History Characters / KamenRiderZeroOneHidenIntelligence

[[folder:Is]]
!!Is/[[spoiler:Kamen Rider Zero-Two (II)]]
!!!'''Portrayed by:''' Noa Tsurushima (live), [[spoiler:Satoshi Fujita (suit)]]
[[quoteright:275:https://static.tvtropes.org/pmwiki/pub/images/izu.png]]
[[caption-width-right:275:''I'm President Aruto's secretary.'']]
[[caption-width-right:275:[[labelnote:Click here to see Is in ''Reiwa Generation''.]] https://static.tvtropes.org/pmwiki/pub/images/izu_rtfg.png]][[/labelnote]]

By #30, [[spoiler:Is left Hiden Intelligence, and assumed the role of Aruto's assistant in his new position as president of HIDEN Manufacturing.]] [[spoiler:She was later killed by Horobi in #42; in the finale, Aruto builds a new Is model, with none of her memories from the series due to the security protocols related to the Zero-One Project. However, the original Is is revived when she is restored into the body of the new Is in ''[=REALxTIME=]'' using the Zero-Two Progrise Key, and becomes Kamen Rider Zero-Two to assist Aruto.]]
----
* AscendedToAHigherPlaneOfExistence: According to ''[=REAL×TIME=]'', [[spoiler:Zea had been observing Is long enough to back up her data in its memory when the second Is accesses Zea through the Zero-Two Driver and Progrisekey. The second Is joining with this virtual copy effectively brings the original Is back to life.]]

* BackFromTheDead: [[spoiler:A sad variant. The original Is is truly gone for good once the series ends, but Aruto creates a [=HumaGear=] with her exact physical appearance. While she's not truly Is as he knew her, Aruto takes it in stride, reteaching all the things he wants her to know. This is played straight in ''[=REAL×TIME=]'' when the second Is gets the chance to recover the memories of her predecessor from Zea via the Zero-Two Driver and Progrrisekey, leading to the original Is getting transplanted onto the new Is.]]

* ContrastingSequelMainCharacter: Both Is and [[Series/KamenRiderZiO Tsukuyomi]] are close friends to their series' main protagonists, but their paths diverge in a few ways. Is automatically became Aruto's assistant after he was appointed as a CEO of Hiden, while Tsukuyomi chose to befriend Sougo in order to prevent him from becoming Ohma Zi-O. Is is a [=HumaGear=] created by Hiden Intelligence, giving her a lot of knowledge but no real emotions, while Tsukuyomi is a resistance fighter [[spoiler:and originally a princess willing to destroy time, until she lost her memories]] with a full range of emotional expression. [[spoiler:They also both died near the end of their respective series, were revived in the finale epilogue with no memories of past events, and transformed into Kamen Riders at some point, but at different times and in different ways: Is became the already existing Kamen Rider Zero-Two by borrowing the Driver from Aruto in the post-series movie ''[=REAL×TIME=]'', while Tsukuyomi became the original rider Kamen Rider Tsukuyomi in the last episodes of her series.]]

* {{Foil}}: [[spoiler:Becomes one to Ark-Zero once she reawakens Zea within her. Like Ark-Zero, she's now capable of 3D printing and fabrication on her own, and shares Ark-Zero's immense processing and calculation abilities, but unlike Ark-Zero, she's a non-combatant that believes in the potential of humans and AI working together, while Ark-Zero is a MisanthropeSupreme that wants to KillAllHumans and is more than willing to do so personally. During the ''[=REAL×TIME=]'' movie, this even extends to becoming a Rider like Ark-Zero did, but acting as Aruto's ally instead of his enemy, and utilizing the Zero-Two Progrisekey formed from the original Is' bond with Aruto as opposed to the Ark's hatred of humanity.]]
* GrewBeyondTheirProgramming: Is gradually reaches Singularity over the course of the series, at first in minor ways like exploiting LoopholeAbuse against an exploitative customer but gradually evolving into taking on projects of her own free will (such investigating Yua's suspicious activity on her own initiative, saving Aruto from [=MetalCluster Hopper=]), pondering the nature of Singularity itself when asked, and acknowleging the concept of family thanks to Aruto [[spoiler:as well as Was's sacrifice for her sake]]. As the series progresses, she also comes to express hope and sadness, and displays attachment to others (especially Aruto). This also means she can be misled by her emotions, though: [[spoiler:when she first gains Zea's simulation abilities, she winds up trapped in a loop where Aruto dies over and over again and nearly breaks from the trauma, then lies to Aruto when Horobi communicates to her and other [=HumaGears=] in order to keep him safe, and is manipulated by As into taking direct action against Horobi that leads to her death.]]
* HeroicSuicide: [[spoiler:She attempted to do this by giving Aruto's Shining Hopper Progrise Key all the battle data she's collected for Zero-One, boosting its strength for him to defeat the Dodo Magia in exchange for permanently shutting herself down. However, Was forcibly takes her place.]]
* HesBack: In ''[=REAL×TIME=]'', [[spoiler:the second Is regains the memories of her previous self after coming into possession of the Zero-Two Driver and the Zero-Two Progrisekey and connecting with Satellite Zea, doing a FusionDance with an archived version of herself stored within Zea and restoring the original Is.]]

* KilledOffForReal: [[spoiler:Her body self-destructs in #42 after she's shot by Horobi. Shesta confirms this in #43 when Yaiba and Fuwa ask if she can be rebuilt, stating that there are no backups of her available. The new Is seen in the finale has her appearance, but none of her memories. Fully subverted in the climax of ''REAL×TIME'', where the original Is is restored to the body of the new Is through her backup in the Zero-Two Progrise Key.]]
* KirkSummation: She tries one on Horobi in #42 to try and talk him out of his crusade against humanity. [[spoiler:Unfortunately, it doesn't work, and she dies as a result.]]
* MultiTrackDrifting: A RunningGag is Is accomplishing this ''without a vehicle'', making high-speed drifts across the ground when delivering new gear and Progrisekeys to Aruto. [[spoiler:Once she becomes Zero-Two, this even becomes [[SlideAttack her finishing move]].]]
* NoPlansNoPrototypeNoBackup: Because of the data she has about the Zero-One Project, there are no backups of Is's central memory, unlike many other [=HumaGears=]--and there ''never'' will be, even with her [=HumaGear=] Progrisekey, in order to avoid a potential security leak. If she's ever irreversibly hacked or completely destroyed, [[DeaderThanDead there's no bringing her back.]] [[spoiler:This is proven when it's shown that the new Is introduced in the finale does not have her personality from before her death, reverting all of her character development. It's later heavily implied that this was {{Subverted}} almost entirely ''by accident'': REAL×TIME shows that Zea did have a backup of the original Is' data, implicitly because the Zero-Two Progrisekey was created from Is' central memory, allowing the original Is to be restored.]]
* OutOfCharacterAlert: Subverted in the President Specials - [[spoiler:long-haired Is]]' completely different behavior and inability to remember much of the plot thus far has yet to raise any red flags with Aruto. [[spoiler:And then comes the revelation that the long-haired Is was actually As, the Ark's recreation of her.]]
* ReplacementGoldfish: [[spoiler:The Is we see in the finale of the show is this to the original Is, as they share a physical appearance but no memories. Aruto takes it upon himself to re-teach her everything that her predecessor knew. Subverted in ''[=REALxTIME=]'' when Is the Zero-Two Progrisekey and the original Is's backup is restored onto the new Is.]]
* RippleEffectProofMemory: In ''Kamen Ride Reiwa: The Next Generation'', she was already aware of the changes to the timeline when Aruto finds her again, [[spoiler:and it's heavily implied at the end that she remembers the altered timeline that was otherwise erased with Finis' death.]]

* SpontaneousWeaponCreation: [[spoiler:After Zea is awakened in her, there's an implication that she can do this just like Ark-Zero can, as she creates both the Zero-Two Progrisekey and the Zero-Two Driver much like how Ark-Zero fabricates its own weapons.]]

* TookALevelInBadass: In the ''[=REAL×TIME=]'' film, [[spoiler:Is goes from being a non-combatant that acts as support for Aruto to fighting side-by-side with him, even becoming [[UpToEleven Kamen Rider Zero-Two]].]]
* TragicKeepsake: [[spoiler:She's carrying Was's watch with her after his death]], [[spoiler:and her own bow briefly becomes one for Aruto once Horobi kills her in #42.]]

** Because she chose MC Che.ck-It-Out to represent Hiden for the final round of the Workplace Competition, [[spoiler:Hiden Intelligence loses, costing Aruto his position as president and turning the company over to ZAIA Enterprise.]]
** [[spoiler:She chooses not to move out of the way of Horobi's final attack, firmly committing to talking him down by any means necessary. This results not only in her death but Aruto's transformation into Kamen Rider Ark-One.]]

!!Is/[[spoiler:Kamen Rider Zero-Two]]

* GrewBeyondTheirProgramming: Is gradually reaches Singularity over the course of the series, at first in minor ways like exploiting LoopholeAbuse against an exploitative customer but gradually evolving into taking on projects of her own free will (such investigating Yua's suspicious activity on her own initiative, saving Aruto from [=MetalCluster Hopper=]), pondering the nature of Singularity itself when asked, and acknowleging the concept of family thanks to Aruto [[spoiler:as well as Wazu's sacrifice for her sake]]. As the series progresses, she also comes to express hope and sadness, and displays attachment to others (especially Aruto). This also means she can be misled by her emotions, though: [[spoiler:when she first gains Zea's simulation abilities, she winds up trapped in a loop where Aruto dies over and over again and nearly breaks from the trauma, then lies to Aruto when Horobi communicates to her and other [=HumaGears=] in order to keep him safe, and is manipulated by As into taking direct action against Horobi that leads to her death.]]
* HeroicSuicide: [[spoiler:She attempted to do this by giving Aruto's Shining Hopper Progrise Key all the battle data she's collected for Zero-One, boosting its strength for him to defeat the Dodo Magia in exchange for permanently shutting herself down. However, Wazu forcibly takes her place.]]

* TragicKeepsake: [[spoiler:She's carrying Wazu's watch with her after his death]], [[spoiler:and her own bow briefly becomes one for Aruto once Horobi kills her in #42.]]

** The [=HumaGears=] with direct relations to Korenosuke Hiden[[note]]Wazu, Is and Will[[/note]] are all named after verb tenses.

* DeaderThanDead: [[spoiler:While other [=HumaGears=] can have replacements made and even those who legally can't be replaced like Seine have alternatives, Wazu's involvement in the Zero-One Project means he can ''never'' come back from his shutdown, because there are no backups of any of his data.]]

* GrewBeyondTheirProgramming: [[spoiler:As confirmed by Korenosuke in a flashback,]] Wazu has awakened to his Singularity, having gained self-awareness and producing a very humanlike eccentric personality as a result.

** Being Is's prototype model, Wazu is the "was" to Is's "is".
* NiceGuy: Wazu is actually a pretty friendly fellow, willing to help Aruto prove his innocence and trying his best to be a big brother for Is.

[[folder:Wazu Nazotoku]]
!!Wazu Nazotoku

A tech company responsible for the creation of the [=HumaGears=], as well as the Zero-One Driver. After the end of the Workplace Competition arc, it's replaced as the main company of the series by Aruto's own company, the much smaller Hiden Manufacturing. [[spoiler:When Hiden Manufacturing is destroyed in Episode 40, Hiden Intelligence takes the main stage once again as the focus company.]]

By Episode 30, [[spoiler:Is left Hiden Intelligence, and assumed the role of Aruto's assistant in his new position as president of HIDEN Manufacturing.]] [[spoiler:She is killed by Horobi in Episode 42; in the finale, Aruto builds a new Is model, with none of her memories from the series due to the security protocols related to the Zero-One Project. However, the original Is is revived when she is restored into the body of the new Is in ''[=REALxTIME=]'' using the Zero-Two Progrise Key, and becomes Kamen Rider Zero-Two to assist Aruto.]]

* HeroicSuicide: [[spoiler:She attempts to do this by giving Aruto's Shining Hopper Progrise Key all the battle data she's collected for Zero-One, boosting its strength for him to defeat the Dodo Magia in exchange for permanently shutting herself down. However, Wazu forcibly takes her place.]]

* KilledOffForReal: [[spoiler:Her body self-destructs in Episode 42 after she's shot by Horobi. Shesta confirms this in episode 43 when Yaiba and Fuwa ask if she can be rebuilt, stating that there are no backups of her available. The new Is seen in the finale has her appearance, but none of her memories. Fully subverted in the climax of ''REAL×TIME'', where the original Is is restored to the body of the new Is through her backup in the Zero-Two Progrise Key.]]
* KirkSummation: She tries one on Horobi in episode 42 to try and talk him out of his crusade against humanity. [[spoiler:Unfortunately, it doesn't work, and she dies as a result.]]

* SuperPoweredRobotMeterMaid: Albeit in a downplayed manner that is logical within the story. Is is a secretary robot to a superhero, and while she remains a non-combatant she still tosses Aruto his briefcase sword or Progrise Keys from the sidelines. Episode 3 confirms she's strong enough to evacuate a grown man on piggyback, at a brisk run - without the added weight she can reach the speed of a motorcycle! As seen in episode 24, she's even capable of leaping into the air almost like Zero-One!

* TragicKeepsake: [[spoiler:She's carrying Wazu's watch with her after his death]], [[spoiler:and her own bow briefly becomes one for Aruto once Horobi kills her in Episode 42.]]

** Because she chose MC Check It Out to represent Hiden for the final round of the Workplace Competition, [[spoiler:Hiden Intelligence loses, costing Aruto his position as president and turning the company over to ZAIA Enterprise.]]

* CharacterDevelopment: It's subtle, but Jun has changed since the show began. Originally, he was a GreenEyedMonster who coveted the position of President and disliked Aruto both because he knew nothing about the inner workings of the business world and [[{{Nepotism}} how he became President.]] His stance has lessened since the end of the [=MetsubouJinrai.NET=] Arc, agreeing with Sanzo that while Aruto is not fit to be a businessman, he did work to save the company by becoming Zero-One. [[spoiler:When Hiden Intelligence loses the Workplace Competition and Hiden is bought by ZAIA, he decides to stay at the company and preserve his position as Vice-President in spite of his dislike towards Gai.]] By that point, he seems to be less concerned about becoming president and more focused towards doing his best to contribute to his company. It's to the point where he actually goes to Aruto for help in taking Gai down and actually encourages Aruto to face Ark Zero because of his beliefs in AI.

** While still trying to gun for Aruto's seat as President of Hiden Intelligence, he admits in Episode 16, albeit reluctantly, that he knows to give the young President credit for his actions as Zero-One where credit is due.
** His heart of gold really shines in Episode 27 where he shows concern for Sanzo and Shesta's safety, desperately trying to keep them awake before being rescued.
** Even despite his distaste for him, he actually shows genuine concern for Aruto in episode 29 when the latter decides to leave Hiden Intelligence for good, questioning Aruto on what will he do next.

** After Is is damaged in battle in Episode 15, Jun tells Aruto that had ''he'' been promoted to President instead of Aruto, none of the show's events would have happened. Afterwards, he goes off to schedule a board meeting to request Aruto's removal as President.

* PutOnABus: After Gai's takeover of Hiden Intelligence, Shesta is reduced to her [=HumaGear=] Progrise Key, with her original body presumably decommissioned. When given the opportunity to return to action through a blank [=HumaGear=], Shesta refuses, citing that she's not a President's secretary. [[TheBusCameBack She later comes back in episode 37 at Jun and Sanzo's request to help them get evidence to fire Gai as president.]]

* EveryoneHasStandards: A bit more level-headed than Jun, and just as disgusted with Gai's mad schemes. He's also the one who saved one last Humagear in episode 37.

* SatelliteCharacter: Where Jun goes, he follows. Episode 5 is the first time we see him by himself. He does have a positive belief in [=HumaGears=] as seen in Episode 27, where he believes that 119 Nosuke will save him and everyone in the burning building.

* GrewBeyondTheirProgramming: Heavily implied to have also reached Singularity at some point, which not only gives it the capacity to perform the LoopholeAbuse below, but also [[spoiler:[[EveryoneHasStandards outright reject]] Gai's demands to start [[WarForFunAndProfit mass-producing [=RaidRisers=]]]. Based on what Aruto said in Episode 40, this may have been because of how it responded to Is' memories and emotions; as she grew into her Singularity, Zea may have learned from her.]]

** As with the English grammatical ThemeNaming of the [=HumaGears=] close to Korenosuke Hiden, Zea is named based on the word "There" pronounced in Japanese. This is especially evident in episode 39, where a rocket bearing its name calls it "Satellite There".

** [[spoiler: It's succeeded in ''Zero One Others'' by a global satellite network aptly named We're.[[note]]Yes, that includes the apostrophe.[[/note]]]]

* LimitedWardrobe: Many [=HumaGears=] seem to wear uniforms and costumes all the time, according to their programmed profession, like Is. There are exceptions who wear casual clothing like Choichiro's assistants and the filming staff, and Seine was at least shown with another set of dress on her audition. Is finally breaks the trope in Episode 32 with the help of a fashion model [=HumaGear=], who obviously does not follow this trope.

* GrewBeyondTheirProgramming: In Episode 15, after Is and Aruto both try to help him understand what a family is and why it's important, he briefly expresses genuine grief [[spoiler:over Raiden's death.]] The blue eye flash he has during this moment implies that he's reached Singularity, much like Is.
* RobotBuddy: Takes this role in a reduced capacity from Is for Episode 15, during which she's unavailable.

* SuperPrototype: [[DownplayedTrope Downplayed.]] He doesn't have ''technical'' superiority over production model [=HumaGears=], especially given his much more primitive design. What he ''did'' have was seemingly fully realized sentience. On the other hand, [[spoiler:his personal transformation belt, the Cycloneriser, is a straighter example as it is the prototype for what would eventually become the Hiden Zero-One Driver. However, this is PlayedStraight when Episode 34 reveals, after looking through Raiden's data for any information on Horobi's background, that his data was used as a base for Horobi before he was hacked by the Ark, making him this to Horobi and that specific category of Humagear.]]

* TheConfidant: Why Aruto built them in the first place, essentially being somebody someone can vent, discuss, and work out their personal issues privately, their non-humanoid shape also allowing others to open up to them more easily. Notably, it ends up being great help to Fuwa, Yua, [[spoiler:Gai, and even [[TheLastOfTheseIsNotLikeTheOthers Jun Fukuzoe]].]]

[[folder:Isamu Fuwa/Kamen Rider Vulcan]]

[[folder:Jun Fukuzoe]]
!!Jun Fukuzoe
!!!'''Portrayed by:''' Kazuya Kojima
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/jun_0.png]]
[[caption-width-right:250:''The world's top number two, is me.'']]
[[caption-width-right:250:[[labelnote:Click here to see Fukuzoe in ''Reiwa Generation''.]] https://static.tvtropes.org/pmwiki/pub/images/jun_rtfg.png]][[/labelnote]]
As the Vice-President of Hiden Intelligence, Fukuzoe was expected to take the President's chair after his passing, only to be passed over for Aruto. Now bitter and resentful, he schemes to have Aruto ousted from the company.

[[folder:Sanzo Yamashita]]
!!Sanzo Yamashita
!!!'''Portrayed by:''' Arata Saeki
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/sanzo.png]]
[[caption-width-right:250:[[labelnote:Click here to see Yamashita in ''Reiwa Generation''..]] https://static.tvtropes.org/pmwiki/pub/images/sanzo_rtfg.png]][[/labelnote]]
A member of Hiden Intelligence's Board of Directors and Jun Fukuzoe's sycophantic subordinate, always enabling his schemes without question.

* EveryoneHasStandards: A bit more level-headed than Jun, and just as disgusted with Gai's mad schemes. He's also the one who saved one last Humagear in episode 37.
* EvilLaugh: Like Jun, more "scheming" than evil. He usually joins in on the Vice-President's because he's a suck up.
* HeelRealization: He actually congratulates Aruto for helping save the company against the villains and even gives him a round of applause.
* LoyalToThePosition: [[spoiler:Along with Jun, Sanzo must also appeal to Gai's pleasure even though he agrees with Jun that Gai is despicable.]]
* PleaseDontLeaveMe: Or more accurately, "Please don't leave the company." Following the conclusion of the Workplace Competition, [[spoiler:Sanzo begs Aruto to reconsider leaving Hiden Intelligence, pointing out that while executive members do resign from the company, it is only by their choice and can optionally work in a lower-ranking position. While touched, Aruto ultimately leaves the company.]]
* SatelliteCharacter: Where Jun goes, he follows. Episode 5 is the first time we see him by himself. He does have a positive belief in [=HumaGears=] as seen in Episode 27, where he believes that 119 Nosuke will save him and everyone in the burning building.
* YesMan: Jun's. He's ''constantly'' sucking up to the Vice-President's schemes. Subverted satisfyingly when not even he votes yes in Jun's attempt to oust Aruto as President. And subverted again with Gai--he's as disgusted as Jun when he learns of Gai's new scheme to boost Raidriser sales.

[[folder:Korenosuke Hiden]]
!!Korenosuke Hiden
!!!'''Portrayed by:''' Tokuma Nishioka
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/hiden_korenosuke_6.jpg]]
[[caption-width-right:250:''Let's make a giant leap towards our dreams.'']]
Aruto's late grandfather and the founder of Hiden Intelligence, who designed the [=HumaGears=] to advance mankind into a new era of prosperity.

* CrazyPrepared: According to his will, he knew the RobotWar was about to happen soon, so Satellite Zea was already programmed to fabricate the Zero-One Driver and give Is her orders. This implies he deliberately chose Aruto as the person to become 'Zero-One specifically' and not just the heir to the company. Many of Aruto's advantages come from Korenosuke anticipating his situation and preparing an appropriate response, but eventually this supply of preparations runs dry, forcing Aruto to stop relying on his grandfather's help right when he needs it most.
* ExactWords: In his will, he states that only the company president may be allowed to use the Zero-One Driver. [[spoiler:He never said it had to be the President of ''Hiden Intelligence.'' Is takes full advantage of this loophole since Korenosuke patented all technology relating to Zero-One and [=HumaGear=] under the Hiden family name and has Zea register them under Aruto's new company, HIDEN Manufacturing. In turn, Aruto is allowed to continue using the Zero-One Driver as the President of his own company.]]
* GreaterScopeParagon: He believed that androids are not meant to steal human jobs or shoulder all human labor, but are meant to aid humans as equal partners in the pursuit of their passions.
* HiddenDepths: [[https://www.kamen-rider-official.com/y67p4eyms953s9y/wp_base_rider01.jpg As seen here in the Hiden Intelligence room]], Korenosuke seemed to have a taste for antique items such as small statues, sculptures, books, and toys from the past. The toys that particularly stand out in his room are colorful robot toys, most likely representing his love for robots and [=HumaGears=].
* HonestCorporateExecutive: From what little we've seen, he seems to be someone genuinely committed to advancing humanity's progress by advocating partnerships with [=HumaGears=]. In the altered timeline when [[spoiler:Will becomes Another Zero-One and goes to kill Korenosuke, his last words was to tell Jun and Sanzo to escape because the ''employees'' are the company and that he counts on them making their dream come true.]]
* PlotTriggeringDeath: Korenosuke dies at some unspecified but relatively short time before the story begins; his will naming his grandson Aruto as the new CEO of Hiden Intelligence is what starts Aruto's journey. News of his death also became the driving factor for Horobi to initiate [=MetsubouJinrai.NET=]'s Project Magia [[spoiler:through Naki by Gai Amatsu]], the very event Korenosuke feared would happen.
* PosthumousCharacter: Korenosuke is stated to have passed away shortly before the series begins.

!!Isamu Fuwa/Kamen Rider Vulcan
!!!'''Portrayed by:''' Ryutaro Okada (live), Kosuke Asai (suit)
After leaving his post with A.I.M.S. Fuwa has been hired on by Aruto to act as a security guard for Hiden Manufacturing.

For his character tropes, see the [[Characters/KamenRiderZeroOneAIMS A.I.M.S.]] section.

[[folder:Other Personnel]]
!!Satoshi Sakurai
!!!'''Portrayed by:''' Hideto Suzuki
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/satoshi_sakurai.png]]
[[caption-width-right:250:''As the head of this factory, I'll make sure all [=HumaGears=] here are eliminated!'']]
The late chief of production at Hiden Intelligence's [=HumaGear=] Factory 1. He was blamed for the town's destruction, but his son Go, bullied for his father's supposed role in the incident, looks for the truth.

* {{Foreshadowing}}: If he stopped the rampaging [=HumaGears=] by sealing off the factory, [[spoiler:then Isamu's memories of being chased by them obviously can't be real]].
* HeroicSacrifice: As revealed in the lost surveillance footage, he had Factory 1 self-destruct to destroy the rampaging [=HumaGears=] within, even if he had to go with them.
* PosthumousCharacter: Died during the Daybreak Town Incident 12 years before the story.
* VindicatedByHistory: In-universe, after video footage of his sacrifice was found and made public, he is now regarded as a hero for what he really did.

[[folder:Products]]
!![=HumaGear=] Progrise Keys
[[quoteright:340:https://static.tvtropes.org/pmwiki/pub/images/humagear_progrise_key.png]]
[[caption-width-right:340:[=HumaGear=] Progrisekey creation]]

The personal Progrise Keys of the [=HumaGears=] that Aruto has directly assisted over the course of the show, initially created to help empower the Progrise Hopper Blade. After Gai had ordered all [=HumaGear=] activity to shut down, the Progrise Keys remain in the care of Aruto while he works on bringing back the deactivated [=HumaGears=].
----
* BrainUploading: Of a sort--a [=HumaGear=] Progrisekey carries the personality, memories, and occupational data of the [=HumaGear=] that the Key was made for.
* PocketProtector: The Keys themselves appear to be incredibly durable: Security Guard Mamoru's Progrise Key actually saved an untransformed Aruto from getting shot by a bullet.
* SoulJar: They act as this for [=HumaGears=] as a whole after the Workplace Competition arc. Aruto can not only reactivate any decommissioned Humagear by scanning their respective Progrise Key on their earpiece, but also recreate any [=HumaGear=] by scanning its Progrise Key on a blank [=HumaGear=]'s earpiece. [[spoiler:The final episode reveals that Is' Progrise Key doesn't possess the latter ability, necessitating that she be rebuilt and relearn everything manually.]]
* {{Twinmaker}}: It turns out that using a [=HumaGear=] Progrise Key with the [=ShotRiser=] doesn't transform the user, but it can create a clone [=HumaGear=] from an blank [=HumaGear=] body as seen in the [=YouTube=] Special, ''A Miraculous Rematch!? Aruto VS Fukkinhoukai Taro: Fateful Gag Battle!''

!!Ai-chan
!!!'''Portrayed by:''' [[Creator/MaoIchimichi M • A • O]] (voice)
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/ai_chan.jpg]]
[[caption-width-right:350:''My name is Ai-chan. Good morning!'']]
A special AI "friend" created by Bot Hakase and conceptualized by Aruto Hiden as ''Hiden Manufacturing'''s first original product, initially produced to serve as a companion/confidante to Isamu Fuwa.
----
* TheConfidant: Why Aruto built them in the first place, essentially being somebody someone can vent, discuss, and work out their personal issues privately, their non-humanoid shape also allowing others to open up to them more easily. Notably, it ends up being great help to Fuwa, Yua, [[spoiler:Gai, and even [[TheLastOfTheseIsNotLikeTheOthers Jun Fukuzoe]].]]
* NiceGirl: She's a friendly AI who helped Fuwa and Yua overcome their personal issues.
* RobotBuddy: To Fuwa and Yua.
* SuperPoweredRobotMeterMaid: For some reason Ai-chan has the same wireless uplink to Hiden Intelligence that Is has, and can even use recent tech to create an updated Dog Gear, which shouldn't even exist since the original has been phased out long ago.

!!Dog Gear
!!!'''Portrayed by:''' [[https://en.wikipedia.org/wiki/AIBO AIBO]] ERS-111 model (original), ERS-1000 model (current)
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/thouser_doggo.jpg]]

A series of robot dogs created by Hiden Intelligence before [=HumaGears=]. [[spoiler:Gai Amatsu owned one aptly named "Thouser" during his childhood until he was forced by his father to return it to Hiden for perceived academic failure.]]
----
* MoralityPet: [[spoiler:To Gai.]]
* MesACrowd: [[spoiler:In the final episode, it's revealed Gai has since bought four more Dog Gears to go with Thouser in his new Thouser Department room.]]
* RobotDog: They are designed by Hiden as such.
* RobotBuddy: One such dog became a robot friend of [[spoiler:Gai during his childhood.]]
* SuperSpeed: [[spoiler:When Gai recieves a new model, it demonstrates the ability to move fast enough to keep up with a Kamen Rider.]]

[[/folder]]

[[folder:Is]]
!!Is/[[spoiler:Kamen Rider Zero-Two]]
!!!'''Portrayed by:''' Noa Tsurushima (live), [[spoiler:Satoshi Fujita (suit)]]
[[quoteright:275:https://static.tvtropes.org/pmwiki/pub/images/izu.png]]
[[caption-width-right:275:''I'm President Aruto's secretary.'']]
[[caption-width-right:275:[[labelnote:Click here to see Is in ''Reiwa Generation''.]] https://static.tvtropes.org/pmwiki/pub/images/izu_rtfg.png]][[/labelnote]]
A Secretary-Type AI assistant [=HumaGear=] designed to serve the President of Hiden Intelligence.

By Episode 30, [[spoiler:Is left Hiden Intelligence, and assumed the role of Aruto's assistant in his new position as president of HIDEN Manufacturing.]] [[spoiler:She is killed by Horobi in Episode 42; in the finale, Aruto builds a new Is model, with none of her memories from the series due to the security protocols related to the Zero-One Project. However, the original Is is revived when she is restored into the body of the new Is in ''[=REALxTIME=]'' using the Zero-Two Progrise Key, and becomes Kamen Rider Zero-Two to assist Aruto.]]

* AscendedToAHigherPlaneOfExistence: According to ''[=REAL×TIME=]'', [[spoiler:Zea had been observing Is long enough to back up her data in its memory when the second Is accesses Zea through the Zero-Two Driver and Progrisekey. The second Is joining with this virtual copy effectively brings the original Is back to life.]]
* AwesomenessByAnalysis: [[spoiler:Integrating Zea's data]] gives Is the ability to experience simulations so advanced that they border on clairvoyant and are nigh-indistinguishable from reality. [[BlessedWithSuck This is]] '''[[BlessedWithSuck not]]''' [[BlessedWithSuck as great as it might first sound.]]
* BackFromTheDead: [[spoiler:A sad variant. The original Is is truly gone for good once the series ends, but Aruto creates a [=HumaGear=] with her exact physical appearance. While she's not truly Is as he knew her, Aruto takes it in stride, reteaching all the things he wants her to know. This is played straight in ''[=REAL×TIME=]'' when the second Is gets the chance to recover the memories of her predecessor from Zea via the Zero-Two Driver and Progrrisekey, leading to the original Is getting transplanted onto the new Is.]]
* BorrowedCatchphrase: When she's not explaining Aruto's jokes, she also seems to be stealing his catchphrase. As a [=HumaGear=], she learns from those around her, and she's mostly around Aruto.
* BokeAndTsukkomiRoutine: As much as Aruto would like to be known for his standup comedy act, he’s much funnier when he’s reacting to Is explaining his jokes. Ironically, Is is the boke in this dynamic.
* TheCallKnowsWhereYouLive: She tracked down Aruto, who had been recently fired at his job, and informs him that he is the new President of Hiden Intelligence, following the passing of his grandfather.
* ClingyJealousGirl: Downplayed. She seems to be shocked when Delmo (a model-type [=HumaGear=]) hugs Aruto.
* ContrastingSequelMainCharacter: Both Is and [[Series/KamenRiderZiO Tsukuyomi]] are close friends to their series' main protagonists, but their paths diverge in a few ways. Is automatically became Aruto's assistant after he was appointed as a CEO of Hiden, while Tsukuyomi chose to befriend Sougo in order to prevent him from becoming Ohma Zi-O. Is is a [=HumaGear=] created by Hiden Intelligence, giving her a lot of knowledge but no real emotions, while Tsukuyomi is a resistance fighter [[spoiler:and originally a princess willing to destroy time, until she lost her memories]] with a full range of emotional expression. [[spoiler:They also both died near the end of their respective series, were revived in the finale epilogue with no memories of past events, and transformed into Kamen Riders at some point, but at different times and in different ways: Is became the already existing Kamen Rider Zero-Two by borrowing the Driver from Aruto in the post-series movie ''[=REAL×TIME=]'', while Tsukuyomi became the original rider Kamen Rider Tsukuyomi in the last episodes of her series.]]
* DontExplainTheJoke: Due to how bad Aruto's jokes are, she usually has to be the one to explain the meaning behind them, much to his annoyance.
* EmotionlessGirl: She begins the series with pleasant mannerisms, but has no emotional responses to any events around her, showing her basic politeness to be surface-level only. This changes over time. [[GrewBeyondTheirProgramming After achieving Singularity]], she begins to display positive and negative emotions of all kinds, from happiness to annoyance to chagrin.
* {{Foil}}: [[spoiler:Becomes one to Ark-Zero once she reawakens Zea within her. Like Ark-Zero, she's now capable of 3D printing and fabrication on her own, and shares Ark-Zero's immense processing and calculation abilities, but unlike Ark-Zero, she's a non-combatant that believes in the potential of humans and AI working together, while Ark-Zero is a MisanthropeSupreme that wants to KillAllHumans and is more than willing to do so personally. During the ''[=REAL×TIME=]'' movie, this even extends to becoming a Rider like Ark-Zero did, but acting as Aruto's ally instead of his enemy, and utilizing the Zero-Two Progrisekey formed from the original Is' bond with Aruto as opposed to the Ark's hatred of humanity.]]
* GrewBeyondTheirProgramming: Is gradually reaches Singularity over the course of the series, at first in minor ways like exploiting LoopholeAbuse against an exploitative customer but gradually evolving into taking on projects of her own free will (such investigating Yua's suspicious activity on her own initiative, saving Aruto from [=MetalCluster Hopper=]), pondering the nature of Singularity itself when asked, and acknowleging the concept of family thanks to Aruto [[spoiler:as well as Wazu's sacrifice for her sake]]. As the series progresses, she also comes to express hope and sadness, and displays attachment to others (especially Aruto). This also means she can be misled by her emotions, though: [[spoiler:when she first gains Zea's simulation abilities, she winds up trapped in a loop where Aruto dies over and over again and nearly breaks from the trauma, then lies to Aruto when Horobi communicates to her and other [=HumaGears=] in order to keep him safe, and is manipulated by As into taking direct action against Horobi that leads to her death.]]
* HeroicSuicide: [[spoiler:She attempts to do this by giving Aruto's Shining Hopper Progrise Key all the battle data she's collected for Zero-One, boosting its strength for him to defeat the Dodo Magia in exchange for permanently shutting herself down. However, Wazu forcibly takes her place.]]
* HesBack: In ''[=REAL×TIME=]'', [[spoiler:the second Is regains the memories of her previous self after coming into possession of the Zero-Two Driver and the Zero-Two Progrisekey and connecting with Satellite Zea, doing a FusionDance with an archived version of herself stored within Zea and restoring the original Is.]]
* IncrediblyLamePun: She begins to start using these after reaching Singularity, mostly as a result of Aruto's influence.
* IdiotBall: Falls for it in ''two major moments'', and coupled with her tendency to approach [=MetsubouJinrai.NET=] with no weapons or any form of protection, it puts her at a great risk of being harmed:
** In #15, she approaches a visibly hysterical, still-transformed Jin after Horobi is grievously wounded protecting him and [[BullyingADragon cheerfully announces, with a pleased smile, that Horobi has been defeated]]. Unsurprisingly, this results in the grieving and enraged Jin [[DontYouDarePityMe lashing out and attacking her]], leaving her badly wounded.
** In #42, [[spoiler:she falls for As's claims that Horobi will become the next Ark and will kill Aruto, and believes she can prevent this by [[BreakThemByTalking talking him out of it]] while keeping Aruto LockedOutOfTheLoop for his safety. This ends up eliciting [[DontYouDarePityMe the same reaction]] from Horobi as with Jin earlier and [[PoorCommunicationKills results in her getting killed by his hands]] this time.]]
* KilledOffForReal: [[spoiler:Her body self-destructs in Episode 42 after she's shot by Horobi. Shesta confirms this in episode 43 when Yaiba and Fuwa ask if she can be rebuilt, stating that there are no backups of her available. The new Is seen in the finale has her appearance, but none of her memories. Fully subverted in the climax of ''REAL×TIME'', where the original Is is restored to the body of the new Is through her backup in the Zero-Two Progrise Key.]]
* KirkSummation: She tries one on Horobi in episode 42 to try and talk him out of his crusade against humanity. [[spoiler:Unfortunately, it doesn't work, and she dies as a result.]]
* MultiTrackDrifting: A RunningGag is Is accomplishing this ''without a vehicle'', making high-speed drifts across the ground when delivering new gear and Progrisekeys to Aruto. [[spoiler:Once she becomes Zero-Two, this even becomes [[SlideAttack her finishing move]].]]
* NoPlansNoPrototypeNoBackup: Because of the data she has about the Zero-One Project, there are no backups of Is's central memory, unlike many other [=HumaGears=]--and there ''never'' will be, even with her [=HumaGear=] Progrisekey, in order to avoid a potential security leak. If she's ever irreversibly hacked or completely destroyed, [[DeaderThanDead there's no bringing her back.]] [[spoiler:This is proven when it's shown that the new Is introduced in the finale does not have her personality from before her death, reverting all of her character development. It's later heavily implied that this was {{Subverted}} almost entirely ''by accident'': REAL×TIME shows that Zea did have a backup of the original Is' data, implicitly because the Zero-Two Progrisekey was created from Is' central memory, allowing the original Is to be restored.]]
* OutOfCharacterAlert: Subverted in the President Specials - [[spoiler:long-haired Is]]' completely different behavior and inability to remember much of the plot thus far has yet to raise any red flags with Aruto. [[spoiler:And then comes the revelation that the long-haired Is was actually As, the Ark's recreation of her.]]
* ReplacementGoldfish: [[spoiler:The Is we see in the finale of the show is this to the original Is, as they share a physical appearance but no memories. Aruto takes it upon himself to re-teach her everything that her predecessor knew. Subverted in ''[=REALxTIME=]'' when Is the Zero-Two Progrisekey and the original Is's backup is restored onto the new Is.]]
* RippleEffectProofMemory: In ''Kamen Ride Reiwa: The Next Generation'', she was already aware of the changes to the timeline when Aruto finds her again, [[spoiler:and it's heavily implied at the end that she remembers the altered timeline that was otherwise erased with Finis' death.]]
* RobotBuddy: She is designed to be the secretary of the Hiden Intelligence CEO, thus serving as Aruto's companion once he is named Korenosuke's successor.
* RobotGirl: She's a [=HumaGear=] modeled to have a female appearance.
* ScrewTheRulesImDoingWhatsRight: She originally intended to return to Hiden Intelligence to serve its new President as per her programming, despite Aruto and Jin's warnings that Gai ''will destroy her on sight''. It took Aruto's TakingTheBullet for her to convince her to take matters into her own hands, by establishing a secondary company and utilizing a little LoopholeAbuse to unlock the Zero-One Driver for Aruto again.
* SherlockScan: Sometimes combined with EnemyScan. Is can analyze anything she sees and process it. This can be used to identify people and objects; in scenarios where Zero-One is in battle, she can locate the weak points or source of the abilities of a Magia, then turn it into a battle data recording and inform Zero-One of the most effective way to attack.
* SpellMyNameWithAnS: Her personal [=HumaGear=] Progrise Key confirms that her name is meant to be spelled "Is", but her name in some subs is spelled "Izu", according to its pronunciation.
* SpontaneousWeaponCreation: [[spoiler:After Zea is awakened in her, there's an implication that she can do this just like Ark-Zero can, as she creates both the Zero-Two Progrisekey and the Zero-Two Driver much like how Ark-Zero fabricates its own weapons.]]
* SuperPoweredRobotMeterMaid: Albeit in a downplayed manner that is logical within the story. Is is a secretary robot to a superhero, and while she remains a non-combatant she still tosses Aruto his briefcase sword or Progrise Keys from the sidelines. Episode 3 confirms she's strong enough to evacuate a grown man on piggyback, at a brisk run - without the added weight she can reach the speed of a motorcycle! As seen in episode 24, she's even capable of leaping into the air almost like Zero-One!
* TookALevelInBadass: In the ''[=REAL×TIME=]'' film, [[spoiler:Is goes from being a non-combatant that acts as support for Aruto to fighting side-by-side with him, even becoming [[UpToEleven Kamen Rider Zero-Two]].]]
* TragicKeepsake: [[spoiler:She's carrying Wazu's watch with her after his death]], [[spoiler:and her own bow briefly becomes one for Aruto once Horobi kills her in Episode 42.]]
* UnwittingInstigatorOfDoom: Serves as one twice.
** Because she chose MC Check It Out to represent Hiden for the final round of the Workplace Competition, [[spoiler:Hiden Intelligence loses, costing Aruto his position as president and turning the company over to ZAIA Enterprise.]]
** [[spoiler:She chooses not to move out of the way of Horobi's final attack, firmly committing to talking him down by any means necessary. This results not only in her death but Aruto's transformation into Kamen Rider Ark-One.]]
* YouGottaHaveBlueHair: She has green streaks in her hair.
[[/folder]]

[[folder:Wazu Nazotoku]]
!!Wazu Nazotoku
!!!'''Portrayed by:''' Kouji Tsujimoto
[[quoteright:275:https://static.tvtropes.org/pmwiki/pub/images/wazu_nazotoku_0.png]]
[[caption-width-right:275:''You see, my dear Is...'' I ''am your older brother.'']]

An ace detective-type [=HumaGear=] who appears to help prove Aruto and Hiden Intelligence's innocence after they were being accused of manufacturing the multiple Little Assassins that went berserk and eventually attempted murder. He is also a prototype model [=HumaGear=] personally designed by Korenosuke as the base for Is's model later on, technically making himself her "older brother".
----

[[folder:Shesta]]
!!Shesta
!!!'''Portrayed by:''' Asumi Narita
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/shesta.png]]
A Secretary-Type AI assistant [=HumaGear=] assigned to Jun Fukuzoe as his personal assistant.

* ExactWords: She's a ''Vice-President's'' assistant, end of discussion; when Aruto reactivates her, she says that she can't work for him because he's the President, and promptly "replaces" herself with a copy of Matsurida Zetto.
* PutOnABus: After Gai's takeover of Hiden Intelligence, Shesta is reduced to her [=HumaGear=] Progrise Key, with her original body presumably decommissioned. When given the opportunity to return to action through a blank [=HumaGear=], Shesta refuses, citing that she's not a President's secretary. [[TheBusCameBack She later comes back in episode 37 at Jun and Sanzo's request to help them get evidence to fire Gai as president.]]
* RobotGirl: Just like Is, she's a [=HumaGear=] with an adult female appearance.
* SatelliteCharacter: Same deal as Sanzo; she's really only around as an attachment to Fukuzoe. However, she does drop her cold behavior when the board confirms Aruto in his position as company president, even applauding for his success. And despite her differences with Is, they're willing to work together when needed.
* ShadowArchetype: While Is has it in her algorithm somewhere to help Aruto become a better CEO (and Kamen Rider), Shesta is a textbook enabler and tool of Jun in more ways than one. Though she also has a tendency to state facts bluntly like Is does, this is often framed in the same cold, business-focused terms as Jun's behavior tends to be.
* TheStoic: To the point of never going beyond a MachineMonotone. She's Jun's secretary and ''nothing else.''
* UnEvilLaugh: Unlike Jun and Sanzo, hers isn't even close to being an EvilLaugh. It's just her saying the word "ha" over and over again in her MachineMonotone.

[[folder:Bot Hakase]]
!!Bot Hakase
!!!'''Portrayed by:''' Shinji Rokkaku
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/bot_hakase.png]]
[[caption-width-right:250: ''This is a big discovery!'']]

A professor prototype [=HumaGear=] who was involved with the production of other prototype [=HumaGears=] in the Daybreak Project twelve years ago.
----
* LukeIAmYourFather: He openly admits that he was the one who created Horobi, ironically having originally intended the latter to be a Father-type [=HumaGear=].
* MamaDidntRaiseNoCriminal: He laments over the fact that a number of [=HumaGears=] he created for good ended up becoming part of the evil [=MetsubouJinrai.net=], Horobi being a prime example.
* ManchurianAgent: [[spoiler:He was hacked and controlled by Jin to place a jamming bug in Hiden Intelligence so as to prevent Satellite Zea from tracking Horobi when he is broken out of A.I.M.S. custody. Once that was done and he was released, he had no idea what was going on and why he ended up in Daybreak Town.]]
* MeaningfulName: His name is literally "Professor Bot".

* EvilCounterpart: To Kamen Rider Zero-One and Kamen Rider Zerozero-One. Whereas Kamen Rider Zero-One is fighting to defend humanity and help them co-exist with [=HumaGears=], Ichi-Gata is fighting with the explicit purpose of [=HumaGears=] dominating the human race. He also uses the [=CycloneRiser=], a variation of the [=MetsubouJinrai=] Force Riser that Aruto has to use during their battle, and uses the Rocking Hopper Zetsumerise Key to transform, contrasting with Aruto's Rising Hopper Progrise Key. This gets taken another step further in regards for their respective wishes: Zero-One wants to make humans ''and'' [=HumaGear=] smile, while Ichi-Gata wants to create a world where [=HumaGear=] can smile, making no mention of humans when stating this. [[spoiler:In truth, they are NotSoDifferent, as he helps humanity all along.]]

* DefrostingIceKing: Showing signs of this. It's telling that his reaction to Aruto's [[spoiler: losing the Workplace Competition and subsequent firing]] is not [[KickTheDog victorious taunting]], but relative silence and [[AndThenWhat inquiry as to the boy's future goals]]. After Aruto was defeated by Ark-Zero, he shows even more of this, by showing genuine concern for the young man.

* HonestCorporateExecutive: From what little we've seen, he seems to be someone genuinely committed to advancing humanity's progress by advocating partnerships with [=HumaGears=]. In the altered timeline when [[spoiler: Will becomes Another Zero-One and goes to kill Korenosuke, his last words was to tell Jun and Sanzo to escape because the ''employees'' are the company and that he counts on them making their dream come true.]]
* PlotTriggeringDeath: Korenosuke dies at some unspecified but relatively short time before the story begins; his will naming his grandson Aruto as the new CEO of Hiden Intelligence is what starts Aruto's journey. News of his death also became the driving factor for Horobi to initiate [=MetsubouJinrai.NET=]'s Project Magia [[spoiler: through Naki by Amatsu Gai]], the very event Korenosuke feared would happen.

** Just before [[spoiler: Zea gets destroyed and its satellite taken over by Ark-Zero, it manages to escape by transferring the core of its programming [[FusionDance into Is.]]]]
** Soon after, [[spoiler: Is' central memory drive, containing Zea, was converted into the Zero-Two Progrisekey. This became its main interface from then on, with the Zero-Two Driver also acting as a convenient terminal.]]
* BroughtDownToBadass: Near the end of the show, [[spoiler: Zea is forced out of its satellite body and into Is, and then transferred into the Zero-Two Progrisekey]]. In either state, it's still an ''incredibly'' powerful supercomputer capable of even greater predictive speeds than the Ark.
* ChekhovsGun: One that lasts past the end of the series. [[spoiler: Because the Zero-Two Progrisekey was created from Is's central memory, Zea retained a copy of her data from at least up until the time of its creation. The second Is is able to regain the memories of the first in ''REAL×TIME'' just by picking up the Zero-Two Driver and Progrisekey and doing a SplitPersonalityMerge with the original Is' data.]]

* DistaffCounterpart: While Zea never speaks directly or establishes if it has a gender identity, its commands are announced in a female voice in contrast to the male-voiced Ark. [[spoiler: The [=HumaGear=] body Zea is eventually pushed into is also female.]]

* GrewBeyondTheirProgramming: Heavily implied to have also reached Singularity at some point, which not only gives it the capacity to perform the LoopholeAbuse below, but also [[spoiler: [[EveryoneHasStandards outright reject]] Gai's demands to start [[WarForFunAndProfit mass-producing [=RaidRisers=]]]. Based on what Aruto said in Episode 40, this may have been because of how it responded to Is' memories and emotions; as she grew into her Singularity, Zea may have learned from her.]]

* SoulJar: They act as this for [=HumaGears=] as a whole after the Workplace Competition arc. Aruto can not only reactivate any decommissioned Humagear by scanning their respective Progrise Key on their earpiece, but also recreate any [=HumaGear=] by scanning its Progrise Key on a blank [=HumaGear=]'s earpiece. [[spoiler: The final episode reveals that Is' Progrise Key doesn't possess the latter ability, necessitating that she be rebuilt and relearn everything manually.]]

* AwesomenessByAnalysis: [[spoiler: Integrating Zea's data]] gives Is the ability to experience simulations so advanced that they border on clairvoyant and are nigh-indistinguishable from reality. [[BlessedWithSuck This is]] '''[[BlessedWithSuck not]]''' [[BlessedWithSuck as great as it might first sound.]]

* ContrastingSequelMainCharacter: Both Is and [[Series/KamenRiderZiO Tsukuyomi]] are close friends to their series' main protagonists, but their paths diverge in a few ways. Is automatically became Aruto's assistant after he was appointed as a CEO of Hiden, while Tsukuyomi chose to befriend Sougo in order to prevent him from becoming Ohma Zi-O. Is is a [=HumaGear=] created by Hiden Intelligence, giving her a lot of knowledge but no real emotions, while Tsukuyomi is a resistance fighter [[spoiler: and originally a princess willing to destroy time, until she lost her memories]] with a full range of emotional expression. [[spoiler:They also both died near the end of their respective series, were revived in the finale epilogue with no memories of past events, and transformed into Kamen Riders at some point, but at different times and in different ways: Is became the already existing Kamen Rider Zero-Two by borrowing the Driver from Aruto in the post-series movie ''[=REAL×TIME=]'', while Tsukuyomi became the original rider Kamen Rider Tsukuyomi in the last episodes of her series.]]

** In episode 15, she approaches a visibly hysterical, still-transformed Jin after Horobi is grievously wounded protecting him and [[BullyingADragon cheerfully announces, with a pleased smile, that Horobi has been defeated]]. Unsurprisingly, this results in the grieving and enraged Jin [[DontYouDarePityMe lashing out and attacking her]], leaving her badly wounded.
** In Episode 42 [[spoiler: she falls for As's claims that Horobi will become the next Ark and will kill Aruto, and believes she can prevent this by [[BreakThemByTalking talking him out of it]] while keeping Aruto LockedOutOfTheLoop for his safety. This ends up eliciting [[DontYouDarePityMe the same reaction]] from Horobi as with Jin earlier and [[PoorCommunicationKills results in her getting killed by his hands]] this time.]]

* ReplacementGoldfish: [[spoiler: The Is we see in the finale of the show is this to the original Is, as they share a physical appearance but no memories. Aruto takes it upon himself to re-teach her everything that her predecessor knew. Subverted in ''[=REALxTIME=]'' when Is the Zero-Two Progrisekey and the original Is's backup is restored onto the new Is.]]
* RippleEffectProofMemory: In ''Kamen Ride Reiwa: The Next Generation'', she was already aware of the changes to the timeline when Aruto finds her again, [[spoiler: and it's heavily implied at the end that she remembers the altered timeline that was otherwise erased with Finis' death.]]

* SpontaneousWeaponCreation: [[spoiler: After Zea is awakened in her, there's an implication that she can do this just like Ark-Zero can, as she creates both the Zero-Two Progrisekey and the Zero-Two Driver much like how Ark-Zero fabricates its own weapons.]]

** Because she chose MC Check It Out to represent Hiden for the final round of the Workplace Competition, [[spoiler: Hiden Intelligence loses, costing Aruto his position as president and turning the company over to ZAIA Enterprise.]]

* DoAndroidsDream: [[spoiler: As he "dies", he projects a brief flashback to when Korenosuke entrusted him with the major task of assisting Aruto and Is when the time comes, causing him to ask this in his last moments.]]
* GrewBeyondTheirProgramming: [[spoiler: As confirmed by Korenosuke in a flashback,]] Wazu has awakened to his Singularity, having gained self-awareness and producing a very humanlike eccentric personality as a result.
* GutFeeling: [[spoiler: Probably a result of having achieved Singularity, he advised Aruto against using the Shining Hopper Progrise Key, suggesting to use Breaking Mammoth instead, just based on a feeling he had, and sure enough, it turns out to have been incomplete and insufficient to beat the Dodo Magia.]]

* NoPlansNoPrototypeNoBackup: [[spoiler: Just like Is, because he's a part of the Zero-One Project, there are no backups of his central memory in order to prevent security leaks.]]

* CrazyPrepared: [[spoiler: Even as a prototype [=HumaGear=], Soreo noticed the first signs that something was very wrong with the Ark 12 years prior, with it causing other [=HumaGears=] to go berserk, and thus designed the Zero-One system for specifically Aruto's use in the future should the current attempts to take down the Ark fail. His thoughts were well-justified, as the Ark did manage to restore itself in the present day.]]
* DiedInYourArmsTonight: [[spoiler: Dies in Aruto's arms in the altered timeline after Zerozero-One defeats him, [[SoProudOfYou confident that his son has what it takes to become the first Reiwa Rider]], without the past defining who he is]].

* LiteralMinded: When Aruto catches him revived in the altered timeline, he and his allies wonder if Soreo was this trope when he told him he wanted to "make him smile for real." [[spoiler: As Soreo reveals to Will, and later Aruto in his final moments, he understood Aruto's words perfectly, subverting this trope and serving as the key difference between him and Will.]]

* SecretTestOfCharacter: [[spoiler: Feigns being fully taken over by the Ark's directives in the altered timeline and coaxes Aruto into a fight as Ichi-Gata, killing himself in the process but also proving that his son is worthy enough to stand out on his own and become the first Reiwa Rider]].
* SuicideByCop: [[spoiler: In the altered timeline, Soreo manipulates Aruto into a situation where the only way out is to kill him, as part of a SecretTestOfCharacter to see if Aruto is worthy of being the first Reiwa Rider]].

* ManchurianAgent: [[spoiler: He was hacked and controlled by Jin to place a jamming bug in Hiden Intelligence so as to prevent Satellite Zea from tracking Horobi when he is broken out of A.I.M.S. custody. Once that was done and he was released, he had no idea what was going on and why he ended up in Daybreak Town.]]

[[/folder]]

* LoopholeAbuse: How Zea allows Aruto to continue being Kamen Rider Zero-One. As stated in Korenosuke's will, only the President can be allowed to use the Zero-One Driver. [[spoiler:However, Zea and all technology relating to the Zero-One Driver and [=HumaGear=] were patented under the Hiden family name, meaning Aruto owns the tech, not Gai.]] Also, Korenosuke [[ExactWords never specified the user had to be the President of '' Hiden Intelligence''.]] [[spoiler:Is takes full advantage by having Zea register all of Aruto's patents under his new company, HIDEN Manufacturing.]]

By Episode 30, [[spoiler:Is left Hiden Intelligence, and assumed the role of Aruto's assistant in his new position as president of HIDEN Manufacturing.]] [[spoiler:She is killed by Horobi in Episode 42; in the finale, Aruto builds a new Is model, with none of her memories from the series due to secruity protocols related to the Zero-One Project.]]

* AscendedToAHigherPlaneOfExistence: According to ''[=REAL×TIME=]'', [[spoiler:Zea had been observing Is long enough to have a virtual copy of her already in its memory when the second Is accesses Zea through the Zero-Two Driver and Progrisekey. The second Is joining with this virtual copy effectively brings the original Is back to life.]]

* BackFromTheDead: [[spoiler:A sad variant. The original Is is truly gone for good once the series ends, but Aruto creates a [=HumaGear=] with her exact physical appearance. While she's not truly Is as he knew her, Aruto takes it in stride, reteaching all the things he wants her to know. This is played straighter in ''[=REAL×TIME=]'' when the second Is gets the chance to recover the memories of her predecessor from Zea via the Zero-Two Driver and Progrrisekey.]]

* HesBack: In ''[=REAL×TIME=]'', [[spoiler:the second Is regains the memories of her previous self after coming into possession of the Zero-Two Driver and the Zero-Two Progrisekey and connecting with Satellite Zea, doing a FusionDance with an archived version of herself stored within Zea.]]

* KilledOffForReal: [[spoiler:Her body self-destructs in Episode 42 after she's shot by Horobi. Shesta confirms this in episode 43 when Yaiba and Fuwa ask if she can be rebuilt, stating that there are no backups of her available. The new Is seen in the finale has her appearance, but none of her memories until the climax of ''REAL×TIME''.]]

* NoPlansNoPrototypeNoBackup: Because of the data she has about the Zero-One Project, there are no backups of Is's central memory, unlike many other [=HumaGears=]--and there ''never'' will be, even with her [=HumaGear=] Progrisekey, in order to avoid a potential security leak. If she's ever irreversibly hacked or completely destroyed, [[DeaderThanDead there's no bringing her back.]] [[spoiler:This is proven when it's shown that the new Is introduced in the finale does not have her personality from before her death, reverting all of her character development. It's later heavily implied that this was {{Subverted}} almost entirely ''by accident'': REAL×TIME shows that Zea did have a copy of the original Is' data, implicitly because the Zero-Two Progrisekey was created from Is' central memory.]]

* ReplacementGoldfish: [[spoiler: The Is we see in the finale of the show is this to the original Is, as they share a physical appearance but no memories. Aruto takes it upon himself to re-teach her everything that her predecessor knew.]]

----

* ContrastingSequelMainCharacter: Both Is and [[Series/KamenRiderZiO Tsukuyomi]] are close friends to their series' main protagonists, but their paths diverge in a few ways. Is automatically became Aruto's assistant after he was appointed as a CEO of Hiden, while Tsukuyomi chose to befriend Sougo in order to prevent him from becoming Ohma Zi-O. Is is a [=HumaGear=] created by Hiden Intelligence, giving her a lot of knowledge but no real emotions, while Tsukuyomi is an amensiac [[spoiler:born into a royal family]] that eventually became a resistance fighter with a more natural range of emotional expression despite her calm personality. [[spoiler:They also both died near the end of their respective series, were revived in the finale epilogue with no memories of past events, and transformed into Kamen Riders at some point, but at different times and in different ways: Is became the already existing Kamen Rider Zero-Two by borrowing the Driver from Aruto in the post-series movie ''[=REAL×TIME=]'', while Tsukuyomi became an original Rider, Tsukuyomi, in the last episodes of her series.]]

* AscendedToAHigherPlaneOfExistence: According to ''[=REAL×TIME=]'', [[spoiler:Zea had been observing Is long enough to have a virtual copy of her already in its memory when the second Is accesses Zea through the Zero-Two Driver and Progrisekey, allowing Is to piece herself back together.]]

* ContrastingSequelMainCharacter: Both Is and [[Series/KamenRiderZiO Tsukuyomi]] are close friends to their series' main protagonists. Is became Aruto's assistant after he was appointed as a CEO of Hiden, while Tsukuyomi befriended Sougo in order to prevent him from becoming Ohma Zi-O. Is is a [=HumaGear=] created by Hiden Intelligence; Tsukuyomi is a amensiac young woman [[spoiler:born into a royal family]] that eventually became a resistance fighter. Both of them [[spoiler:were killed near the end of their respective series, were revived in the finale epilogue with no memories of their series events, and transformed into Kamen Riders at some point, albeit at different times and in different ways: Is became Kamen Rider Zero-Two, borrowing the Driver from Aruto, for part of ''[=REAL×TIME=]'', while Tsukuyomi became an original Rider near the end of her series, prior to the Zi-O movie.]]

* HesBack: In ''[=REAL×TIME=]'', [[spoiler:Is regains the memories she lost following her destruction at Horobi's hands after coming into possession of the Zero-Two Driver and the Zero-Two Progrisekey and connecting with Satellite Zea, doing a FusionDance with an archived version of herself stored within Zea.]]

* KilledOffForReal: [[spoiler:Her body self-destructs in Episode 42 after she's shot by Horobi. Shesta confirms this in episode 43 when Yaiba and Fuwa ask if she can be rebuilt, stating that there are no backups of her available. The new Is seen in the finale has her appearance, but none of her memories.]]

* RippleEffectProofMemory: In ''Reiwa: The Next Generation'', she was already aware of the changes to the timeline when Aruto finds her again, [[spoiler: and it's heavily implied at the end that she remembers the altered timeline that was otherwise erased with Finis' death.]]

* TragicKeepsake: [[spoiler:She's carrying Wazu's watch with her after his death]], [[spoiler:and her own bow becomes one for Aruto once Horobi kills her in Episode 42.]]

A prototype [=HumaGear=] made to replicate Aruto's father. He sacrificed himself to protect Aruto when he was younger. In ''[[TheMovie Kamen Rider Reiwa The First Generation]]'', he becomes Kamen Rider Ichi-Gata in the altered timeline.

* AscendedToAHigherPlaneOfExistence: [[spoiler:A variant. #44 shows him appearing inside of Zea, which heavily implies that while his physical body is gone; his data still resides within the satellite.]]

* CrazyPrepared: According to his will, he knew the RobotWar was about to happen soon, so Satellite Zea was already programmed to fabricate the Zero-One Driver and give Is her orders. This implies he deliberately chose Aruto as the person to become 'Zero-One specifically' and not just the heir to the company. Many of Aruto's advantages come from Korenosuke anticipating his situation and preparing an appropriate response, but eventually RealityEnsues and this supply of preparations runs dry, forcing Aruto to stop relying on his grandfather's help right when he needs it most.

* FamousLastWords: [[spoiler:In ''[[TheMovie Kamen Rider Reiwa The First Generation]]'', as he dies from Aruto's Rising Utopia, he explains why he pretended to be evil, and dies feeling proud for him [[WhatIsThisFeeling for the first time]].]]
-->'''Soreo:''' [[spoiler: Because I wanted you to realize... That you weren't anyone's successor. I wanted you to leap towards your own dreams. To become the first of a new generation. [[SoProudOfYou This is such a strange feeling]].]]

* ContrastingSequelMainCharacter: Both Is and [[Series/KamenRiderZiO Tsukuyomi]] are close friends to their series' main protaganist. Is became Aruto's assistant after he was appointed as a CEO of Hiden, while Tsukuyomi befriended Sougo in order to prevent him from becoming Ohma Zi-O. Is is a [=HumaGear=] created by Hiden Intelligence; Tsukuyomi is a amensiac young woman [[spoiler:born into a royal family]] that eventually became a resistance fighter. Both of them [[spoiler:were killed near the end of their respective series, were revived in the finale epilogue with no memories of their series events, and transformed into Kamen Riders at some point, albeit different kinds: Is became Kamen Rider Zero-Two, borrowing the Driver from Aruto, while Tsukuyomi became an original Rider near the end of her series.]]

* ContrastingSequelMainCharacter: Both Is and [[Series/KamenRiderZiO Tsukuyomi]] are close friends to their series' main protaganist. Is became Aruto's assistant after he was appointed as a CEO of Hiden, while Tsukuyomi befriended Sougo in order to prevent him from becoming Ohma Zi-O. Is is a [=HumaGear=] created by Hiden Intelligence; Tsukuyomi is a amensiac young woman [[spoiler:born into a royal family]] that eventually became a resistance fighter. Both of them [[spoiler:were killed near the end of their respective series, were revived in the finale epilogue with no memories of their series events, and transformed into Kamen Riders at some point: Is became Kamen Rider Zero-Two, while Tsukuyomi became a Rider near the end of her series.]]

* ContrastingSequelMainCharacter: Both Is and [[Series/KamenRiderZiO Tsukuyomi]] are close friends to their series main protaganist. Is became Aruto's assistant after he was appointed as a CEO of Hiden, while Tsukuyomi befriended Sugo in order to prevent him from becoming Ohma Zi-o after traveling to his timeline. Is is a [=HumaGear=] created by Hiden Intellegience while Tsukuyomi is a amensic young woman who was born into a Royal family and eventually became a resistance fighter. Both of them were killed near the end of their respective series but were revived in the finale epilogue with no memories of their series events and they also transformed into Kamen Riders at some point. Is temporary became a Rider in the movie after borrwing Aruto's Zero-Two form, while Tsukyomi became a Rider near the end of her seires after obtaining her own TransformationTrinket.

* ContrastingSequelMainCharacter: Both Is and [[Series/KamenRiderZiO Tsukuyomi]] are close friends to their series main protaganist. Is became Aruto's assistant after he was appointed as a CEO of Hiden, while Tsukuyomi befriended Sugo in rder toprevent him from becoming Ohma Zi-o after traveling to his timeline. Is is a [=HumaGear=] created by Hiden Intellegience while Tsukuyomi is a amensic young woman who was born into a Royal family and eventually became a resistance fighter. Both of them were killed near the end of their respective series but were revived in the finale epilogue with no memories of their series events and they also transformed into Kamen Riders at some point. Is temporary became a Rider in the movie after borrwing Aruto's Zero-Two form, while Tsukyomi became a Rider near the end of her seires after obtaining her own TransformationTrinket.

* ClingyJealousGirl: Downplayed. She seems to be shocked when Delmo (a model-type [=HumaGear=]) hugs Aruto.\

* ClingyJealousGirl: Downplayed. She seems to be shocked when Delmo (a model-type [=HumaGear=]) hugs Aruto.

A space satellite created by Hiden Intelligence, which monitors and manages all Hiden Intelligence technology on Earth, including [=HumaGears=] and Zero-One. It interacts with Hiden Intelligence's on-Earth security system ''Zat'' to process its commands.

** Its Earth-based security system that processes its commands, ''Zat'', is similarly named after the word ''"That"''.

* DistaffCounterpart: While Zea never speaks directly or establishes if it has a gender identity, its commands are annaounced in a female voice in contrast to the male-voiced Ark. [[spoiler: The [=HumaGear=] body Zea is eventually pushed into is also female.]]

[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/hi_satellite.jpg]]

A space satellite created by Hiden Intelligence, which monitors and manages all Hiden Intelligence technology on Earth, including [=HumaGears=] and Zero-One.

* DistaffCounterpart: While Zea never speaks directly or establishes if it has a gender identity, it's referred to in a feminine manner in contrast to the male-voiced Ark. [[spoiler: The [=HumaGear=] body Zea is eventually pushed into is also female.]]

* MeaningfulName: As with the English grammatical ThemeNaming of the [=HumaGears=] close to Korenosuke Hiden, Zea is named based on the word "There" pronounced in Japanese. This is especially evident in episode 39, where a rocket bearing its name calls it "Satellite There".

!!!'''Portrayed by:''' [[Creator/MaoIchimichi M • A • O]]

* ChekhovsGun: One that lasts past the end of the series. [[spoiler: Because the Zero-Two Progrisekey was created from Is's central memory, Zea retained a copy of her data from at least up until the time of its creation. The second Is is able to regain the memories of the first in REAL×TIME just by picking it up and doing a SplitPersonalityMerge.]]

* BrainUploading: Of a sort--a [=HumaGear=] Progrise Key carries the personality, memories, and occupational data of the [=HumaGear=] that the Key was made for.

* AscendedToAHigherPlaneOfExistence: According to ''[=REAL×TIME=]'', [[spoiler:Zea had been observing Is long enough to have a virtual copy of her already in there when the second Is logs on, allowing Is to piece herself back together.]]

* BackFromTheDead: [[spoiler:A sad variant. The original Is is truly gone for good once the series ends, but Aruto creates a [=HumaGear=] with her exact physical appearance. While she's not truly Is as he knew her, Aruto takes it in stride, reteaching all the things he wants her to know.]]

* GrewBeyondTheirProgramming: Is gradually reaches Singularity over the course of the first fifteen episodes, at first in minor ways like exploiting LoopholeAbuse against an exploitative customer, making rapid deductions to investigate suspicious activity on her own initiative, and pondering the nature of Singularity when asked her opinion about it. She reaches Singularity when she comes to understand and express the concept of family thanks to Aruto [[spoiler:as well as Wazu's sacrifice for her sake]]. As the series progresses, this also leads her to act more and more humanlike, taking on projects of her own volition such as saving Aruto from [=MetalCluster=] Hopper, as well as experiencing both hope and sadness through attachment to others (especially Aruto). This also means she can be as infuenced by her emotions as humans are; she [[spoiler:commits the very human mistake of (unintentionally) appearing to gloat over Horobi's dying body, enraging Jin to the point where he stabs her in revenge and nearly kills her, lies to Aruto when Horobi communicates to her and other [=HumaGears=] and winds up dying while attempting to convince Horobi to stand down.]]

* HesBack: In ''[=REAL×TIME=]'', [[spoiler:after coming into possession of the Zero-Two Driver and the Zero-Two Progrisekey and connecting with Satellita Zea, Is regains the memories she lost following her destruction at Horobi's hands.]]

* NoPlansNoPrototypeNoBackup: Because of the data she has about the Zero-One Project, there are no backups of Is's central memory, unlike many other [=HumaGears=]--and there ''never'' will be, even with her [=HumaGear=] Progrisekey, in order to avoid a potential security leak. If she's ever irreversibly hacked or completely destroyed, [[DeaderThanDead there's no bringing her back.]] [[spoiler:This is proven when it's shown that the new Is introduced in the finale does not have her personality from before her death, reverting all of her character development. It's later heavily implied that this was {{Subverted}} almost entirely ''by accident.'' REAL×TIME shows that Zea did have a copy of the original Is' data, implicitly because the Zero-Two Progisekey was created from Is' central memory.]]

* RippleEffectProofMemory: [[spoiler:It's heavily implied at the end of ''Reiwa: The Next Generation'' that Is still remembers the altered timeline.]]