History NightmareFuel / KamenRiderZeroOne

* While Tribolite Magias are formed by being hacked by standard Magias back then, this is no longer the case, as some of the protesters actually become Trilobite Magia on their own anger and accord. Double as Tear Jerker.
* All the while while As just watch the final battle unfold, and her face only registers twisted malice.

* All the while while Azu just watch the final battle unfold, and her face only registers twisted malice.

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[[/folder: Episode 45: '''The Future of Each''']]

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* Zero-Two finally returns for the first time since Aruto became Ark One... but it's not in the hopeful and triumphant way one would think. His back to Fuwa as he transforms, the complete lack of the Zero Two Driver's catchy standby jingle, Aruto brandished the Zero-Two Driver as a mercy after disabling Fuwa's chip the last time. To really throw any hopes of Aruto returning to normal out the window without a miracle, Zero-Two emits a ''human'' scream when the muffler attaches, making it clear that Zea is now nothing but a tool of CruelMercy.

* Zero-Two finally returns for the first time since Aruto became Ark One... but it's not in the hopeful and triumphant way one would think. His back to Fuwa as he transforms, the complete lack of the Zero Two Driver's catchy standby jingle... Aruto brandished the Zero-Two Driver as a mercy after disabling Fuwa's chip the last time. To really throw any hopes of Aruto returning to normal out the window without a miracle, Zero-Two emits a ''human'' scream when the muffler attaches, making it clear that Zea is now nothing but a tool of CruelMercy.
* While Naki's Zetsumetsu Key was able to grant Fuwa the ability to transform again, the strain on both him and the Shotriser might have permanently put Kamen Rider Vulcan out of commission.

* Aruto has a recurring, extremely twisted and creepy vision of As embracing him from behind over a field of the Ark's malice.

* Zero-Two finally returns for the first time since Aruto became Ark One... but it's not in the hopeful and triumphant way one would think. His back to Fuwa as he transforms, the complete lack of the Zero Two Driver's catchy standby jingle... Aruto brandished the Zero-Two Driver as a mercy after disabling Fuwa's chip the last time.

* Zero Two finally returns for the first time since Aruto became Ark One... but it's not in the hopeful and triumphant way one would think. His back to Fuwa as he transforms, the complete lack of the Zero Two Driver's catchy standby jingle... Aruto brandished the Zero Two Driver as a mercy after disabling Fuwa's chip the last time.

* Horobi finally receives an upgrade since debuting nearly 40 episodes ago, and [[OhCrap what an upgrade it is.]] We finally learn what the Key he received in the prior episode was; Ark Scorpion.
** As if that didn't already confirm the possibility of more than one Ark existing at a time, it couldn't be anymore apparent with Ark Scorpion's transformation and appearance. A convulsing, writhing mass of black, the glowing red kanji of hateful and negative words accompanying the scorpion that appears and wraps itself around Horobi.

* Horobi's finisher doesn't fare any better. Not only does Sting Dystopia not even land, but Ark-One seizes Horobi's stinger, uses it to pull him forward and through the ground, and beats him senseless.
* This episode's fight between Aruto and Horobi reveals that Learning 5 wasn't even the full power of the Ark One at full power. After Despair, Aruto continues pressing the Driver's button, giving us Strife, Bloodthirst, Ruin, Extinction and finally [[OhCrap Extermination.]] [[NamesToRunAwayFrom Perfect Conclusion;]] [[OhCrap Learning End.]]

* While Horobi and his army put up a decent fight at the start, Ark-One rather unsurprisingly tears through each and every one of them with ease. Especially once he's within close quarters combat distance of Horobi. Not even firing the Attache Arrow point blank into Ark-One's face so much as phases him.

[[folder: Episode 42: '''As Long as There's Malice''']]

* Ark-One is fueled by five aspects of human negativity in particular: Malice, fear, fury, hatred, and despair. In other words, the main ingredients of bigotry and prejudice. Aruto has essentially gone from the loving yet aloof president of Hiden Intelligence to a possibly psychotic, unambiguously evil avatar of hatred in the span of one episode. While Ark-One's stats are weaker than Zero-Two, it's through the power of malice alone that he becomes a fearsome force, easily taking down any who opposes him.

[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screenshot_2020_08_09_11_16_48_778_commiuivideoplayer.jpg]]
[[caption-width-right:350:''[[ComicBook/TheKillingJoke "That's how far the world is from where I am. Just one bad day."]]'']]

[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screenshot_2019_09_01_21_16_17_879_comfacebookkatana.png]]
[[caption-width-right:350:More teeth than a [[VideoGame/FiveNightsAtFreddys Fazbear animatronic]].]]

[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screenshot_2020_08_09_11_16_48_778_commiuivideoplayer.jpg]]
[[caption-width-right:350:''The malice fully consumed him, making him the very same monster he opposed...'']]

* Ark-One:
** Aruto gives into the DespairEventHorizon and is given the Ark-One key to evolve Ark-Zero into Ark-One, an upgrade literally MadeOfEvil in a digital format, with him as the host. As if this wasn't shocking enough, the episode makes it very clear that Aruto is ''NotBrainwashed'' throughout the whole ordeal, willingly absorbing the suit's cocktail of raw, unfiltered hatred, and even ''smiles'' when he sees the key in Azu's hand. Unless someone sets him right, ''Zero-One'' has managed to do something that hasn't been done before: make a protagonist Rider completely [[FallenHero fall from grace]].
** Ark-One is fueled by five aspects of human negativity in particular: Malice, fear, fury, hatred, and despair. In other words, the main ingredients of bigotry and prejudice. Aruto has essentially gone from the loving yet aloof president of Hiden Intelligence to a possibly psychotic, unambiguously evil avatar of hatred in the span of one episode. While Ark-One's stats are weaker than Zero-Two, it's through the power of malice alone that he becomes a fearsome force, easily taking down any who opposes him.
** Ark-One's parts list isn't as intense as the one for Ark-Zero (which explains in detail how the suit only works because the host is essentially on life support), but there are two particular standout implications: First, the red face jewel (the Ark Signal-One) on the faceplate silences the host's benevolence and stops any potential mental trauma from directly harming them - however, it's described as a ''calming'' experience for them, meaning Aruto might be in a state of humanly-impossible ''perfect zen'' while in the suit. Second, the Ergonice Arms are mentioned to ''inject'' the black-and-crimson, hate-filled energy into the host. Any regrets and doubts Aruto might have about being the Ark's new host may be enough to send him into a nervous breakdown out of the suit, but ''as'' Ark-One, they're all completely wiped out until only bitter prejudice remains.

[[caption-width-right:350:''The malice fully consumed and making him the very same monster he opposed...'']]

[[caption-width-right:350:''The darkness fully consumed and making him the very same monster he opposed...'']]

* Aruto gives into the DespairEventHorizon and is given the Ark-One key to evolve Ark-Zero into Ark-One, an upgrade literally MadeOfEvil in a digital format, with him as the host. As if this wasn't shocking enough, the episode makes it very clear that Aruto is ''NotBrainwashed'' throughout the whole ordeal, willingly absorbing the suit's cocktail of raw, unfiltered hatred, and even ''smiles'' when he sees the key in Azu's hand. Unless someone sets him right, ''Zero-One'' has managed to do something that hasn't been done before: make a protagonist Rider completely [[FallenHero fall from grace]].
** As an added note, Ark-One is fueled by five aspects of human negativity in particular: Malice, fear, fury, hatred, and despair. In other words, the main ingredients of bigotry and prejudice. Aruto has essentially gone from the loving yet aloof president of Hiden Intelligence to a possibly psychotic, unambiguously evil avatar of hatred in the span of one episode.
** While Ark-One's stats are weaker than Zero-Two, it's through the power of malice alone that he becomes a fearsome force, easily taking down any who opposes him.

** While Ark-One's stats are laughable, it's through the power of malice alone that he becomes a fearsome force, easily taking down any who opposes him.

* Aruto gives into the DespairEventHorizon and is given the Ark-One key to evolve Ark-Zero into Ark-One, an upgrade literally MadeOfEvil in a digital format, with him as the host. As if this wasn't shocking enough, the episode makes it very clear that Aruto is ''NotBrainwashed'' throughout the whole ordeal, willingly absorbing the suit's cocktail of raw, unfiltered hatred, and even ''smiles'' when he sees the key in Azu's hand. Unless someone sets him right, ''Zero-One'' has managed to do something that hasn't been done before: make a protagonist Rider completely fall from grace.