History Series / KamenRiderZeroOne

* BrokenAesop: The final arc's aesop against revenge and hatred would land better if the previous arcs hadn't encouraged you to hate [[HateSink Gai]] and take joy in his misery. It also doesn't work on its own, since [[spoiler:Horobi's killing of Is was out of a desperate attempt to HandWave his burdgeoning emotions and scapegoat humans (despite acknowledging his love for his son Jin being what freed him from the Ark's control in the first place) and would have killed countless people if left unchecked, giving Aruto ample reasons to oppose him. The reason things spiral out of control isn't because Aruto tried to get revenge, but because he used the ObviouslyEvil Ark Driver, which convinced his friends he'd [[JumpOffTheSlipperySlope gone off the deep end]] despite ample evidence to the contrary and thus spent the latter half of the arc being lectured about his gear instead of properly helped through his trauma; only causing things to reach a boiling point]].

** In the final arc, no one thinks to talk to [[spoiler:Aruto after he becomes Ark-One]] even after it becomes clear he's acting of his volition. When Fuwa gets a chance to speak to him, [[spoiler:he offers him NoSympathy for the trauma he's going through nor does he put much effort into explaining to him the coming RobotWar that might result from his actions. Instead he just tells Aruto not to fight Horobi, which would have been an even worse option as it would have left a murderous terrorist on the loose, and opts to attack him when Aruto doesn't listen. Naturally this just leads to Aruto whooping him on his ass (somewhat rightfully) and being on his way.]]

** In the final arc, no one thinks to talk to [[spoiler:Aruto after he becomes Ark-One]] even after it becomes clear he's acting of his volition. When Fuwa gets a chance to speak to him, [[spoiler:he offers him NoSympathy for the trauma he's going through nor does he put much effort into explaining to him the coming RobotWar that might result from his actions. Instead he just tells Aruto not to fight Horobi, which would have been an even worse option as it would have left a murderous terrorist on the loose, and opts to attack him when Aruto doesn't listen. Naturally this just leads to Aruto whooping him on his ass ([[KickTheSonOfABitch somewhat rightfully]]) and being on his way.]]

** ''Series/KamenRiderOutsiders'', in addition to the above, has elements from numerous other seasons up to ''Revice''.

** Vulcan has the Attache Shotgun, a CoolGun, in addition to the [=ShotRisers=] that he and Valkyrie both use. Its intense recoil means Vulcan can use it best in Punching Kong form, but he and Valkyrie both get the hang of using it in other forms. Unlike the other weapons, this one isn't unique, with multiple copies floating around: the second copy is primarily used by Jin.

* ''Kamen Rider Zero-One: What Will Pop Out of the Kangaroo? Think About It by Yourself![[note]]A pun on "kangaroo" and "kangaeru", meaning "think"[[/note]] And That's How You Know It's Aruto!!'', a ''Televi-Kun'' magazine [[invoked]] BonusEpisode DVD.

** ''Series/KamenRiderOutsiders'', in addition to the above, has elements from ''Series/KamenRiderRyuki'' and ''Series/KamenRiderSaber''.

[[header:[[center:[-'''''Franchise/KamenRider'' -- Reiwa Era'''\\
'''Zero-One''' | ''[[Series/KamenRiderSaber Saber]]'' | ''[[Series/KamenRiderRevice Revice]]'' | ''[[Series/KamenRiderGeats Geats]]'' | ''[[Series/KamenRiderGotchard Gotchard]]''\\
'''[[Series/KamenRiderZiO <<< Phase 2 Heisei Era]]'''-]]]]]

* KickTheSonOfABitch: During the Hiden Manufacturing arc, Gai gets several severe beatdowns in a row. [[spoiler:It starts when he finds out that, even though he now owns Hiden Intelligence, he has no rights to their inventions or intellectual property, including the [=HumaGears=] he wants to destroy. After harassing Aruto at his new company, threatening almost definitely ''illegal'' damage against Hiden Manufacturing's property, Gai gets his backside handed to him repeatedly. Then, because of his constant taunts and reiteration that he only sees other people as tools to be used and discarded, even being willing to kill ''human beings'' if they get in his way, both the "wild dog" he wanted leashed and the one who was supposed to hold it for him break free of his MoreThanMindControl and team up to stop him from hunting down yet another [=HumaGear=] who he wants to destroy for no reason other than making himself look more powerful. Once all of that is done, Yua fights off his last futile attempt at using her RestrainingBolt to control her long enough to deck him in the mouth as her letter of resignation. Gai is left limp, humiliated, and utterly alone in all respects.]] [[HoistByHisOwnPetard A lot of it could have been avoided]] if he had just [[MeaninglessVillainVictory taken his victory]] and moved on.

What's more, it has [[SugarWiki/AwesomeMusi a kick-ass opening theme]] from Takanori Nishikawa, AKA Music/TMRevolution.[[note]]the guy who performed the original version of ''Hot Limit'', otherwise known in the west as ''[[MemeticMutation We Drink Retalin]]''[[/note]]

And oh, it has a kick ass opening theme from Takanori Nishikawa, AKA Music/TMRevolution.[[note]]the guy who performed the original version of ''Hot Limit'', otherwise known in the west as ''[[MemeticMutation We Drink Retalin]]''[[/note]]

After the passing of Hiden Intelligence founder Korenosuke Hiden, his last will [[UnexpectedSuccessor unexpectedly]] names his grandson Aruto as the next company president. Although Aruto [[RefusalOfTheCall would rather be a comedian than a businessman]], he takes up the role after witnessing an attack by [=MetsubouJinrai=].net firsthand. With the position comes the [[TransformationTrinket Hiden Zero-One Driver]], a belt [[AuthorityEqualsAsskicking DNA-locked to the current President of Hiden Intelligence]] that allows him to transform into Kamen Rider Zero-One.

** One of the alternate versions of [=MetalCluster=] Hopper's Metal Rising Impact is a drill manifesting in front of the opponent before Aruto kicks into it, very similar to the [[Series/KamenRiderFaiz Faiz-era Rider Kicks.]]

** In the final arc, the AIMS / ZAIA Riders ignore [[spoiler: the death of Izu]] to preach at Aruto for [[spoiler: wearing an Ark Driver and targeting Horobi]] instead of showing any sort of concern for [[spoiler: his grief]] (the reason forhis sudden change) and talking him down more directly; attacking him twice on the assumption he's evil now without really trying to explain why [[spoiler: his feud with Horobi is causing racial tensions per As' RobotWar aspirations]]). Isamu and Naki are particularly bad about this in the penultimate episode, going from a brief "You're not yourself" to just outright attacking him when he's not receptive. As expected, this [[spoiler: doesn't calm Aruto down and gets Isamu thrashed instead]].

** While Isamu and Yaiba were suspicious of Aruto early on in the show, it's taken to extremes in [=The StoneBot comics=]. AIMS' entire mission statement can be summarized as "de-motivate Aruto at all times." Other than the rescue they provide at the start of #2, every one of Fuwa and Yaiba's appearances thereafter consist of showing up, calling Aruto a poopyhead and then leaving; giving Aruto hollow speeches on why he's destructive and shouldn't be a Rider as if the blatantly-destructive data-monster wasn't even there; all while doing the bare minimum to contain the issue themselves.

** In the final arc, the AIMS / ZAIA Riders ignore [[spoiler: the death of Izu]] to preach at Aruto for [[spoiler: wearing an Ark Driver and targeting Horobi]] instead of showing any sort of concern for [[spoiler: his grief]] and talking him down more directly; attacking him twice on the assumption he's evil now without really trying to explain why [[spoiler: his feud with Horobi is causing racial tensions per As' RobotWar aspirations]]). Isamu and Naki are particularly bad about this in the penultimate episode, going from a brief "You're not yourself" to just outright attacking him when he's not receptive. As expected, this [[spoiler: doesn't calm Aruto down and gets Isamu thrashed instead]].
** In [=The StoneBot comics=], AIMS' entire mission statement can be summarized as "de-motivate Aruto at all times." Other than the rescue they provide at the start of #2, every one of Fuwa and Yaiba's appearances thereafter consist of showing up, calling Aruto a poopyhead and then leaving; giving Aruto hollow speeches on why he's destructive and shouldn't be a Rider as if he wasn't fighting a blatantly-destructive data-monster; all while doing the bare minimum to contain the issue themselves.

* BittersweetEnding: [[spoiler:Aruto manages to defeat Horobi without destroying him and even helps the latter realize he ''does'' have a heart, and Yua successfully manages to restore Jin since his data was stored in the Ark. The 'bitter' part comes when Aruto manages to rebuild Is from the ground up, but as this Is is essentially a brand new Humagear, she lacks all the memories and experiences of the original, though Aruto is working on reteaching her everything she knew previously. As is also still out there, and she isn't done as evident by the fact that she gives an unknown Progrisekey to S, the villain of TheMovie.]]

** If anything it's made a full reverse [[spoiler:The show ends with Is seemingly lost forever as she was, but everything else looking up and everyone else doing fine. Post Others Aruto gets Is back who continues to prove the emotional and moral potential of an AI and inherits the Zero Two driver to become Aruto's partner Kamen Rider, but almost everything else was lost instead, with the majority of the other Riders seemingly being dead except Yua (who has her power back in her most recent appearance) and almost everything else he worked for either being all for nothing or in serious jeopardy.]]

* CentralTheme: [[ThePowerOfLove Love and empathy]] vs [[ThePowerOfHate hatred and malice]]. Ultimately, every conflict in the series is started by someone's hatred, and the only thing that can effectively overcome it is another's sympathy and compassion. [[spoiler:The Ark and As are the only main antagonist of the series to ''not'' ultimately be beaten directly by acts of sympathy and compassion, and even then the Ark's defeat is the direct result of Horobi's love for Jin. Its ''will'', via As, is then defeated by Aruto having compassion and empathy for Horobi.]]
** It's zig-zagged though in that theme doesn't come into play until the final arc, and earlier arcs conflict with it, such as how [[HateSink Gai]] is presented as a character the audience is supposed to hate and want to see get beaten up.

* EasilyForgiven:

* KarmaHoudini: [[spoiler:Both of the {{Big Bad}}s (Gai Amatsu and the Ark) survive the saga and get off free in the end.]]

* AlternateUniverse: Similar to ''Series/KamenRiderBuild'', ''Zero-One'' takes place in a different world separate from the main Rider timeline (if [[SchizoContinuity such a thing exists]]), due to its premise having far-reaching societal implications, the biggest one being that the major leaps in computer and AI revolutions started in the Eighties and had rudimentary AI by that point sufficient to have AIBO- like robots. It was retconned later on post-series, as the characters of ''Zero-One'' intersecting with various Rider shows, starting with ''Genms ~The Presidents~'', a crossover special with ''Series/KamenRiderExAid''.