History Trivia / ShinKamenRider2023

** Yutaka Takenouchi, previously [[BigGood Hideki Akasaka]] of ''Film/ShinGodzilla'' and a similarly-high-up government official in ''Film/ShinUltraman'', also figures here as a government official investigating SHOCKER. The additional twist, however, is that he is in fact this film's version of [[spoiler:Tobei Tachibana, who works with Jiro Taki, this film's version of Kazuya Taki (himself portrayed by Takumi Saitoh, who recently served as protagonist Shinji Kaminaga/Ultraman in ''Film/ShinUltraman'')]].

** A behind-the-scenes documentary aired on {{Creator/NHK}} notably featured a choreographed fight scene between the Double Riders and [[spoiler: SHOCKER Riders]] that took place at an outdoor industrial area, a sequence that was entirely cut from the final film and replaced with a completely altered, and primarily CGI-based, battle in the tunnel leading to [[spoiler: Ichiro's throne.]] Strangely enough, the [[spoiler: SHOCKER Rider]] boss fight in the ''SD Shin Kamen Rider Rumble'' spin-off game appears to be based on the cut sequence, though given the nature of the game as a BeatEmUp with no motorcycle gameplay, it makes sense from a developer standpoint.

** A behind-the-scenes documentary aired on {{Creator/NHK}} notably featured a choreographed fight scene between the Double Riders and SHOCKER Riders that took place at an outdoor industrial area, a sequence that was entirely cut from the final film and replaced with a completely altered, and primarily CGI-based, battle in the tunnel leading to Ichiro's throne. Strangely enough, the SHOCKER Rider boss fight in the ''SD Shin Kamen Rider Rumble'' spin-off game appears to be based on the cut sequence, though given the nature of the game as a BeatEmUp with no motorcycle gameplay, it makes sense from a developer standpoint.

** A behind-the-scenes documentary aired on {{Creator/NHK}} notably featured a choreographed fight scene between the Double Riders and SHOCKER Riders that took place at an outdoor industrial area, a sequence that was entirely cut from the final film and replaced with a completely altered, and primarily CGI-based, battle in the tunnel leading to Ichiro's throne. Strangely enough, the SHOCKER Rider boss fight in the ''SD Shin Kamen Rider Rumble'' spin-off game appears to be based on the cut sequence.

** A behind-the-scenes documentary aired on {{Creator/NHK}} notably featured a choreographed fight scene between the Double Riders and SHOCKER Riders that took place at an outdoor industrial area, a sequence that was entirely cut from the final film and replaced with a completely altered, and primarily CGI-based, battle in the tunnel leading to Ichiro's throne. Strangely enough, the SHOCKER Rider boss fight in the ''SD Shin Kamen Rider Rumble'' appears to be based on the cut sequence.

** A behind-the-scenes documentary aired on Creator/NHK notably featured a choreographed fight scene between the Double Riders and SHOCKER Riders that took place at an outdoor industrial area, a sequence that was entirely cut from the final film and replaced with a completely altered, and primarily CGI-based, battle in the tunnel leading to Ichiro's throne. Strangely enough, the SHOCKER Rider boss fight in the ''SD Shin Kamen Rider Rumble'' appears to be based on the cut sequence.

* WhatCouldHaveBeen: The ''official Shin Kamen Rider Design Book'' show the many designs considered for the characters in the movie. For example, the Kamen Riders went through lots of redesigns that looked pretty different than how they looked originally (with some akin to the designs from ''Film/KamenRiderTheFirst''), but there's a special mention for [[spoiler: Kamen Rider No.0/Ichiro Midorikawa, who instead of a Kamen Rider, was going to be an evil version of [[https://twitter.com/anon54980/status/1650761697693667330?t=TIJpAFLEO2xKLl-iTcs35A&s=19 Inazuman]] in the same way K from ''Series/RobotDetective'' became a member of SHOCKER.]]

* WhatCouldHaveBeen: The official ''Shin Kamen Rider'' design books show the many designs cobsidered for the characters in the movie. For example, the Kamen Riders went through lots of redesigns that looked pretty different than how they looked originally (with some akin to the designs from ''Film/KamenRiderTheFirst''), but there's a special mention for [[spoiler: Kamen Rider No.0/Ichiro Midorikawa, who instead of a Kamen Rider, was going to be an evil version of [[https://twitter.com/anon54980/status/1650761697693667330?t=TIJpAFLEO2xKLl-iTcs35A&s=19 Inazuman]] in the same way K from ''Series/RobotDetective'' became a member of SHOCKER.]]

* WhatCouldHaveBeen: the official Shin Kamen Rider design books show the many designs the characters in the movie could have gotten, for example the Kamen Riders went through lots of redesigns that looked pretty different than how they looked originally (with some akin to the designs from Film/KamenRiderTheFirst), but there's a special mention for [[spoiler: Kamen Rider No.0/Ichiro Midorikawa, who instead of a Kamen Rider, was going to be an evil version of [[https://twitter.com/anon54980/status/1650761697693667330?t=TIJpAFLEO2xKLl-iTcs35A&s=19 Inazuman]] in the same way K from Series/RobotDetective became a member of Shocker.]]

** Shinya Tsukamoto, who previously appeared as a university professor in ''Film/ShinGodzilla'' (also co-directed by Anno), appears in this film to portray Dr. Hiroshi Midorikawa, Ruriko's father. Mikako Ichikawa (also of ''Shin Gozilla''), in turn, [[spoiler:portrays Shoko Midorikawa, Ruriko and Ichiro's mother]].

** Shinya Tsukamoto, who previously appeared as a university professor in ''Film/ShinGodzilla'' (also directed by Anno), appears in this film to portray Dr. Hiroshi Midorikawa, Ruriko's father. Mikako Ichikawa (also of ''Shin Gozilla''), in turn, [[spoiler:portrays Shoko Midorikawa, Ruriko and Ichiro's mother]].

** Nanase Nishino, an alumna of Music/Nogizaka46 (and is probably known outside Japan together with her bandmates for [[https://youtu.be/8YvgUouPio0 the "Mouse" computer ad]]) plays the TragicVillain Bee Woman/Wasp Aug.

* PlayingAgainstType: Mirai Moriyama, whose filmography tends to be largely-sympathetic heroes (not to mention voicing {{UsefulNotes/Jesus}} in ''Manga/SaintYoungMen''), serves in the role of [[spoiler:[[BigBad the Great Leader]]]].

* PlayingAgainstType: Mirai Moriyama, whose filmography tends to be largely-sympathetic heroes (not to mention voicing {{UsefulNotes/Jesus}} in ''Manga/SaintYoungMen'', serves in the role of [[spoiler:[[BigBad the Great Leader]]]].

* PlayingAgainstType: Mirai Moriyama, whose filmography tends to be largely-sympathetic heroes (not to mention voicing UsefulNotes/Jesus in ''Manga/SaintYoungMen'', serves in the role of [[spoiler:[[BigBad the Great Leader]]]].

* PromotedFanboy: It cannot be understated how much of a ''Kamen Rider'' fanboy Creator/HideakiAnno is. He cosplayed as Rider 1 not just for conventions in the 80’s, but in the lead up to his own wedding. His wife has also mentioned that he created his own unit of measurement for their home furniture based on the average size of a Rider toy.

** Shinya Tsukamoto, who previously appeared as a university professor in ''Film/ShinGodzilla'' (also directed by Anno), appears in this film to portray Dr. Hiroshi Midorikawa, Ruriko's father. Mikako Ichikawa (also of ''Shin Gozilla''), in turn, [[spoiler:portrays Mrs. Midorikawa, Ruriko and Ichiro's mother]].

* ProductionPosse:
** Shinya Tsukamoto, who previously appeared in ''Film/ShinGodzilla'' (also directed by Anno), appears in this film to portray Dr. Hiroshi Midorikawa, Ruriko's father. Mikako Ichikawa (also of ''Shin Gozilla''), in turn, [[spoiler:portrays Mrs. Midorikawa, Ruriko and Ichiro's mother]].

** Yutaka Takenouchi, [[BigGood Hideki Akasaka]] of ''Film/ShinGodzilla'' and a similarly-high-up government official in ''Film/ShinUltraman'', also figures here as a government official investigating SHOCKER. The additional twist, however, is that he is in fact this film's version of [[spoiler:Tobei Tachibana, who works with Jiro Taki, this film's version of Kazuya Taki (himself portrayed by Takumi Saitoh, who recently served as protagonist Shinji Kaminaga/Ultraman in ''Film/ShinUltraman'')]].

** Shinya Tsukamoto, who previously appeared in ''Film/ShinGodzilla'' (also directed by Anno), appears in this film to portray Dr. Hiroshi Midorikawa, Ruriko's father.
** Masami Nagasawa from ''Film/ShinUltraman'' is cast in this film as SHOCKER mutant Sasori Aug.

** As with the previous live-action entries in the ''Shin Heroes'' franchise, some of the crew returns including Anno (who returns as director after sitting out of ''Film/ShinUltraman'' in the role) and VFX company Creator/{{Shirogumi}}.

** As with the previous live-action entries in the ''Shin Heroes'' franchise, some of the crew returns including Hideaki Anno (who now takes over as director) and VFX company Creator/{{Shirogumi}}.

** Shinya Tsukamoto, who previously appeared in ''Film/ShinGodzilla'' (also directed by Anno), appears in this film to portray a secondary character.