise Aruto cannot transform.
===Former Weaknesses===
*Ark Influence: As Ark-One, Aruto has fully committed to serving the Ark on a mental standpoint, which came about after the death of Is. The malicious aura that comes with the power constantly keeps him in pain, which is reflected by his grievances and cries; and can even be forced out of his transformation should he use too much power. This indirectly also caused Zero-Two to gain a tiny fraction of its malicious power. After the final battle with Horobi, the Ark-One powers were destroyed, returning Aruto back to normal.
==Kamen Rider Zero-One==
==Equipment==
===Devices===
*Hiden Zero-One Driver - Transformation device for Zero-One
*Forceriser - Transformation device for ZeroZero-One
*Hiden Zero-Two Driver - Transformation device for Zero-Two
*Ark Driver-One - Transformation device for Ark-One
*Progrisekeys - Transformation trinkets
*Assault Grip - Used to access Shining Assault Hopper
*Hiden Risephone - Zero-One's personal smartphone and method of summoning the Rise Hopper
*Progrise Holder - Carrying straps for Progrisekeys
===Weapons===
*Attache Calibur
*Attache Arrow
*Authorise Buster - Shining Hopper/Shining Assault Hopper's personal weapon
*Progrise Hopper Blade - MetalCluster Hopper's personal weapon
Suit-Equipped Weapons
*Unlimited Chopper - Biting Shark's arm blades
*Panthera Burner - Flaming Tiger's palm-mounted flamethrowers
*Polar Freezer - Freezing Bear's coolant-producing gauntlets
===Vehicles===
*Rise Hopper - Zero-One's personal Rider Machine that is transformed from a giant Hiden Risephone.
==Legend Rider Devices==
==Relationships==
==Behind the Scenes==
===Portrayal===
Aruto Hiden is portrayed by . His suit actor is . Nawata was previously the suit actor for Kamen Rider Genm, Kamen Rider Cronus (Taiga Hanaya), and Kamen Rider Geiz.
===Rider No.===
As the leading rider protagonist of Kamen Rider Zero-One, Zero-One is labeled and .
===Etymology===
*Aruto's given name directly translates to , intended to represent his everyman nature.Super Complete Works 2020, pp. 146–147, "Zero-One Memorial Roundtable"Figure King 276 2021, pp. 60–61
*His surname "Hiden" is derived from the four-character idiom, Spacecraft 167 2019, pp. 42–43, "[Interview] Yuya Takahashi" It could also translate into "Hopping Electronics", refering to both Zero-One's grasshopper motif and Hiden Intelligence's field of research : robotics.
*With "zero" in Japanese and "one" in Japanized-English, Zero-One can be read as in Japanese, referencing the fact that he is the first Kamen Rider of the Reiwa era. 
**Additionally, 0 and 1 are the characters most commonly used in binary code; the base language that computers run on. This lines up with AI being a major part of the series.
==Notes==
==Appearances==
==External links==
*Kamen Rider Zukan page on Aruto Hiden.
==Navigation==
hi:अरूटो हीडेन
ru:Аруто Хиден
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