History Series / KikaiSentaiZenkaiger

The series is then followed by ''Series/AvataroSentaiDonbrothers'', the first semi-sequel Sentai entry in the franchise since ''Series/TaiyouSentaiSunVulcan Sun Vulcan'' (which is the semi-sequel to ''Series/DenshiSentaiDenziman'').

The series is then followed by ''Series/AvataroSentaiDonbrothers'', the first semi-sequel Sentai entry in the franchise since ''TaiyouSentaiSunVulcan Sun Vulcan'' (which is the semi-sequel to ''Series/DenshiSentaiDenziman).

In a franchise first since ''Series/DenshiSentaiDenziman'' and ''Series/TaiyouSentaiSunVulcan'', ''Zenkaiger'' is followed up by a semi-sequel series, ''Series/AvataroSentaiDonbrothers''.

* MiniDressOfPower: Notably averted in Zenkai Magine's case, and the first case of this aversion since ''Series/TokusouSentaiDekaranger'', instead opting for a LeotardOfPower design, last seen with ''Series/ChoushinseiFlashman''.

* Bookends: The first and last episodes both have Kaito trying to bungee jump off of the Tokyo Sky Tree.

* BirthdayEpidode: Kaito's 21st birthday happens in episode 39.

*** Gear #44 - ''Series/MashinSentaiKiramager'': Grants its user the core Mashins to use as AttackDrones.

In a franchise first since ''Series/DenshiSentaiDenziman'' and ''Series/TaiyouSentaiSunVulcan'', ''Zenkaiger'' is followed up by a semi-sequel series, ''Series/AvataroSentaiDonBrothers''.

* AbsenteeActor: Creator/TatsuhisaSuzuki retired from production in early August 2021, leading to Gege being reduced to TheVoiceless from Episodes 22 to 24. His lines were either filled by the other members of the Tozitend or {{Stock Audio Clip}}s. [[TheOtherDarrin Masaya Fukunishi]] eventually took over for Gege starting from Episode 25.

* ''Twokaizer x Gokaiger: The June Bride is a Tanuki'', an upcoming crossover web-exclusive spin-off with ''Series/KaizokuSentaiGokaiger'' streaming on Toei Tokusatsu Fan Club on June 5, 2022.

** Episode 15 has Great Retro Wald strike a move that is very similar to ''Franchise/{{Ultraman}}'' - the Spacium Ray!

When the Tozitend Dynasty finally launch their full-scale invasion of the human world, [[RagtagGroupOfMisfits Kaito teams up with four misfit Kikainoids]] to defend the peace of his home. With the technology left behind by his parents, which channels the powers of the forty-four ''Super Sentai'' teams that came before, Kaito and his friends transform into the 45th Super Sentai team: the Kikai Sentai Zenkaiger!

The ''Super Sentai'' exist in multiple [[AlternateUniverse parallel worlds]]. One of these worlds is Kikaitopia, a land of RidiculouslyHumanRobots called Kikainoids, long under the tyranny of the [[TheEmpire Kikaitopia Dynasty Tozitend]], who seek to seal all the other worlds in order to rule over TheMultiverse, with an Earth that has somehow [[WhenDimensionsCollide merged with a part of Kikaitopia]] being their last target. To prevent this and save the worlds already dominated by the Tozitend, Kaito Goshikida, a young human whose parents went missing after discovering the multiverse, teams up with four rebelling Kikainoids to face them. Harnessing the powers of all 44 previous ''Super Sentai'', they transform into the 45th team, Kikai Sentai Zenkaiger, fighting at full-force, full-throttle!

--->'''Flint:''' The Engineering Power! [[note]]"''Hatsumei no'' Power!"[[/note]] Twokai Flint!

---> '''Kaito''': The [[Series/HimitsuSentaiGorenger Secret]] Power([[PowerUp -Up]])![[note]] "''Himitsu no'' Power(-Up)!"[[/note]] (Super) Zenkaizer!
---> '''Juran''': The [[Series/KyoryuSentaiZyuranger Dinosaur]] Power![[note]] "''Kyōryū'' Power!"[[/note]] Zenkai Juran!
---> '''Gaon''': The [[Series/HyakujuuSentaiGaoranger Hundred Beasts]] Power![[note]] "''Hyakujū'' Power!"[[/note]] Zenkai Gaon!
---> '''Magine''': The [[Series/MahouSentaiMagiranger Magical]] Power![[note]] "''Mahō'' Power!"[[/note]] Zenkai Magine!
---> '''Vroon''': The [[Series/GoGoSentaiBoukenger Rumbling]] Power![[note]] "''[=GōGō=]'' Power!"[[/note]] Zenkai Vroon!
---> '''Kaito''': The five warriors, assembled![[note]]"Gōnin sorotte!"[[/note]]
---> '''All''': Kikai Sentai, Zenkaiger!

---> '''Stacy''': The [[DarkIsEvil Dark]] Power![[note]] "''Ankoku no'' Power!"[[/note]] Stacaesar!
---> '''Hakaizer''': The [[{{Robot}} Machine]] Power![[note]] "''Kikai no'' Power!"[[/note]] Hakaizer!

---> '''Zocks''': The [[Series/KaizokuSentaiGokaiger Pirate]] Power(-Up)![[note]] "''Kaizoku no'' Power(-Up)!"[[/note]] (Super) Twokaizer!\\

*** A stage show in Tokyo Dome City also gives Flint [[https://youtu.be/FbRn6Gi0fVI?t=1722 a Ranger form and a roll call to boot]].
---->'''Flint:''' The Engineering Power! [[note]]"''Hatsumei no'' Power!"[[/note]] Twokai Flint!

!!The Zenkaigers are:

* '''Kaito Goshikida/[[red:Z]][[gold:e]][[blue:n]]kaizer''' (White/[[AllYourPowersCombined All]] [[RainbowMotif Colors]][[note]]His ColorMotif is commonly represented as a ''rainbow''.[[/note]]): The TokenHuman and TheLeader of the Zenkaigers who aims to be the "World's First" at everything. His parents invented the Zenkaiger tech before they went missing. His form is based on the [[Series/HimitsuSentaiGorenger Varidorin aircraft as a Gorenger]]. As '''[[green: Super]] [[red:Z]][[gold:e]][[blue:n]]kaizer''', his armor is based on [[Series/KyoryuSentaiZyuranger Dragon Caesar]].
* '''Juran/[[red:Zenkai Juran]]''' (Red): The oldest of the Kikainoids who thinks he's a CoolOldGuy but is actually more of a GrumpyOldMan who loves parties. His form is based on [[Series/KyoryuSentaiZyuranger Daizyuzin]].
* '''Gaon/[[gold:Zenkai Gaon]]''' (Yellow): An AnimalLover Kikainoid who is the TeamChef. He also has an equally soft spot for humans and doesn't get along with the Kikainoids; as such he acts like a {{Jerkass}} to other mechanical lifeforms. His form is based on [[Series/HyakujuuSentaiGaoranger GaoKing]].
* '''Magine/[[pink:Zenkai Magine]]''' (Pink): The [[TheSmurfettePrinciple only female]] of the team. She comes off as a ShrinkingViolet but in actuality, she's a brazen fantasy {{Otaku}}. Her form is based on [[Series/MahouSentaiMagiranger MagiKing]].
* '''Vroon/[[blue:Zenkai Vroon]]''' (Blue): A ConstantlyCurious Kikainoid with the personality of a serious StudentCouncilPresident. He is also a NeatFreak. His form is based on [[Series/GoGoSentaiBoukenger DaiBouken]].
* '''Zocks Goldtsuiker/[[gold:Twokaizer]]''' (Gold): The SixthRanger. A HumanAlien and "[[SpacePirate World Plunderer]]"[[note]]"Kai-zoku/界賊", pirate("海賊/sea plunderer") but written with the kanji for "world" instead[[/note]] from the {{pirate}} world Kaizokutopia. His form is based on [[Series/KaizokuSentaiGokaiger GokaiOh as a Gokaiger]]. As '''[[red:Super]] [[gold:Twokaizer]]''', his armor is based on [[Series/MiraiSentaiTimeranger V-Rex]]. He is supported by his BadassFamily of siblings:
** '''Flint Goldtsuiker/[[gray:Twokai Flint]]''' (Silver): The GadgeteerGenius middle sister of the siblings. Normally supporting the team as part of MissionControl, she becomes a GuestStarPartyMember in the post-series LiveOnStage show. Being mostly a PaletteSwap of Twokaizer, her suit carries the same motif.
** Their youngest [[BalefulPolymorph twin brothers turned robots]]:
*** '''Cutanner Goldtsuiker/[[gold:Twokai]] [[red:Cutanner]]''' (Red; Gold as [=TwokaiOh=]): TheStoic older brother of the twins. His form is based on [[Series/SamuraiSentaiShinkenger ShinkenOh]].
*** '''Ricky Goldtsuiker/[[gray:Twokai]] [[blue:Ricky]]''' (Blue; Silver as [=TwokaiOh=]): The HotBlooded younger brother of the twins. His form is based on [[Series/ChourikiSentaiOhranger Ohranger Robo]].
* '''Stacy/[[purple:Stacaesar]]''' (Purple): A [[HalfHumanHybrid half-human Kikainoid]] and son of Tozitend general Barashitara. Originally serving them as their [[ThePsychoRangers Psycho Ranger]], he joins the heroes as an EleventhHourRanger in the final battle. His form is based on [[Series/BattleFeverJ Battle Japan]].
----

** '''Flint Goldtsuiker/[[gray:Twokai Flint]]''' (Silver): The GadgeteerGenius middle sister of the siblings. Normally supporting the team as part of MissionControl, she becomes a GuestStarPartyMember in the post-series LiveOnStage show.

** '''Flint Goldtsuiker/[[gray:Twokai Flint]]''' (Silver): The GadgeteerGenius middle sister of the siblings. Normally suppoting the team as part of MissionControl, she becomes a GuestStarPartyMember in the post-series LiveOnStage show.

* '''Zocks Goldtsuiker/[[gold:Twokaizer]]''' (Gold): The SixthRanger. A HumanAlien and "[[SpacePirate World Plunderer]]"[[note]]"Kai-zoku/界賊", pirate("海賊/sea plunderer") but written with the kanji for "world" instead[[/note]] from the {{pirate}} world Kaizokutopia. His form is based on [[Series/KaizokuSentaiGokaiger GokaiOh as a Gokaiger]]. As '''[[red:Super]] [[gold:Twokaizer]]''', his armor is based on [[Series/MiraiSentaiTimeranger V-Rex]]. He is supported by his GadgeteerGenius younger sister Flint and their youngest [[BalefulPolymorph twin brothers turned robots]]:
** '''Cutanner Goldtsuiker/[[gold:Twokai]] [[red:Cutanner]]''' (Red; Gold as [=TwokaiOh=]): TheStoic older brother of the twins. His form is based on [[Series/SamuraiSentaiShinkenger ShinkenOh]].
** '''Ricky Goldtsuiker/[[gray:Twokai]] [[blue:Ricky]]''' (Blue; Silver as [=TwokaiOh=]): The HotBlooded younger brother of the twins. His form is based on [[Series/ChourikiSentaiOhranger Ohranger Robo]].

In a franchise first since ''Series/DenshiSentaiDenziman'' and ''Series/TaiyouSentaiSunVulcan'', ''Zenkaiger'' is followed up by a sequel series, ''Series/AvataroSentaiDonBrothers''.