* BonusEpisode: ''[[Recap/SamuraiSentaiShinkengerSpecialDVDTheLightSamuraisSurpriseTransformation Samurai Sentai Shinkenger Special DVD: The Light Samurai's Surprise Transformation]]'' was released with an issue of TV Magazine.
* EnforcedMethodActing: Takeru's actor, Tori Matsuzaka, has stated that he was the only one of the main cast told beforehand that [[spoiler:Takeru is a BodyDouble for Kaoru]] in order to achieve realistic reactions from the others when TheReveal was filmed. Infact, the twist had been planned from the beginning, and both Matsuzaka and Gorou Ibuki (Jii) were informed by the filming of Act 36-37, whilst the other Shinkengers only found out when they read the script for Act 44. Runa Natsui (Kaoru) only found out after passing her audition.
* FakeNationality: While Richard Brown was implied to be American, his actor, John Kaminari, is actually [[FakeAmerican Italian]] and can speak Japanese fairly well. His strange [[JustAStupidAccent accent]] was meant to make him sound like a [[FunnyForeigner strange foreigner]]. As well, the fact he's humble, earnest, perfectly willing and eager to adapt to another country's customs and ideals, and ''obsessed'' with learning the path of the samurai means he can't easily be slotted as one of the two {{Eagleland}}er base types; he's 100% PromotedFanboy who just happens to be from elsewhere.
* FanNickname:
** "[[VideoGame/SuperRobotWars ShinkenZengar]]". That should tell you a lot about Takeru.
** "''Neko Tono''" [[note]]Lord Kitty[[/note]]
** Ryunosuke is "Marijuana Man": for people who don't initially recognize the Kanji for water and confuse his visor for that of a cannabis leaf.
*** "Aibaranger", due to the popularity of his actor, Aiba Hiroki.
* NamesTheSame: Takeru shares his name with another character who's - Surprise! - also a ''Super Sentai'' Red Ranger, [[Series/HikariSentaiMaskman Red Mask]].
** [[spoiler:It's a bit of a stretch, but there's been ''two'' characters from ''Franchise/KamenRider'' named Kaoru. Both ''men''. And [[Series/KamenRiderKuuga certified]] [[Series/KamenRiderAgito badasses]].]]
** For all we know, Hikoma could he be related to [[spoiler:[[Series/KamenRiderKabuto the man who walks the path of Heaven]]]] ([[spoiler:Tendou]]'s real family name was Kusakabe, while his current name comes from [[spoiler:his grandmother]] adopting him).
** Apparently Mako's stuck with the role of [=ShinkenPink=] because the only other Shiraishi descendant [[Manga/LuckyStar is busy co-hosting Lucky Channel.]]
*** Her family name also belonged to [[Series/BattleFeverJ the first Battle Cossack]]. Thank God she survived her series, unlike Kensaku.
*** Even better, ''an actual Shiraishi Mako'' was a member of [[http://en.wikipedia.org/wiki/Onyanko_Club Onyanko Club]] (which may sound familiar to viewers of ''Series/KamenRiderKiva'')
*** Kobayashi's next series for Toei after Shinkenger was ''Series/KamenRiderOOO'', which features a main character called Shiraishi Chiyoko ... any relation?
* NoExportForYou: The series wasn't dubbed in Korea because of its heavy Japanese themes. A dub of ''Series/HyakujuuSentaiGaoranger'' was broadcast instead.
** And yet ''Series/KamenRiderDecade'' was dubbed there... complete with ''Shinkenger'' crossover, where they're referred to as [[CompletelyDifferentTitle Power Rangers Blade Force]]. Which makes it an example of MarthDebutedInSmashBros.
** Averted in America, where ''Series/PowerRangersRPM'', based on ''Shinkenger''[='=]s predecessor ''Series/EngineSentaiGoOnger'', was supposed to be the last series - until Saban bought the ''PR'' franchise back from Disney and began work on adapting ''Shinkenger''.
* RoleReprise: Hironori Miyata once again reprises his role as the narrator, having previously narrated ''Series/NinpuuSentaiHurricaneger'' seven years earlier.
* StarMakingRole: This is the series that boosted Tori Matsuzaka's popularity.
* TheWikiRule: Covered as part of [[http://powerrangers.wikia.com/wiki/ RangerWiki]], and as an individual series on the [[http://shinkenger.wikia.com/wiki/ Shinkenger Wiki]].
* WhatCouldHaveBeen
** Initially, Blue and Pink were to have the "Heaven" and "Water" kanji symbols respectively. This was switched to balance their Origami, Blue being a Dragon and Pink being a Sea Turtle.
** Before settling on "Wood", Shinken Green's kanji was to be "Mountain" (山).
** The kanji for "Light" was considered for one of the original five Shinkengers before being assigned to Shinken Gold.
** In addition, it was considered to have Shinken Gold be a ninja, however, writer Yasuko Kobayashi shown reluctance to this idea and opted to have Gold be distinguished by a sushi motif instead. Had the ninja concept stuck, it would have made for an IronicEcho of ''Series/PowerRangersNinjaStorm'' (''Series/NinpuuSentaiHurricaneger)'', which translated SixthRanger Shurikenger into the Green Samurai Ranger.
** Ryota Ozawa auditioned for the role of Shinken Red; he would be cast as [[Series/KaizokuSentaiGokaiger Gokai Red]] two years later. Yui Koike also auditioned for ''Shinkenger'' and would later be cast as Gokai Pink.
** It was considered to have Tori Matsuzaka [[ActingForTwo play a second role]], potentially another Shinken Red. Kobayashi dropped this, deeming it too similar to Masaru Nagai playing both Tatsuya Asami and Captain Ryuya (Time Red) in ''Series/MiraiSentaiTimeranger''.
** Juzo Fuwa was not initially planned to have a human form until it was deemed appropriate to cast a face actor for Shinken Red's rival swordsman.
** For the FinalBattle with Dokoku Chimatsuri, it was suggested that, being a Sentai BigBad, he should [[OneWingedAngel change his form]] for the BehemothBattle. However, this was not followed through as director Shojiro Nakazawa was satisfied with his default appearance.
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