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Series / Kamen Rider Zi-O

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Go beyond space-time!
The legacy of the Heisei Kamen Riders has carried on throughout the era.
Once their power has been passed on, a new legend begins.
Rejoice! For the birth of the ultimate king!
— Opening narration, starting from episode 30

Kamen Rider Zi-O (仮面ライダージオウ) is the 2018-2019 entry in the Kamen Rider series, the twentieth and final entry in the franchise's Heisei era, and the twenty-ninth entry overall. It aired alongside Kaitou Sentai Lupinranger VS Keisatsu Sentai Patranger in the Super Hero Time block, followed by Four Week Continuous Super Sentai Strongest Battle, and later, Kishiryu Sentai Ryusoulger. It will be succeeded by Kamen Rider Zero-One, the first series in Reiwa era.

In the year 2068, fifty years into the future, the world is ruled by an Evil Overlord named Ōma Zi-O: a Kamen Rider who seized the powers of every Heisei Kamen Riders who came before him to become the "Overlord of Time" on the Day of Ōma. The only option left for the dwindling La Résistance is to send two of their members back in time to Set Right What Once Went Wrong by assassinating Ōma Zi-O before he can achieve his full power.


Arriving into the year 2018, they locate the younger version of Ōma Zi-O as described in their history books: an ordinary and naive eighteen-year old named Sōgo Tokiwa who childishly dreams of becoming "a king" that can bring happiness to the world. One of the Resistance members (Geiz Myōkōin, aka Kamen Rider Geiz) is insistent on completing the assassination, but the other (Tsukuyomi) begins to question if the pure-hearted Sōgo is really capable of growing up into the tyrannical Ōma Zi-O.

As Sōgo claims the power of Kamen Rider Zi-O and embarks on the road to ascension, the history of the Kamen Riders begins to distort as various parties aim to twist the future to their advantage. A mysterious group of time-travelers named the Time Jackers begin to steal the power of the Kamen Riders, creating their own Another Riders as candidates to usurp Ōma Zi-O as the Overlord of Time. A sycophantic "prophet" of Ōma Zi-O named Woz arrives from the future to ensure the ascension of his master as history dictates. And standing beside Sōgo are Tsukuyomi and Geiz, carefully watching his actions with a hand on their weapons. Will Sōgo create an unexpected destiny as "the most beloved and kind Overlord in history", or is he fated to become the ultimate evil?


Kamen Rider Zi-O's tie-in projects include:

  • Kamen Rider Zi-O: Supplementary Plans, a web video series on Toei's fan club site where characters break the Fourth Wall to discuss information that supplements the story and setting of the first 16 episodes. The episodes are included among the normal episode counts (designated "Episode [x].5").
  • Kamen Rider Heisei Generations FOREVER, the annual crossover movie teaming Zi-O with Kamen Rider Build.
  • A set of Rider Time bonus episodes exclusive to Toei's Toku Fan Club that feature some of the returning and original Riders that Zi-O encounters.
    • Rider Time: Shinobi, showing viewers a small glimpse into the hypothetical adventures of Shinobi.
    • Rider Time: Ryuki, written by veteran writer Toshiki Inoue, detailing Sōgo and Geiz aiding Shinji Kido and Ren Akiyama in stopping a new Rider War.

Not to be confused with its predecessor Kamen Rider ZO (which is actually pronounced "Zet-Oh" while this one is "ji-oh") or its distant relative Power Rangers Zeo.

For the Showa-era equivalents, see Birth of the 10th! Kamen Riders All Together!! and its manga adaptation, Kamen Rider Spirits. For the Super Sentai equivalent, see Kaizoku Sentai Gokaiger.

Recurring Kamen Rider tropes include:

  • Cool Bike: Both Zi-O and Geiz have the Ride Striker, which transforms from a stopwatch into a motorcycle.
  • Early-Bird Cameo: Zi-O first appeared in Kamen Rider Build: Be The One, when Build briefly crossed dimensions. The Cross-Z Ridewatch also appears in Build's finale, but Zi-O itself appears to ignore and Retcon this bit.
  • Henshin Hero
  • Monster of the Week: Another Riders, humans who use the power of prior Riders with Another Watches, but are twisted into monstrous forms.
  • Merchandise-Driven: As always, the show revolves around collectible little trinkets. The collectibles this time are called Ridewatches, pocket watches with the faces of previous Kamen Riders. Or in Woz's case, future Kamen Riders.
  • Sixth Ranger: Kamen Rider Woz, Woz's Rider form from an alternate future.
  • Transformation Trinket: The Zikū-Driver (Spacetime-Driver), used by both Zi-O and Geiz, is the main transformation device, while forms are changed with Ridewatches (similar to Decade's Rider Cards). Similar to the Drivers in Ex-Aid, it has two slots for Watches, with one used for the personal transformation and the second for power-ups.
    • Woz uses the BeyonDriver and Miridewatches ("Future Ridewatches").
    • Both Zi-O and Geiz receive unique Watches for upgrade forms. The Zi-O Ridewatch II splits into two and is slotted into both sides of the Zikū-Driver, while the Geiz Revive Watch is an hourglass that grants two modes depending on which side is up.
    • Zi-O uses the Zi-O Trinity Ridewatch, his second upgrade Ridewatch created with the combined powers of Zi-O II, Geiz Revive and Woz. It has three layers that open to cover the Zikū-Driver's screen and reveal the faces of Zi-O, Geiz, and Woz on the front of the watch. The first, representing Zi-O, opens upon inserting the Ridewatch into the Ziku-Driver. The other two, representing Geiz and Woz, are opened by rotating the Unite Ryuzer dial on the side of the Ridewatch.
  • Weapon of Choice:
    • The Zikan Girade is Zi-O's weapon. It can transform between a sword (Ken) and a gun (Jū). As Zi-O II, he gets a second sword called the Saikyō Girade; and the two swords can be combined into a BFS, the Saikyō Zikan Girade.
    • The Zikan Zax belongs to Geiz. It has bow (Yumi) and ax (Ono) modes. In his Revive forms, he instead uses the Zikan Jaclaw, a circular saw (Nokogiri)/claw (Tsume) weapon.
    • The Zikan Despear is used by Woz. It's a staff whose head can switch between spear (Yari), sickle (Kama), and cane (Tsue) modes.
    • Most Rider Armors also feature their own weaponry:
      • The Build Armor has the Drill Crusher Crusher, a drill mounted as a Blade Below the Shoulder.
      • The Ex-Aid Armor has the Gashacon Breaker Breakers, dual Power Fists. Notably, though, the Genm Armor doesn't despite being otherwise identical; it draws more from Genm's Shakiriki Sports upgrade than the Mighty Action X base powers.
      • The Drive Armor has the Shift Speed Speeds, two car drones that the user can launch.
      • The Fourze Armor has the Booster Module rocket arms.
      • The Faiz Armor has the Faiz Shot Shots, knuckle weapons.
      • The OOO Armor has a set of Tora Claw Z Wolverine Claws.
      • The Gaim Armor is Multi-Armed and Dangerous with four Daidaimaru Z swords.
      • The Decade Armor has the Ride HeiSaber ("Heisei Saber"), a Cool Sword that can channel other Riders' powers without even using Ridewatches.

Kamen Rider Zi-O provides examples of:

  • Aborted Arc: Geiz Revive being a Deadly Upgrade. Producer Shirakura had even lampshaded this as Geiz himself getting a power-up and likened it to getting used to a routine exercise.
  • Actor Allusion: Kamen Rider Shinobi/Kagura Rentaro was previously StarNinjer, and if that's not enough, his Rider belt has a spinning shuriken and this soundbyte:
  • Attack of the 50-Foot Whatever: Another Kuuga is much larger than the regular riders, being of a size equivalent to the mecha forms of the Time Mazines.
  • Bad Future: Preventing one where Zi-O takes over the world and rules as an Evil Overlord is the entire plot.
  • Big Badass Battle Sequence: Ora provides a spoiler for the main show in Supplementary Plans 3.5, in that sometime in the future, either because of our heroes' efforts, the Time Jackers, or both, there will be a battle between all Heisei Riders to determine the new king.
  • Bigger on the Inside: The Time Mazine's cockpit is about twice as large as external shots imply, given that it has enough space for multiple people besides the pilot to just walk around freely.
  • Brought to You by the Letter "S": All Riders have "Kamen Rider" written on their faceplates; "Kamen" (カメン) is the shared Rider logo this season, it appearing on everybody's armor in various places and the visors are "Rider" in katakana (ライダー) for Zi-O and Woz and in hiragana (らいだー) for Geiz. When using a Rider Armor, the "Kamen" forehead inscription is dropped, while the visors change to that Rider's name.
    • If you look close enough at Ōma Zi-O's faceplate, it has the kanji for "king" (王) repeatedly imprinted on the blank space.
    • Some Rider Armors inherit letter logos from their original Rider as well (like Decade's X, Double's W, or Drive's K/R). The OOO Armor adds a new one, with its TaToBa chestplate redesigned with the names of OOO's theme animals タカnote , トラnote  and バッタnote  in place of the original's images of those animals. The Double Armor also has giant Gaia Memories for shoulderpads, which like the original Memories are labeled C and J for Cyclone and Joker.
    • The Decade Armor has even more name labels: The original Rider's name moves from the visor to the shoulder, and the chestplate and other shoulder show the name of that Rider's upgrade; so that taken together they read things like "Build Sparkling" and "Ghost Grateful". The faceplate also mimics Decade's cards and has the Rider's name in English in the lower corner. In base version of the armor, the place where the upgrade name would be instead shows a generic barcode with the numbers 2009 (Decade's airing year) and 453145 ("DECADE" in alphanumeric).
    • Another Riders have this in the form of their Rider names and the year they originate from displayed in English on their bodies.
    • Supplimentary Plans Episode 15.5 continues the gag in an imaginary trailer for "Kamen Rider Tsukuyomi"; while we don't see her actual Rider suit, the Ridewatch shows that her visor uses English letters but can only fit part of the name ("TSUKU") on the helmet.
  • Canon Foreigner: Where Zi-O and Geiz receive armors based on past Riders, Kamen Rider Woz's form changes are based on "future" Riders that don't exist "yet": Kamen Riders Shinobi, Quiz, and Kikai.
  • Casting Gag:
    • Hideya Tawada, who played the ninja-themed Shuriken Sentai Ninninger's Sixth Ranger, plays the ninja-themed Kamen Rider Shinobi. Amusingly, the two characters are complete opposites: Rentaro/Shinobi is very much the classical ninja while Kinji/Starninger wasn't, to put it mildly.
    • Jingi Irie, who played Kamen Rider Kikai. He previously portrays Jiro/Kikaider, an android-based hero on 2013 Kikaider Reboot movie.
  • Catch-22 Dilemma: Swartz's plan with Another Shinobi boils down to this. As previously established, the heroes need the Shinobi Ridewatch to beat Another Shinobi; however, they have to beat Another Shinobi to obtain the Ridewatch in the first place. They can't get it the normal way because Shinobi exists in a parallel timeline and they're unable to cross over. Sougo finds another way by convincing Rentaro to believe in his future self and "break" his contract with the Time Jackers, which allows White Woz to create the Ridewatch using his book.
  • Clingy Macguffin:
  • Continuity Nod: As an anniversary series, this series is chock full of them.
    • At the first episode, Sougo meets Sento Kiryu (Takumi Katsuragi) and Ryuga Banjou in the cafe nascita... but as Build's history is wiped because the creation of Another Build, they become fan to Satou Tarou (aka the man with Sento's modified face) instead.
    • In 2018, Emu Hojo and Hiiro Kagami are still doctors on Seito University Hospital. Emu is a pediatrician while Hiiro apparently managed to become the director.
    • At episode 4, it is revealed that Takumi Inui is still working at a laundry.
    • Chuta Ohsugi is still a teacher at Amanogawa High School. Meanwhile, Gentaro Kisaragi is also a teacher and Kamen Rider Club's advisor, he is apparently overseas. Rat and Kong, two of Sanagiman's Smug Super thugs in Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, return as actual students of Amanogawa High, but due to timeline changes their descent to villainy never happened, making them genuinely good schoolboys that have never met any Riders before Sougo and Geiz.
    • Kuroto Dan is still a CEO of Genm Corp, succeeding his father, Masamune Dan.
    • Eiji Hino fulfilled his dream to help whoever he can as a Japan diet member.
    • Kouta Kazuraba is still a space god when the timeline is correct otherwise he's still working at Drupers in the modified timeline. Team Baron also still exist, as a group of street dancers.
    • Takeru Tenkuuji is still living at Daitenku Temple, investigating supernatural phenomenons with his friends Shibuya and Narita.
    • Tsukasa Kadoya is still dimension hopping as Decade, with Daiki Kaito chasing after him.
    • Ryotaro Nogami is still active as Kamen Rider Den-O. He and the Taros are guarding timeline from DenLiner.
    • At episode 21, it is revealed that ORE Journal from Ryuki is closed because social media's influence.
    • The cafe Jacaranda from Blade is still thriving, with Amane Kurihara as its owner. Kazuma Kenzaki and Hajime Aikawa are still avoiding each other as Jokers.
    • At the ending of Agito, Shouichi Tsugami opened his own restaurant. In Zi-O, he travels to France to learn about cooking, leaving Mana Kazaya as the owner. Takahiro Oomuro is a captain in the police force now, leading the resurrected G3 unit.
    • The ancient organization of "Oni" in Hibiki is still exist, with Kyosuke Kiriya and Todoroki as active members. It seems that Makamous are still roaming the land too.
  • Department of Redundancy Department: The Rider Armors' weapons, such as Build Armor's Drill Crusher Crusher and Ex-Aid Armor's Gashacon Breaker Breakers.
  • Double-Meaning Title: The obvious translation of "Zi-O" is "Time King", but "zi" is also a homophone for the word for "written character". Therefore, Zi-O is also the "Character King" and has an extreme case of Brought to You by the Letter "S" and Exactly What It Says on the Tin. Also, just like with Kamen Rider ZO, the Z and O in the name visually look like the number 20 for a 20th anniversary series.
  • Early Installment Weirdness: The opening two-parter of the show differs from all those that follow in a few major ways regarding the premise:
    • The changes to Sento and Ryuga's personalities are drastic and played primarily for comedy. All future returning Riders remain heroic figures even without their powers, and are mostly the same in terms of personality with the notable exception of Kusaka.
    • Another Build is presented as barely sentient and possessed by a demented take on Build's personality that forces him to attack people at random. All future Another Riders are in control of themselves and use their powers for personal gain, with their existing personalities and goals already playing off the themes of the Rider whose powers they've stolen.
    • The creation rules of Another Riders are different in the first half of the show. In it, the creation of Another Riders in the past are instantly wiping the overall history of the corresponding riders (Build, Ex-Aid, Faiz, Fourze, Gaim, and Ghost). In the second half, as the creation of Another Riders is on 2019, the corresponding riders' power and history are left intact (Ryuki, Blade, Agito, and Hibiki).
  • Everything's Better with Spinning: The Zikū-Driver works by inserting a Ridewatch and then spinning the Driver in a full circle.
  • Evil Knockoff: The Another Riders: monstrous versions of the Heisei Riders themselves.
  • Exactly What It Says on the Tin: A common design theme for this series, not only do the Riders' main forms read "Kamen Rider" in Japanese on their faces, Zi-O's eyes changes to the name of the Kamen Rider whose powers he has equipped as his armour.
    • This extends to their weapons as well, Zi-O's Zikan Girade reads ケンnote  and ジュウnote  for sword and gun modes respectively. Geiz's Zikan Zax has おのnote  and ゆみnote  for ax and bow modes respectively.
    • Ride Striker has バイクnote  on the wheels. It comes from the Bike Ridewatch which itself has the katakana on it rather than the usual Kamen Rider face.
    • Zi-O's Time Mazine mecha has a large ロボnote  plastered on its torso. Geiz's is labeled ろぼ, the same in hiragana. Seemingly lampshaded in Episode 1, where Sougo incredulously says "'Robo'?" when Geiz's Time Mazine appears in front of him.
    • Although not easily seen on the show (except in Kuuga, which used a Zorro Mark), magazine scans show that most Riders' boots have custom designs on the soles. Zi-O's and Geiz's soles are labeled with "kick" in either Katakananote  or Hiragananote  as appropriate.
    • This also gets played with when Zi-O uses Build's powers; Due to Sougo himself being bad at math, Build's usual floating equations are replaced with sentences saying "Hard to understand equations", "Some numbers here" and the like.
    • The Riders' gear also has labels incorporated into their designs in out-of-the-way places; the back of the Zikū-Driver is labeled ベルトnote  and the Ridewatch Holder has ホルダーnote  on its underside.
    • Even the Another Riders are labeled, with their respective Riders' names in English stamped somewhere on their bodies.
  • Exty Years from Now: The future characters' home time, 2068, is exactly fifty years from the present day.
  • Foreshadowing:
    • The Evolving Credits give zero indication of who is in the Kamen Rider Woz suit, unlike Zi-O and Geiz. It's the only one that changes hands eventually.
    • The opening always shows Tsukuyomi with the Time Jackers, it's revealed that by the half way of the show that she has powers similar to them.
    • In Heisei Generations Forever when Tsukuyomi loses her memories, she doesn't know why someone would call her Tsukuyomi. This hints that her real name isn't actually Tsukuyomi.
  • Future Badass:
    • Oma Zi-O, the evil Demon King ruling the Bad Future, who is far stronger than his present self. Showcased heavily when it comes to the actual fight between him and his present self, which is a complete Curbstomp Battle.
    • Time alterations create an alternate future where Geiz becomes the savior, Geiz Revive, and kills Oma Zi-O. White Woz hails from this timeline.
  • Gotta Catch 'Em All:
    • Played straight for the collection of the three Miridewatches to produce the Geiz Revive Ridewatch.
    • While collecting the Legend Ridewatches was seemingly dropped due to Sougo gaining greater powers that rendered their use obsolete, episode 30 reveals that his ongoing ascension to Oma Zi-O still required him to collect all 20 Ridewatches aside from Zi-O II's power, foreshadowing tribute arcs for the last six Ridewatches to obtain.
  • Grand Finale: Zi-O serves as the final entry of Kamen Rider's Heisei era, which started with Kamen Rider Kuuga way back in 2000.
  • Gambit Pileup: By the series midpoint Zi-O is essentially the story of Terminators playing chess against each other for the right to start Judgement day.
  • Greater-Scope Villain: Ōma Zi-O. He's the reason the conflict even exists, but, at least at the start of the series, isn't actually involved. Even when he does take action by sending the Dai Mazines to the present, it's stated that it'll take months after they arrive before they actually do anything but stand around menacingly or burrow underground and out of sight. His apathy is justified by the fact that he's our protagonist's future self, and already knows exactly how the events play out because he's lived them. All he has to do is nothing, and Sougo will inevitably become him.
  • Hitler's Time Travel Exemption Act: This idea is essentially one of the main tropes of the series, with Sougo as the Hitler. Tsukuyomi and Geiz come back in time to kill him, but are waffling on whether or not to go through with it. The situation is complicated by other parties that have also come back in time, either to preserve Oma Zi-O's reign or manipulate it to their own benefit.
  • Idiosyncratic Episode Naming: Each episode title involves a short phrase related to the Rider it's giving tribute to, followed by one of the years the episode takes place in (usually the tributed Rider's year of origin).
  • In Spite of a Nail: Not unlike in previous time-travel series Kamen Rider Den-O, time travel works this way for good and ill. Making lasting changes to history is difficult: even with the Ridewatches outright ripping Riders out of existence, backstory and all, they and their friends still gravitate together despite no longer having any reason to have met. On the flipside, it means it'll take a lot more than Sougo simply resolving not to become the tyrant Oma Zi-O in order to make it so.
    • Episode 4.5 emphasizes this by pointing out that non-Rider Hiiro Kagami is almost identical. Some of the other Riders are changed more though, such as Kaixa being alive.
  • La Résistance: There is a large resistance force in 2068 fighting against the tyranny of Ōma Zi-O. Sadly, they're pretty much fighting a losing battle, thanks to Ōma Zi-O being the Physical God that he is. Both Tsukuyomi and Geiz are members.
  • Leaning on the Fourth Wall: When Zi-O first uses Ex-Aid's Critical Time Break finisher, a cut-in and text effects appears onscreen in the style of the original Critical Strike, only for Zi-O to instead knock away the special effects and use the text as projectiles instead.
  • Loophole Abuse: Apparently the rules of time travel here mean that Another Riders are replacing the canon Riders in the timeline, causing the Rider forms to dissipate even if the characters are left alive, just unpowered. But Power Copying is a part of Zi-O's skill set, so copying said disappeared Riders is still fair game.
  • Make Wrong What Once Went Right: The Time Jackers apparently want Zi-O to take over — just with their own candidate in the role.
  • Mangled Catch Phrase: Sougo sometimes repeats previous Riders' catchphrases, but since he barely knows anything about them, he always gets those phrases wrong.
  • Meet Your Early Installment Weirdness: Beautifully inverted in the Kamen Rider Blade arc - Kenzaki and Hajime actually witnessed malevolent Sharing a Body firsthand with Mutsuki and the Spider Undead, but then it was Played for Laughs during Kamen Rider Den-O and Kamen Rider W, and by the time of Zi-O it's become a Recurring Element.
  • Mêlée à Trois: Zi-O vs the Time Jackers vs Woz, all of which are trying to alter history in some way or another (or in Woz' case, not alter history) that are mutually exclusive. On the occasion where he's in 'kill Zi-O' mode, Geiz may also fight independently and against Zi-O.
  • Mini-Mecha: The Time Mazines, which can change into a motorcycle-like vehicle mode and travel through time. Tsukuyomi and Geiz have their own personalized versions, the former of which becomes Zi-O's machine, and they can use Ridewatches to gain the powers of the Kamen Riders just like their users. The Time Jackers also have Time Mazines, which they enhance with other Rider gear: Heure uses Ghost's Captain Ghost and Ora has Kiva's Castle Doran.
  • Mythology Gag:
    • Zi-O's name calls back to both the last 20th anniversary Rider (ZO) and the last time travel Rider (Den-O).
    • Zi-O was born in 2000, the year Kamen Rider Kuuga premiered and started the franchise's Heisei era.
    • The naming scheme for the Another Riders is the same as that of Another Agito. The Another Rider for Agito turns out to be a particularly twisted mythology gag - while certain humans could potentially evolve into Agito, Another Agito only existed because the real form of Agito was taken by Shoichi Tsugami and his sister before that. In Zi-O, humans are forcefully evolved into Another Agitoes whether they want to or not.
    • This isn't the first series with monstrous versions of Kamen Riders. The first time was in Kamen Rider Decade, when Chinomanako, an ayakashi from Samurai Sentai Shinkenger, stole the Diendriver and used it to transform into a monstrous version of Diend.
    • The opening sequence includes many homages to previous Heisei opening sequences.
    • During Woz's opening and ending narration (from Episode 2 onwards), Cronus's clock can be seen behind him.
    • Geiz mixes several aspects of previous secondary Riders: a red Rider so bent on their goal they'll attack the main Rider, wants to eliminate the main for what they represent and originates from a ruined future.
    • Speaking of Ryūki, the end of episode 2 cements a nearly identical arrangement with the more easygoing lead Rider (Shinji/Ryūki, Sōgo/Zi-O), the still antagonistic second Rider (Ren/Knight, Geiz), and a girl keeping them away from each other's throats despite having no powers of her own (Yui, Tsukuyomi), all living together - complete with one mature character to hold them together (barring one Gender Flip).
    • Ōma Zi-O's "Rider/ライダー" visor is vaguely shaped like a bird similar to Shocker's symbol.
    • In a Freeze-Frame Bonus in the scene where time has been paused for Kuroto Dan moments before he gets his Another OOO powers, Dr Maki's doll can be seen in the shelf behind him.
    • The manga for Kamen Rider BLACK had a future version of Kotaro Minami who was brainwashed by Gorgom, who was called Demon King (魔王 Ma Ō), which is what Tsukuyomi refers to Oma Zi-O as
    • Geiz Revive is a double form form that was made specficly to counter Zi-O II and Oma Zio with a bulky Power Form and a lightweight ultrafast Speed form that can counter Zi-O II's Combat Clairvoyance, Much like the ZECT Riders.
      • His Gouretsu and Shippu forms are one to the Rekka and Shippu Survive forms from Kamen Rider Ryuki.
    • Shoichi/Agito is furthering his already well-known cooking skill in France, which appears to be the go-to place for any Supreme Chef in Kamen Rider like Tendo/Kabuto and Oren/Bravo.
  • Never the Selves Shall Meet: Averted; there's never been an issue with meeting one's future or past self.
    • In the Gaim arc, Sougo initially defeated Another Gaim by himself, but Overlord Kouta intervened and encouraged him to trust his friends to gain their own strength. So, Sougo went back in time three days to try and change how he did things, only to eventually get discovered. Despite both Tsukuyomi and Woz railing at him about time paradoxes, nothing bad happens and the two Sougos get along swimmingly.
    • Also averted in Episode 15, where Sougo comes face-to-face with himself in 2068, confirming that Ōma Zi-O really is him.
  • Newspaper Dating: In Episode 1, Sougo checks the expiration date on a milk carton Banjou is drinking from to confirm that he's really gone back to 2017.
  • Only One Me Allowed Right Now: Only one of any specific Kamen Rider is allowed to exist at any given time. This means that when an Another Rider is created, the original Rider loses their powers and their memories of being a Rider. However, copying the powers of other Riders is fair game, and Zi-O and Geiz in fact have to use copied powers to take out the Another Riders for good. At one point during the Ghost arc, there's a battle with three "Ghosts": Another Ghost, Decade Ghost Form, and Zi-O Ghost Armor. Averted with Kamen Riders Den-O, Quiz, and Zi-O himself; as they were able to fight their Another counterparts just fine. According to Word of God, time paradoxes created after Zi-O and Geiz received upgrades mean this rule no longer applies after the series' halfway point; first seen in the Blade episodes.
  • Painting the Medium: Rare In-Universe example when Sougo's lack of familiarity with all the past Riders leads to their attacks, catch phrases and even the SFX for some finishing moves coming out a little... off.
  • Pietà Plagiarism: In episode 22, Tsukuyomi holds Geiz in this pose after he kills himself with a Time Burst against Another Ryuga. White Woz shouting "My savior!" drives it home double.
  • Power Copying: Zi-O and Geiz can borrow the powers of previous Riders. Several other Riders could do this in spin-off media, but this is the first time since Decade that it's been featured in the main show. In fact, the Decade Watch lets Zi-O copy Decade's copying ability — it adds a third watch slot to enhance the Decade Armor with yet another Rider's powers.
    • Zi-O has an additional form of Variant Power Copying where attacks involving words and texts are stylized to fit Sougo more.note 
    • The Another Riders also do this, but considering what they look like, there's clearly something wrong with the process.
  • Previously On: Each episode begins with Woz giving a brief recap of the previous episode, ending with some brief foreshadowing of the events of the current episode, framed as Woz reading the events from his book.
  • Punny Name:
    • Time Mazine. It's "Time Machine" with a "Z", but also puns on "majin", which means "devil".
    • The Jikan Gilade's name is a combination of the phrase "jikan girei" (which roughly means "time's up"), "giri" (slash), and the English word "blade". Similarly, the Zikan Zaxe and Zikan Zaclaw come from "jikan", "zakkuri" ("roughly") and "axe"/"claw".
    • Woz's Zikan Despear puns off of "spear" and the phrase "jikan desu" (literally "it's time", along the lines of "the time has come"), and each form change announcement puns off of the form's name; Spear Mode's phrase is "Yarisugi!", punning off of "yari" (spear) and "yarisugi" (too much, overkill), Sickle Mode's being "Kamashisugi!", punning off of "kama" (scythe) and "kamashisugi" (overpushing), and Cane Mode's being "Tsuesugi", punning off of "tsue" (cane) and "tsuesugi" (overwhelming).
  • Reality Ensues:
    • While Sougo dreams of being king, no one other than Geiz and Tsukuyomi takes him seriously, usually telling him to pursue something more grounded in reality.
    • After the rise of social media, the ORE Journal was rendered obsolete and ended up going out of business.
    • Hayase (Another Wizard) doesn't end up with Kaori just because he came clean with her about his feelings and everything. (Granted that happened in Kamen Rider Kiva, but not here...)
  • Red Herring:
    • In Episode 5 Woz tells Sougo that the Another Fourze incident started with "a shooting star". After meeting the Kamen Rider Club, Sougo assumes Ryūsei Sakuta was involved, as his given name means "shooting star", only to find out Another Faiz/Fourze and the girl he's trying to save were orphans in the Ryūsei School.
    • In episode 9, Another OOO/Kuroto Dan drops a Genm Ridewatch which Geiz and Tsukuyomi picked up. Assuming his cracked origin year display read "2016", the same year indicated on the Ridewatch, they travel to 2016 to defeat him using Genm's powers. This ended in a failed attempt where Tsukuyomi realizes Another OOO's year display actually reads 2010, which meant that the Genm Ridewatch they obtained was not what they needed.
  • Repetitive Name: So far every weapon provided by a Rider Armor takes its name from the item it's based on and doubling the last word. Examples include the Drill Crusher Crusher, the Shift Speed Speeds, and the Gashacon Breaker Breakers.
  • Ret Gone: The creation of an Another Rider causes the events of the Rider's original season to have never happened, and it seems like those events are still gone even after the Another Rider is destroyed (possibly due to the creation of the corresponding Ridewatch(es)). This rule is discarded halfway through the series, with Word of God blaming time paradoxes.
  • Robot Buddy: Zi-O gets watch versions of some previous Rider robots, the Taka Watchdroid from OOO and Kodama Suika Arms from Gaim.
  • Running Gag: For some reason Zi-O seems to get his major upgrades during tribute arcs for card-based Riders:
    • Decade Arc - Decade Armor
    • Ryuki Arc - Zi-O II
    • Blade Arc - Zi-O Trinity
  • San Dimas Time: The Faiz Phone X even allows people in the past and present to make phone calls.
  • Set Right What Once Went Wrong:
    • In order to prevent a Bad Future ruled by a "Demon King", Tsukuyomi goes back in time 50 years, finds the King back when he was an Ordinary High-School Student, and tries to stop him from becoming a villain. Geiz also wants to stop the Bad Future, but would rather take the more direct approach and kill Sougo before he becomes the demon king. He's convinced to instead spare him for now to see whether he really does become evil.
    • White Woz, at least on the surface, seems to be trying to do this: he wants to cause Geiz to become the savior Geiz Survive and avert the Bad Future by defeating Oma Zi-O.
  • Shadow Archetype: The Ryuki arc focused on the return of Dark Shinji and the introduction of Dark Sougo. But instead of being the opposites of the real riders like in the original Ryuki, the mirror counterparts are more the darker impulses and fears of the riders that they hide instead. Dark Shinji is essentially Shinji's deep-seated anger at Ore Journal's readers abandoning them, causing the company to be closed; while Dark Sougo is Sougo's fear of becoming Oma Zi-O and how evil he truly is.
  • Shoe Phone: As expected when drawing from 555, the heroes each have a Faiz Phone X that can switch between being a watch, a cell phone, and a blaster. The Faiz Armor itself also retains a few of these that were used by the original Faiz.
  • Shoulders of Doom: Most of the Rider Armors have giant shoulderpads. Most of them are in the shape of the original Riders' Transformation Trinket or another Iconic Item associated with them. Thanks to being made of a trio of Transforming Mecha, the OOO Armor's shoulderpads are in the form of an actual tiger.
  • Shout-Out:
    • When the cast asks Woz why Geiz's name is based on "gates" and not "gate" in Episode 2.5, he tries to make the excuse that it makes Geiz sound rich, like a millionaire; referring to the tech mogul Bill Gates.
    • How do Sougo and the group enter the game world with the Genmboy? By entering the Konami Code.
    • The Faiz Phone X's name is read as "Faiz Phone Ten", much like the recently-released iPhone X.
    • Episode 6.5 openly names Bleach as the reason why neither Fourze or Meteor returned for guest appearances.
    • In episode 11, Swartz thought Geiz was made of sterner stuff.
    • An internal one, but Decade Armor resembles the design of the player created Ganbarider from the Ganbarizing arcade game. Decade's card gimmick was made as a tie in to Ganbarizing's predecessor, Ganbaride and so Decade Armor carries on the spirit of its namesake.
    • The arrival of White Woz involves wind and sparks of electricity around his point of arrival in the night.
    • In episode 16, Heure carefully picks up a yellow bell pepper before taking a bite with a grin. He even does the overdramatic flourish as he does it.
    • White Woz can write down the names of people along with the foreseen event that will affect them brings to mind the Death Note's users manipulating the cause and time of their victim's deaths.
    • Kamen Rider Shinobi can summon a mechanical toad that briefly stands upright, not only a nod to God Gammer but also the way it forms part of Kakure Daishogun.
    • Episode 20's title is "Final Answer?".
    • The Bad Future that Kamen Rider Kikai comes from - humans have been hunted to near extinction, the only thing keeping them alive being a massive walled compound. And the Humanoise can still find a way in by passing for human. Good thing they don't grow to fifty feet tall...
  • Society Marches On: They get anvilicious with this in the Kamen Rider Ryuki arc - thanks to the spread of social media, ORE Journal has been rendered defunct and ultimately shut down by present day.
  • Spell My Name with an "S": Zi-O is a particularly bad season for finicky spellings, with Punny Names all over the place:
    • Geiz's name, pronounced "Geitsu", was logically assumed to be "Gates," until the Ziku-Driver's LED text display revealed the spelling to be Geiz.
    • Every "j" sound is officially romanized as "z": Zi-O, the Ziku-Driver, the Time Mazine, the various Zikan weapons, etc.
    • The Time Jackers suffered from this a lot, but none worse than poor Heure, whose name is a French word that sounds odd being spoken by Japanese speakers. Previously fans thought his name was "Uhr" or even "Wool". Similarly, Ora's name was thought to be spelled "Hora" or "Aura". We only received confirmation on both when the TV Asahi website added bios for their custom Time Mazines. And we still don't know yet if the third member is "Sworz", "Swortz", "Schwartz", or something else.
  • Spiritual Successor: To Kamen Rider Decade, being a Milestone Celebration season celebrating the Heisei era reaching a multiple of ten years and focusing on borrowing previous Riders' powers. Zi-O also has magenta in his default suit design, which was Decade's main color. It also opens with a Flash Forward to the hero as an unstoppable villain in the future, and has the hero pursued by someone who wants to take him out because a certain crisis we know little about is supposedly all his fault. Decade himself even shows up as an important recurring character, and his Ridewatch acts as a Mid-Season Upgrade for Zi-O.
  • Stable Time Loop:
    • Looks to be invoked on a regular basis. Sougo has to get the Ridewatches from past Riders Sento and Ryuga, after they benefit from the Ridewatches triggering Ripple Effect-Proof Memory - and long after Sougo battled the Another Rider and got Sento and Ryuga to hold onto the Ridewatches in the past. Ensuring that other Riders have Blank Ridewatches in the past is actually a requirement for Zi-O to get them in the first place, meaning that he has to run off to do it off-screen in Episode 6 when he forgets to during the episode's events.
    • Another Fourze owes his entire existence to one of these, as Geiz defeating him as Another Faiz leads to him desperately taking Swartz's offer of the Fourze Anotherwatch.
    • Notably, exactly where the Ziku Driver even comes from seems to be this: Woz, a servant of Oma Zi-O, goes back in time to give it to...Zi-O's past self so he will become Oma Zi-O, allowing that to happen. The second one he gets after his first one was destroyed is Geiz's...which is once more stolen from Oma Zi-O. So Zi-O only becomes Zi-O because his future self's servant brought the Driver back in time to begin with.
    • Ultimately subverted when it comes to the overall plot: at first it appears nothing is changing, but it soon becomes clear changes are happening, even if it's not enough to completely Ret Gone Oma Zi-O permanently. One of these changes is the entire reason White Woz's timeline came into existence to begin with.
  • Super Mode:
    • Zi-O has Zi-O II and later Grand Zi-O.
    • Geiz has Geiz Revive.
    • Woz has Woz Ginga Finaly
  • Symbol Motif Clothing:
    • The Riders' armor is based on wristwatches, with the watch faces used as the helmet faces and the straps going down the front and over the head. Zi-O's is like a Rolex watch, Geiz' is a digital G-Shock watch, and Woz has a smartwatch. Geiz Revive also takes the timepiece theme in a different direction, being based on an hourglass.
    • In addition, Geiz's visor is vaguely butterfly-shaped. This is said to be a reference to the Butterfly Effect.
  • Takes One to Kill One: One of the rules presented in Episodes 2.5 (to the audience) and 4 (to the characters) is that "An Another Rider can only be defeated by the same Rider's powers". However, since the Another Riders' existence negates the powers of the original Riders, this pretty much means that only Zi-O or Geiz can do the job once they get the appropriate Legend Rider Ridewatch.
  • Temporal Paradox:
    • The existence of Zi-O in the first place is one: Woz comes back in time and prophecies Zi-O's rise while Geiz is coming back to kill him and the Time Jackers are coming back to replace him with their own candidate. All three of these actors are directly responsible for Zi-O becoming Zi-O in the first place, despite all three of their motivations coming from his future self. Also, Woz is the one to give Zi-O the Ziku Driver in the first place, meaning Zi-O can only exist via the intervention of a servant of his future self. This is officially confirmed when its revealed that the reason behind the entire show's events and Sougo becaming zi-o was due to the meddling of Swartz. His second Driver is Geiz's, which was also stolen from Oma Zi-O.
    • The Geiz Revive timeline is a similar paradox: Geiz comes back in time to stop the rise of Oma Zi-O, and succeeds by becoming Geiz Revive, defeating Oma Zi-O on the Day of Oma...a form he can only achieve by channeling the existence of Riders who only exist due to him beating Oma Zi-O given to him by a fanatical follower of his future self, and Geiz himself is from a Bad Future resulting from Oma Zi-O conquering the world.
  • Terminator Twosome: Taken up to a threesome in this case:
    • Tsukuyomi and Geiz are the first team - they are both here to Set Right What Once Went Wrong, but she wants to push Zi-O away from villainy non-lethally, while he wants to kill him.
    • Woz is loyal to Ōma Zi-O, and the only one who wants to preserve history.
    • The third faction is the Time Jackers, out to change the timeline to Make Even More Wrong What Once Went Wrong.
    • And then later White Woz comes back from a different possible future where Geiz became Geiz Revive and defeated Oma Zi-O and as loyal to him as his prime self is to Zi-O. This makes him and Woz a unique case where two sides of this trope are the same person.
  • Time Travel: Zi-O is from present time, but Tsukuyomi, Geiz, Woz, and the Time Jackers are from the future (year 2068).
  • Timey-Wimey Ball: Played With. The rules of time travel are established early on, and are generally consistent, even taking into account previous Kamen Rider series (like Den-O not disappearing due to being a Singularity Point, even after his Another Rider counterpart is made). However, all the alterations that everyone is trying to make to the timeline starts building up paradoxes (two of the same person from completely different timelines running arround, Riders from futures that theoretically should not exist showing up, the heroes recieving powers either earlier than recorded or that they never obtained at all, etc) to the point that the universe can't keep up with maintaining one of the rules (namely, the rule that there can only be one of any particular Kamen Rider('s power) arround at the same time).
  • Transforming Mecha: Some Ride Armors are more than just, well, armor. The Fourze Armor takes the form of a rocket (and Sougo can use that formation while wearing it); and the OOO Armor is built out of hawk, tiger, and grasshopper robots. The Gaim Armor, like both the original's Orange Arms and when Drive borrowed his powers as Type Fruit, unfolds from a giant mechanical orange. And the giant Gaia Memories on the Double Armor can transform into humanoid mecha.
  • Wham Episode:
    • Episode 9 has Sougo serving under Dan but that's not the WORST part. It turns out that Sougo could have bested Geiz any time but he prefers to settle things peacefully. When that's gone, Curb-Stomp Battle is an understatement.
    • Episode 15 has Sougo encountering Oma Zi-O for the first time, seeing firsthand just how bad the Bad Future is and how evil his future self really is, making him question for the first time whether or not he wants to become a king.
    • Episode 17 introduces Kamen Riders from the future, a future that shouldn't exist because Oma Zi-O is supposed to destroy all other Riders. And from this future comes a second Woz, one who not only can become a Kamen Rider who can use the powers of these Future Riders, but also worships Geiz as the savior who defeated Oma Zi-O just like his main timeline counterpart worships Sougo.
    • Episode 24 reveals that Sougo doesn't so much as see the future in his dreams as he subconsciously manipulates future events as he dreams it. He essentially created the Kikkai timeline and Another Kikkai was created as a temporal anomaly as a result. Also as a result of White Woz getting the Shinobi, Quiz and Kikai Miridewatches, the Geiz Revive Watch is formed.
    • Episode 27 is one on several fronts.
  • Wham Line:
    • From the Heisei Generations Forever trailer;
      Kamen Rider is nothing but a television show, a fiction.
    • In Episode 15, Sougo reveals that ever since he was a child, he had a dream about giant robots destroying the city, people dying left and right, and a mysterious man telling him to become a king so he could save the world. After Tsukasa flings him fifty years into the future, Sougo meets a man who introduces himself by describing the exact same dream, revealing himself as Sougo's future self and Ōma Zi-O.
  • Wham Shot:
    • Black Woz's investigation of the fateful bus accident that Sougo and Hiryu were in ten years ago reveals that the listed driver for that bus is Tsukasa Kadoya.
    • Episode 30. Daiki/Diend's real target was White Woz's reality-rewriter tablet, and he finally reveals his accomplice behind one of those shimmery portals from Decade. Except it's not anyone from that series. It's Oma Zi-O.
  • Whole Plot Reference: Tsukuyomi distancing herself from Sougo as a result from getting more weary as a result of the massive amount of power he is shown to possess (turning back time and seeing dreams he makes come true) is reminiscent of the police and public becoming more weary of Kamen Rider Kuuga from his growing power after he destroyed an entire city block in Rising Mighty form.
  • Wrong Context Magic:
    • Some previous Riders have aspects to their powers that interfere with the usual rules for Ridewatches. Both Decade and Den-O keep their powers despite the existence of their Ridewatches or of Another Den-O, while Ryuga's origin involves both time loops and a pocket dimension making it impossible for the Riders to get his Ridewatch the normal way. (Interestingly, Gaim is not one of these; despite ascending to godhood in his own series, he's still completely depowered by the existence of Another Gaim. He may have allowed this voluntarily, though his powers have been shown to not control time very well.)
    • The future Another Riders and Miridewatches also operate by different rules than the normal ones. They aren't clearly defined, but it seems like each Rider/Miridewatch has its own set.
    • Another Kikai is created by a strange beetle instead of an Another Watch, which causes complications when the Riders try to defeat it. Meanwhile, the Time Jackers spend their time trying to make a usable Watch with its powers. Which calls into question how the rest of the Another Watches were made in the first place.
    • The Agito tribute is affected by the fact that a monster version of Agito already exists: the rules of the Seed of Agito are that there can only be one Agito, and everyone else with the Seed gets lesser or warped powers. When Agito dies, then someone else with the Seed inherits the true Agito powers. In Zi-O the Agito Anotherwatch works by granting its host the Seed and triggering its imperfect form, which can then be spread to others as The Virus; and like the inheritance rules of the old series Another Agito can become the Agito when the previous host can't.
  • Xtreme Kool Letterz: A lot of the romanization of the names in this show prefer the use of "zi" instead of "ji".
  • Your Terrorists Are Our Freedom Fighters: The Time Jackers are described as freedom fighters from the future, but not only do they want to ensure the birth of Ōma Zi-O, they want him to be even worse and are trying to find candidates other than Sougo to replace him as the Demon King.

Kamen Rider Zi-O: Supplementary Plans provides examples of:

  • All There in the Manual: The Supplementary Plan web specials feature the cast explaining things in the world of Zi-O, such as their Meaningful Names and how Another Riders work.
  • Animated Actors: A live-action version. The Supplementary Plan episodes operate on a bizarre level of reality in between Medium Awareness and No Fourth Wall, where the cast are fully aware that they're fictional characters and make reference to Toei, toy companies, specific writers and directors, and at one point they even spin the camera around to show the production crew...but they're still the fictional characters rather than the actors. Episode 10.5 ends with Geiz flubbing and referring to Sougo as "Okuno-kun", which prompts the director to call "Cut!" and Sougo to gently tease "You can't do that!"
  • Ascended Meme: 14.5 has Sougo, Geiz, Woz, and Tsukuyomi shout "Onore Dikeido!" to Tsukasa at the end of the episode.
  • Bellisario's Maxim: Invoked as one of the rules of the World of Zi-O, as explained in episode 2.5. When Ryuga asks about inconsistencies in Build's altered timeline, Sento replies that one of the rules of time travel is "Don't ask unnecessary questions about adult circumstances." Geiz brings it up again in Episode 13.5 when Takeru uses a hand puppet of Yurusen, presumably referencing the fact that neither the character nor his voice actress Aoi Yuuki came back for Zi-O.
  • Blatant Lies: In Episode 6.5, Takumi and Kusaka try to give explanations why combining the Fourze and 555 tributes are a natural fit, such as Fourze's limb symbols being an intentional tribute to the 555 Riders (which falls apart because Fourze has a fourth square symbol that doesn't match anyone) or both shows and Zi-O being about kings (555 involves hunting for an Orphnoch King, while Fourze... has an "oh" ("king") sound in his name).
  • *Bleep*-dammit!:
    • Heard in Episode 6.5, which discusses the Fourze actors being unavailable. Sōta Fukushi and Ryō Yoshizawa's names, plus the title "Bleach" are bleeped just enough to cover Toei legally. Spoofed at the end of the segment when they discuss Shinichirō Shirakura, producer for both Zi-O and 555 (among other Rider series): he's called "Shirakura-P"note  but the bleep comes after the P, meaning to doesn't actually censor anything at all.
    • It's used again in 11.5, to cover Tsukuyomi when she references Doraemon.
    • And again in 13.5, first when Tsukuyomi compares Yurusen to a character from GeGeGe no Kitarō, and again when Sougo compares Ghost's "collect 15 Eyecons to get a wish" plot to Dragon Ball. Geiz then tells him that if they keep referencing Shonen Jump properties like Bleach and Dragon Ball it'll just get bleeped out...and Sougo points out that his rant is gonna get bleeped too.
  • Brief Accent Imitation: In 13.5, Tsukuyomi dreamily asks if "the Nation's Boyfriend" (Kamen Rider Drive star Ryoma Takeuchi) will be appearing in the show. Takeru drops into an impression of Takeuchi as Shinnosuke Tomari, even referring to Tsukuyomi as Kiriko, and basically tells her "don't ask too many questions about it".
  • Clumsy Trademark Cencorship: Played for laughs, see *Bleep*-dammit!.
  • Depending on the Writer: Lampshaded in 10.5, where the characters complain that their characterization seems off and realize that a different writer had come in on the last couple episodes. And that the director didn't keep things straight because, looking forward through episode 12 and Heisei Generations Forever, there have been seven directors already. Sougo concludes that it's up to the cast to protect their own characterization if the staff won't.
  • Foiler Footage: Discussed In-Universe in Episode 16.5. Sougo, Geiz, and Tsukuyomi wonder how Toei managed to keep the "big secret" of Heisei Generations FOREVER (namely, Takeru Satoh reprising his role as Ryotaro Nogami for the first time in ten years) from being spoiled. Woz explains that the producers used a few tricks, like leaving those scenes out of the shooting script (marking them with "To Be Added") and filming in secret with a skeleton crew on days where no filming was schedulednote . The three heroes remark that they didn't even realize what was happening and actually get offended that Toei would freeze them out like that.
  • Freeze-Frame Bonus: Episode 11.5 reveals that there are a number of items taken from past Rider series scattered around the Kujigojido shop. The cast specifically points out a science-themed clock from Build and challenges viewers to find the rest.
  • Future Slang: Spoofed in Episode 15.5, where Tsukuyomi refers to Sougo as "basic", followed by a pop-up window that explains we aren't really sure if they still use 2010s slang in 2068.
  • Hostile Show Takeover: In Episode 15.5, Sougo explains that he can't give up his belt because he's the star of the show. Geiz then reveals that he wants this to happen, so the show can be replaced by "Kamen Rider Geiz", complete with a debut trailer. Tsukuyomi follows up with a trailer for "Kamen Rider Tsukuyomi".
  • Meaningful Name: Episode 1.5 explains the names of the main trio:
    • As explained in Double-Meaning Title, Zi-O, in addition to meaning "Time King", can also be read as a 2 and a 0, making 20. The epithet of his future self, Ōma Zi-O, is an anagram of "maō", or "demon king".
    • Tsukuyomi is named after the goddess. However, the name can also be read as "counting moons", in other words, a way of telling time.
    • Geiz is a pun off of "gates". As Woz explains, it's related to kings because kings were traditionally viewed as a sort of gateway, like how a pharaoh was seen as a gate between the people and the gods. (The cast then asks him why it's "Gates", plural, but he doesn't have a good answer.) Although not mentioned in the episode, geiz also a German word for "stinginess" or "miserliness".
  • Merchandise-Driven: Specifically addressed in Episode 9.5. Sougo asks why Kuroto Dan is in the Kamen Rider OOO arc and initially concludes that it's because of the toy releasesnote  and wonders if that means the entire series is at the beck and call of toymakers. However, Woz and Kuroto explain that it's the other way around and that merchandise release dates get shifted around in order to line up with the episode airdates.note  In reality, the reason for Kuroto's appearance was because it was the only time actor Tetsuya Iwanaga was free to record his cameo.
  • No Fourth Wall: The Supplementary Plans shorts are like this, with the actors still playing their characters but walking around with scripts in hand and openly acknowledging that they're in a TV show.
  • Once per Episode: Almost every episode starts off with a character reading their script and reciting "(Character) was fraught with anxiety."
  • Out-of-Character Moment: In Episode 15.5, Geiz complains about how the Supplementary Plans episodes will make him say things that he would never say normally, like the suggestion of blowing up Toei Studio back in Episode 3.5.
  • Rage Against the Author: Sometimes the cast takes the opportunity to gripe about the show's staff.
    • After learning in episode 3.5 that there's going to be a Rider War to determine the new king, the main trio go this route to try and prevent it. Tsukuyomi proposes simply appealing to the writers, while Geiz wants to kill the producers. Sougo takes it a step further and proposes destroying Toei studio.
    • Episode 6.5 has Kusaka blame producer Shirakura for the awkwardness of how the Fourze and 555 tributes were mashed together.
    • Episode 7.5 has the main characters complain that many of the scenes that they shot ended up not going into the final product and/or were cut out. Sougo decides to confront the directors himself. The result? The entire premise of Sougo becoming Oma Zi-O was cut out.
    • In 10.5 the main characters express frustration with the staff for not being able to keep their characterizations straight.
  • The Un Reveal: In Episode 15.5, the "Kamen Rider Tsukuyomi" trailer gets shoved away by Sougo just before it would have revealed what Tsukuyomi's rider costume looked like.


Example of: