History Fridge / KamenRiderZeroOne

* In ''Film/KamenRiderReiwaTheFirstGeneration''. when Aruto transforms for the first time, a small joke is played out where the grasshopper doesn't appear for a few moments, and when it does, it's from the ground instead of the air. The reason why is because in the alternate timeline, Zea hadn't been launched into space and was instead being maintained underground. Meaning that the projection would have to travel through the ground to reach Aruto.

* Aruto's decision of starting a new company, Hiden Manufacturing after his resignation as CEO of Hiden Intelligence is actually much more sense. By inheriting the title of CEO from his grandfather Kurenosuke, Aruto basically inheriting Kurenosuke's vision of wanting [=HumaGear=] and humanity to coexist together, a feat that Aruto never managed to fullfil after ZAIA's hostile takeover over Hiden Intelligence. By starting his own company and becoming a CEO of his own rights, Hiden Manufacturing basically served as a SpiritualSuccessor to Hiden Intelligence, continuing Kurenosuke's legacy.
** However, Hiden Manufacturing also served as a {{Foil}} towards Hiden Intelligence.

* If observed carefully, certain mumbers of characters goal are actually aligned with characters from previous series:

** The '''[[BoxingKangaroo Ekal Magia]]''', also in the 2nd episode, was created from a security guard [=HumaGear=]. ''Ekaltadeta'' is an extinc not species of marsupial. Marsupials carry their children with them, ''guarding'' them from threats.

** The '''[[BoxingKangaroo Ekal Magia]]''', also in the 2nd episode, was created from a security guard [=HumaGear=]. ''Ekaltadeta'' is an extinct species of marsupial. Marsupials carry their children with them, ''guarding'' them from threats.

* By observing Jin's characterization before and after his revival, it makes much more sense if you think about it. Jin's PsychopathicManchild tendencies are influenced by his connection towards the Ark through the use of the [=ForceRiser=], which '''''forces''''' him to serve Metsuboujinrai.net; after his revival, he acts more mature and independent, while getting his handa on the [=SlashRiser=] can be interpreted as him '''''slashing'''''/severing his ties from the Ark while ''supposedly'' maintaining his loyalty to Metsuboujinrai.net.

* The revelation that Gai actually made the Raid Risers and their purpose of being used by civilians makes sense in many levels, being slimiar to civilian versions of law enforcement and military weapons, if the Shot/Slashrisers are akin to military grade weapons. This even comes down to their design of being stripped down Shotriser belts and sharing the same undersuits as the Shotrise ones. Even the choice of using common animal [=ProgRise=] keys shares this design method.
* By observing Jin's characterization before and after his revival, it makes much more sense if you think about it. Jin's PsychopathicManchild tendency are influenced by his connection towards the Ark through the use of [=ForceRiser=] as in '''''forcing''''' him to served Metsuboujinrai.net and after his revival,with him acting more mature and acting independent while getting his hand on the [=SlashRiser=] can be interpreted as him '''''slashing'''''/severing his ties from the Ark while ''supposedly'' maintaining his loyalty for Metsuboujinrai.net.

* By observing Jin's characterization before and after his death, it makes much more sense if you think about it. Jin's PsychopathicManchild tendency are influenced by his connection towards the Ark through the use of [=ForceRiser=] as in '''''forcing''''' him to served Metsuboujinrai.net and after his revival, him acting more mature and acting independent while getting his hand on the [=SlashRiser=] can be interpreted as him '''''slashing'''''/severing his ties from the Ark while ''supposedly'' maintaining his loyalty for Metsuboujinrai.net.

* By observing Jin's characterization before and after his death, it makes much more sense if you think about it. Jin's PsychopathicManchild tendency are influenced by his connection towards the Ark through the use of [=ForceRiser=] as in '''''forcing''''' him to served Metsuboujinrai.ne and after his revival, him acting more mature and acting independent while getting his hand on the [=SlashRiser=] can be interpreted as him '''''slashing'''''/ severing his ties from the Ark while ''supposedly'' maintaining his loyalty for Metsuboujinrai.net.

* By observing Jin's characterization before and after his death, it makes much more sense if you think about it. Jin's PhyschopathicManchild tendency are influenced by his connection towards the Ark through the use of [=ForceRiser=] as in '''''forcing''''' him to served Metsuboujinrai.net.

* By observing Jin's characterization before and after his death, it makes much more sense if you think about it. Jin's PhyschopathicManchild tendency are influenced by his connection towards the Ark through the use of [=ForceRiser=] as in '''''forcing''' him to served Metsuboujinrai.net.

** Gai as TheManBehindMan and GreaterScopeVillain, orchestrated multiple incidents for something grander for his own gain bear minds to [[Series/KamenRiderBuild Evolt]] playing the same role albeit to much higher destructive level.

** Jin having a somewhat genuine inten

** Aruto's goal of wanting to create a future where human and [=HumaGear=] to coexist peacefully but facing obstacles when trying to achieve that goal much like of how [[Series/KamenRiderAmazons Haruka]] wish for the same to his fellow Amazons.
** Isamu's IrrationalHatred towards [=HumaGear=] (pre-CharacterDevelopment) for starting his DarkAndTroubledPast and wanted to eradicate all [=HumaGear=] whether they were innocent or not, draws parallel with [[Series/KamenRiderDrive Go]] of having a similar one with the additional of having BlackAndWhiteInsanity towards Roidmude

** Isamu's IrrationalHatred towards [=HumaGear=] (pre-CharacterDevelopment) for starting his DarkAndTroubledPast and wanted to eradicate all [=HumaGear=] whether innocent or not, draws parallel with [[Series/KamenRiderDrive Go]] of having a BlackAndWhiteInsanity towards Roidmude

** Aruto's goal of wanting to create a future where human and [=HumaGear=] to coexist peacefully but facing obstacles when trying to achieve that goal much like of how [Series/KamenRiderAmazons Haruka]] wish for the same to his fellow Amazons.
** Isamu's IrrationalHatred towards [=HumaGear=] (pre-CharacterDevelopment) for starting his DarkAndTroubledPast and wanted to eradicate all [=HumaGear=] whether innocent or not, draws parallel with [Series/KamenRiderDrive Go] of having a BlackAndWhiteInsanity towards Roidmude

* Bingo Bengoshi seemed to be fine the next day after gaining his data back from being a Magia through the Zetsumeriser. There is no symbol or sign of him restarting his programming from scratch. This was most likely due to not being fully hacked by the Ark despite using a Zetsumeriser, so he managed to keep his original data safe. As of now, HumaGears do not need to fear of losing their entire data because Zero-One has the Progrise Hopper Blade to repair them from the Zetsumerisers and their Magia state.

* In episode 25, there are differences of definition of Kamen Rider towards [=HumaGear=] and subtle implications of [[TheGoodTheBadAndTheEvil White, Gray and Black Conflict]] from them:

* In episode 25, there are differences of definition of Kamen Rider towards [=HumaGear=] and subtle implications of [[TheGoodTheBadAndTheEvil White, Gray and Black Conflict]] from them:

*** Fuwa is a full-blown Gray as he vehemently believed all [=HumaGear=] is evil after a DarkAndTroubledPast occurred to him and wanted to destroy all of them but started to have [[ALighterShadeOfGrey a different opinion of them]] after being saved by them.
*** Jin is from the villain side but he is [[AntiVillain Anti]] [[ALighterShadeOfBlack Villain]] that [[WellIntentionedExtremist genuinely]] believe he will free all [=HumaGear=] from humanity and gaining true freedo in the process.