History Trivia / KamenRiderDouble

* FanNickname: Shirihiko [[note]] ''Shiri'' means butt[[/note]] and N'''ass'''ca, for his [[{{Fanservice}} butt scenes]].
** Isaka is "Weatherman".
** Mick is the [[WebOriginal/LOLCats Cheezburger Dopant]]

** RoleReprisal: The voice actors for ''Kamen Rider W'' casts from the action-adventure game ''Memory of Heroez'' are set to reprise their respective roles for the anime; [[Creator/YoshimasaHosoya Yoshimasa Hosoya]] as Shotaro Hidari, [[Creator/KoukiUchiyama Kouki Uchiyama]] as Phillip, [[Creator/MikakoKomatsu Mikako Komatsu]] as Akiko Narumi, and [[Creator/MakotoFurukawa Makoto Furukawa]] as Ryu Terui.

* AdaptationalAttractiveness: Masaki Sato's art style gives the core casts of ''W'' this effect.

* TheOtherDarrin: The upcoming ''Fuuto PI'' anime adaptation will have the core casts be voiced by voice actors as opposed to their original actors from the TV series.
* SequelInAnotherMedium: The manga/anime Fuuto Detectives picks up some time after the OOO crossover movie.

* TheOtherDarrin: The upcoming ''Fuuto PI'' anime adaptation will have the core casts be voiced by voice actors as opposed to their original actors from the TV series

* BonusEpisode: Two Hyper Battle DVDs, ''[[Recap/KamenRiderDoubleDonburisAlphaFarewellBelovedRecipe Kamen Rider W: Donburi's α/Farewell Beloved Recipe]]'' and ''[[Recap/KamenRiderDoubleDVDGaiaMemoryEncyclopedia Kamen Rider W DVD: Gaia Memory Encyclopedia]]'', was released with an issue of Televi-Kun Magazine.

* InMemoriam: The ''S.I.C. Hero Saga'' novel ''Playback'', which covers this series, is a tribute to Creator/ShotaroIshinomori, featuring an AlternateUniverse version of the franchise's creator being guided by Philip as he learns what has become of his work.

** There also was an Isaka in ''Series/KamenRiderBlade''.

* OldShame: While he doesn't regret being on the show, Masaki Suda rarely talks about it and has been reluctant to reprise his role because he was TypeCast as feminine or genius characters following it, though he seems to have had a change of heart recently regarding this. In a 2017 magazine interview alongside his former co-star, he wished to be part of a MilestoneCelebration ReunionShow and it's been implied that his agency is the main reason for his lack of reappearance in the franchise.

* StarMakingRole: It could be argued that Philip was this for Masaki Suda.
* WhatCouldHaveBeen: [[spoiler:"The O Chain" storyline has Shroud mention [=CycloneAccel=] Xtreme, and we even get an ImagineSpot-style image of it, but it doesn't happen and probably never will because it would involve breaking up Shotaro and Philip's partnership as well as fighting with hatred rather than compassion, two things Ryu refuses to do.]]
** [[spoiler: Though we did get [[FanNickname CAX]] in ''VideoGame/KamenRiderClimaxHeroes OOO''.]]

** Was the Taboo Dopant inspired by Music/TheBlackEyedPeas?
*** A pity then, that the W isn't for will.i.am...

*** [[VisualNovel/HigurashiWhenTheyCry Sonozaki]] you say? As an added bonus, Wakana was in a live-action adaptation thereof as Mion.

** The client in episode 49 wishes to see his sister [[Series/KamenRiderRyuki Yui]] rescued. They're both someone's sister and in need of rescue constantly, but then again that's kind of a staple female role on Franchise/KamenRider.

* ActorAllusion: Aya Sugimoto, best known as [[Series/PrettyGuardianSailorMoon Queen Beryl]], appears in TheMovie ''Double Forever: A to Z'' as a Maria S Cran'''berry'''.

* Episodes 21-22 feature Creator/AyumiKinoshita as [[Series/TokusouSentaiDekaranger a police officer]] [[Anime/YuGiOh5Ds obsessed with revenge]].

* Episodes 21-22 feature [[Creator/AyumiKinoshita]] as [[Series/TokusouSentaiDekaranger a police officer]] [[Anime/YuGiOh5Ds obsessed with revenge]].

** Also in ''Double Forever'', Elizabeth manages to recover the T2 '''A'''ccel, '''K'''ey, and '''B'''ird Memories, a nod to the fact that her and Queen's actresses are members of the girl group [=AKB48=].

* ActorExistenceFailure: Minoru Tanaka, who played the villain of the ''Kamen Rider Accel'' DTV movie, committed suicide four days after the movie was released.
* CastingGag: The boy who Shotaro helps (and teaches the way of being hard-boiled) in the last episode is played by the same actor who played preteen Shotaro in the first episode flashback. He also plays Shotaro again in a small part of Movie War Core in the Skull section.

* {{Defictionalization}}: Queen and Elizabeth are played by two members of idol group [=AKB48=], and when they released their joint single "Love♡Wars", the Liar Dopant arc had them appear on an American Idol-esque contest (Fuuuuuutic Idol) performing the song in order to win a major label release.
* ExecutiveMeddling: {{Averted}}; the show's staff said that there was incredible pressure from Toei to make Double's primary color red (which is viewed as a heroic color in Japan, and is the reason the LawOfChromaticSuperiority applies not only to [[Series/KamenRiderKuuga several]] [[Series/KamenRiderRyuki previous]] [[Series/KamenRiderKabuto Kamen]] [[Series/KamenRiderDenO Riders]] but to Franchise/SuperSentai as well). They apparently had to fight long and hard to avoid this, and only managed to get black and green as Double's default form by citing [[Series/KamenRider Riders 1 and 2]] as their inspiration.

** One guest in "The F Afterglow" is an ex-thief named Fuyumi Aso, which means she may have relatives [[Series/KamenRiderKiva in another parallel world]].
*** Make that [[Film/KamenRiderZO TWO parallel worlds]].

* OldShame: While he doesn't regret being on the show, Masaki Suda rarely talks about it and has been reluctant to reprise his role because he was TypeCast as feminine or genius characters following it, though he seems to have had a change of heart recently regarding this. In a 2017 magazine interview alongside his former co-star, he wished to be part of a "10 Years Later" special and it's been implied that his agency is the main reason for his lack of reappearance in the franchise.
* PromotedFanboy: Renn Kiriyama was a fan of Series/KamenRiderBlack as a child.

** [[spoiler: Though we did get [[FanNickname CAX]] in Kamen Rider Climax Heroes [[Series/KamenRiderOOO OOO]].]]

* OldShame: While he doesn't regret being on the show, Masaki Suda rarely talks about it and has been reluctant to reprise his role because he was TypeCast as feminine or genius characters following it, though he seems to have had a change of heart recently regarding this. In a 2017 magazine interview alongside his former co-star, he wished to be part of a "10 Years Later" special. It's implied that his agency is the reason for his lack of reappearance in the franchise.

** Was the Taboo Dopant inspired by the BlackEyedPeas?

* OldShame: While he doesn't regret being on the show, Masaki Suda rarely talks about it and has been reluctant to reprise his role because he was TypeCast as feminine or genius characters following it.

* [[AuthorExistenceFailure Actor Existence Failure]]: Minoru Tanaka committed suicide after the film was released.

* DawsonCasting: Mitsuru Matsuoka was ''40'' when he played Katsumi, who appears to be in his early to mid-20s based off the information given. Possibly justified since storywise he was [[spoiler:growing up using an artificial chemical.]]

** Surprisingly, Shotaro, GenreSavvy that he is, didn't freak out at the fact that his partner's true name is [[spoiler: [[Manga/DeathNote Raito]] [[VisualNovel/HigurashiWhenTheyCry Sonozaki]]]].