* ActorAllusion: [[CrowningMomentOfFunny The scene with Jiro and Otoya in the hospital]], with [[http://www.youtube.com/watch?v=i2Lce2n2F8o Jiro begrudgingly assisting 'patient' Otoya]], is actually a parody of Zanki's first appearance in Series/KamenRiderHibiki, where he assists a hospitalised Asumu a little more willingly. Earlier in ep. 9, Jiro's massive aversion to Yuri's horrible violin playing is an interesting parallel to Zanki being nearly killed by another string-based Oni, [[spoiler:Shuki]].
** Speaking of which, Kenji Matsuda's been in a wolf-themed outfit before. Not Zanki, [[TheMovie Touki]].
** Also we have Otoya dancing to ''[[http://www.youtube.com/watch?v=ZsF0afU6CPU Zenryaku Michi no Ueyori]]'', after his actor Takeda Kouhei performed [[http://www.youtube.com/watch?v=MNkXk8AnUks a cover version as part of the boy band PureBoys]] (which also provided Nago's actor).
** And Yuria Haga in the role of Mio [[spoiler:takes a fatal Rider Kick from one Rider to defend another one, just like she did in Series/KamenRiderFaiz. Interestingly, the roles of the Riders are inverted in each season.]]
** Crosses into TakeThat with Rook, as the IXA system's ''henshin'' requires depressing the IXA Knuckle just like the Sazer Knuckles of ''Gransazer''. Not only was Rook's actor previously Sazer Tawlon, [[spoiler:but he gets finished off by IXA eventually.]] It's worth noting here that Yuri's henshin pose seems to be modelled on that of the Gransazers' Flame Tribe.
** TheMovie has physical cameos by the voice actors of [[Series/KamenRiderDenO the Taros]]; to make sure you notice, each of them delivers their character's CatchPhrase. [[spoiler:If you missed it, MasakiTerasoma (Kintaros) is the teacher, KojiYusa (Urataros) is the chess player, Creator/KenichiSuzumura (Ryutaros) is the soccer goalie and Creator/ToshihikoSeki (Momotaros) is Officer Sanjou in 1986]].
** The Ladybug Fangire in #19-20 is designed with a skull-dome head. The voice actor's best known role? [[Manga/DragonBall Freeza.]]
* TheDanza: Keisuke Kato as Keisuke Nago.
* DawsonCasting: ''Averted''. Series/KamenRiderFaiz may have been 5 years earlier, but Yuria Haga was born in 1987, [[FridgeBrilliance which realistically places Mio's birth after the events of '86.]]
* HeyItsThatGuy
** Franchise/KamenRider alumnus, by now a staple in its own right:
*** Tetsuya Sawaki [[spoiler:AK the real Tsugami Shoichi]] from ''Series/KamenRiderAgito'' appears in ep. 27.
*** Mio's actress, Yuria Haga, played Mari Sonada in ''Series/KamenRiderFaiz''.
*** Jiro and Bishop's actor were in ''Series/KamenRiderHibiki'' as Zanki and all Doujis respectively.
*** Ramon once [[Series/KamenRiderDenO accidentally wished his whole soccer team dead]].
*** And a few of the Fangire were from previous shows--Frog Fangire was Murakami from Faiz, and Rhino Fangire was Alternative Zero from ''Series/KamenRiderRyuki''. The Octopus Fangire was Midori Takizawa/Masako Umemiya in ''Series/KamenRiderHibiki''. The Warthog Fangire was previously [[Series/PrettyGuardianSailorMoon Kunzite]] and [[Series/KamenRiderBlade the Girafa Undead.]]
*** All four of the [[Series/KamenRiderDenO Taros']] voice actors appear in TheMovie as humans, delivering their character's CatchPhrase so you recognize them: Officer Sanjou/the Zebra Fangire is Creator/ToshihikoSeki (Momotaros), hence the PunnyName[[note]]Otoya: What's your name? Cop: Me? Sanjou. (Ore? Sanjou.)[[/note]]. The teacher in the beginning is MasakiTerasoma (Kintaros) and can be seen erasing "Make you cry" (written in yellow chalk) off the chalkboard. The soccer club goalie is Creator/KenichiSuzumura (Ryutaros), and says "Mind if I stop you? Can't hear ya!" before Wataru takes a shot. The shogi club member who beats Wataru is KojiYusa (Urataros), who says "Mind if I pack you in?" as he wins. Further, one of the officers attempting to arrest the Kurenais back in 1986 is long-time Franchise/KamenRider suit actor Seiji Takaiwa, and the female officer telling Otoya to get out of the police car is Rina Akiyama (Naomi).
** Rook's actor was last seen in ''[[Series/ChouSeiShinSeries Chou Sei Shin Gransazer]]'' as Sazer Tawlon.
** Taiga's actor was Dan in ''{{GARO}}''. And he was in TheMovie as a completely different character.
** Megumi had a one-time role in ''Series/GoGoSentaiBoukenger'' as a {{Kaitou}}, [[spoiler:later revealed to be Kaguyahime herself.]]
** Shizuka's grown quite a bit after her [[Series/PrettyGuardianSailorMoon Sailor Luna]] days.
* HeyItsThatVoice: [[Creator/TomokazuSugita Kiyomasa Kato]] is Kivat and [[Creator/AkiraIshida Athrun Zala]] is Tatsulot.
** And Creator/NorioWakamoto as Rey Kivat and Arc Kivat/Mecha Kivat in TheMovie, along with ''[[Series/KamenRiderDenO all four Taros]]'' in various roles.
** Ladybug Fangire brings the recommended daily allowance of [[DragonBall Freeza]] in one episode.
* {{Jossed}}: Megumi's father is MIA, though some assumed it to be [[spoiler:Jiro, which eventually became false as he's shown being sealed as an Arms Monster well after she leaves him]].
* NamesTheSame: There was another Shima back in ''Series/KamenRiderBlade'', also a mentor-type role [[spoiler:who turns out to be one of the monsters of the year.]]
** Series/KamenRiderRyuki had an escaped convict Rider named Takeshi. Kiva had another escaped convict Rider in TheMovie named Takashi. Close enough.
** Does Shima's [[Creator/BlueSkyStudios BlueSky]] group make CGI animated kids' movies for revenue?
* TalkingToHimself: Kiva has both played this straight and subverted it: In the main series, Kivat-Bat III and his father, Kivat-Bat II, are both voiced by Creator/TomokazuSugita, and the two Kivats were reunited near the end of the series. However, while NorioWakamoto voiced both Arc Kivat and Rey Kivat in TheMovie, the two never interacted with each other.