[[quoteright:259:http://static.tvtropes.org/pmwiki/pub/images/KamenRiderRyuki_8496.png]]
[[caption-width-right:259:[[LoadsAndLoadsOfCharacters Almost too many to count]]. Don't worry, [[ThereCanBeOnlyOne they'll start dwindling down.]][[note]]Starting in the upper-left corner, moving left to right then down: Imperer, Gai, Zolda, Ryuki, Tiger, Ryuga, Odin, Ryuki Survive, Scissors, Alternative, Raia, Knight, Ouja, Femme, Verde, Knight Survive.]][[/note]]
-->''"Those who do not fight won't survive!!"''

The 2002-2003 entry in the ''Franchise/KamenRider'' franchise, and third in the Heisei Era.

Shinji Kido is a young, highly excitable IntrepidReporter for the online news website ORE Journal. Whilst investigating a series of seemingly random disappearances, he stumbles across a [[TransformationTrinket mysterious card deck]] at the home of one of the victims. After picking it up, he finds that he is able to [[MirrorMonster see hostile monsters living inside of reflective surfaces]], and is soon sucked through into the Mirror World: a [[PhantomZone parallel universe]] that serves as the home for the monsters and battleground for the Kamen Riders.

He soon meets up with two people involved with this strange otherworld: Yui Kanzaki, a young girl looking for her missing brother, and her partner Ren Akiyama, a [[BadassLongcoat longcoat-wearing]], [[BadassBiker Harley-riding]] [[TheStoic stoic]] {{Badass}} who has a card deck of his own and can use it to transform into Kamen Rider Knight. Despite the warnings of Ren and Yui, Shinji decides to make a contract with one of the Mirror Monsters to gain its power and fight as Kamen Rider Ryuki to protect the innocent. However, he has unwittingly entered into something far greater...the Rider War.

Thirteen Advent Card decks have been created for thirteen Kamen Riders, and ThereCanBeOnlyOne. The mastermind behind the Rider War is Shirou Kanzaki, Yui's missing brother, and he offers to grant a single wish to the last Rider standing. Shinji is determined to stop the in-fighting between the Riders and concentrate on eliminating the threat of the Mirror Monsters, but Ren is equally determined to have his wish granted, and he isn't the only one. Ideals and friendships clash on and off the battlefield as the pressure of the war grows and the Riders are eliminated one by one.

The series consists of the following installments:

* A 50-episode TV series.
* TheMovie: ''Episode Final''.
* A TV special with MultipleEndings: ''13 Riders Special''.
* An AllJustADream {{crossover}}: ''Ryuki vs. [[Series/KamenRiderAgito Agito]]''.

The series was adapted for Western audiences in 2009 as ''Series/KamenRiderDragonKnight''.

----
!This series contains examples of:

* AbusiveParents: Yui and Shiro had parents who locked them up in the attic for extended periods of time and were neglectful to notice that [[spoiler:Yui got sick and died]]. [[UnwittingInstigatorOfDoom They'd eventually become the reason why The Rider War began]].
* AllJustADream - The Hyper Battle Video.
* AlternateContinuity - The TV series, the ''13 Riders'' special and TheMovie all exist in their own continuities. [[spoiler:This is a result of Shirou Kanzaki's overuse of the ResetButton. The TV series is actually his ''final'' attempt to do it again]].
* AnimalMotifs: The contracted Mirror Monsters, and by extension, the Riders they contract with.
** DragonsUpTheYinYang: Dragreder/Ryuki (and his EvilTwin Dragblacker/Ryuga)
** BatOutOfHell: Darkwing/Knight
** GiantEnemyCrab: Volcancer/Scissors
** ALoadOfBull: Magnugiga/Zolda (it's a minotaur)
** RhinoRampage: Metalgelas/Gai
** SnakesAreEvil: Venosnaker/Ouja
*** MixAndMatchCritters: Genocider
** PantheraAwesome: Destwilder/Tiger
** HollywoodChameleon: Biogreeza/Verde
** ThePhoenix: Goldphoenix/Odin
** SeldomSeenSpecies: Evildiver/Raia (a ray), Blancwing/Femme (a swan), Gigazelle/Imperer (gazelles), Psycorogue/Alternative Zero (a cricket).
* AntagonistInMourning: When Asakura discovers that [[spoiler:he has failed to kill his nemesis, Kitaoka, it prompts him to charge out in a suicidal rage and get killed by the police]].
* AnyoneCanDie. [[spoiler:And does.]]
* AwesomeButImpractical: Zolda and Tiger's Final Vents. For the former, it's GameBreaker status is mitigated by a long build-up time that leaves him wide open to attack, and the fact that despite being able to wipe out large numbers in one go, he never manages to kill anyone with it. [[spoiler:The one character who takes it head on is badly injured, but survives... [[KilledOffForReal and is killed by another rider moments later.]]]] For the latter, it's demonstrated that the gap between when Destwilder attacks and Tiger finishes the enemy off is a wide enough period of time for an aware rider to escape and survive (as both Asakura and Kitaoka managed to do).
** Some of the Visors used by the Riders. While some are dual purpose weapons and card scanners or are easily accessed, Ouja and Odin have large staffs that look cool but they don't use at all in combat and must we pulled out of {{Hammerspace}} just to be used. By contrast, Ryuki just slides a card into a gauntlet on his arm and done.
** Ouja's use of multiple Monsters gives him both impressive power and a more varied arsenal than most other Riders... but it means he has three monsters to feed whereas everyone else only has to take care of one---on top of which, two of those monsters kinda hate him because [[spoiler:he stole them after having killed their original Riders]].
* BackFromTheDead - [[spoiler:Yui Kanzaki]], and this is the driving force behind the entire story.
* BigDamnHeroes - Shinji gets a few, including one in the first few episodes where he saves Ren from Volcancer after it turns on and consumes Scissors.
* {{BFG}} - Zolda ''loves'' these, as he has two: two shoulder-mounted rocket launchers and an artillery cannon that's [[http://i39.tinypic.com/2whjmhe.jpg three times as long as he is high]].
* {{BFS}} - Kamen Rider Knight's Dark Lancer is almost six feet long.
** Alternative's sword also qualifies.
* BittersweetEnding - [[spoiler:The real ending has Shirou Kanzaki pressing the ResetButton again, only this time, he and Yui die in that reality]]
* BlessedWithSuck - Becoming a Kamen Rider means you gain cool powers, but you're also bound to fighting the other Riders and monsters, and if you stop fighting, your contract monster eventually eats you.
** Also, Kagawa is not always happy with his PhotographicMemory.
* BlindIdiotTranslation: See ReverseFunnyAneurysm below. A full list about halfway down [[http://www.animeniacs.com/index.php?act=reviews&subact=d_qrev&id=317 this page]].
* BolivianArmyEnding - [[spoiler:The ending of TheMovie, and one of the possible endings of the Special]].
* BondCreatures - The Mirror Monsters that are neither monsters of the week nor under Kanzaki's direct control.
* {{Brainwashed}} - [[spoiler:The Odin Advent Deck turns the user into Kanzaki's puppet]].
* BreakableWeapons - Shinji's weapon in his "Blank" form (before he becomes Ryuki) is a pathetic thing that breaks after one hit.
* CaptainErsatz - Ren Akiyama/Kamen Rider Knight bears more than a few thematic resemblances to a certain other [[Franchise/{{Batman}} Dark Knight]]. Not that [[RuleOfCool we're complaining]].
** More than that, compare Kamen Rider Knight with... [[NamesTheSame Knight]], [[http://www.comicbookresources.com/prev_img.php?pid=6213&cover=1 Batman's British counterpart]]. (It's got to be unintentional; as Knight has been stuck in ComicBookLimbo for fifty years and only got out recently.)
* {{Cameo}} - Several members of ''Series/KamenRiderAgito'''s cast, including three of the Riders, appear in ''Episode Final''.
* CanonForeigner - Kamen Rider Abyss, who is exclusive to ''Series/KamenRiderDecade''.
* CardBattleGame - Each Rider uses Advent Cards to activate his/her powers.
* CardboardPrison - Asakura breaks out of jail multiple times for one reason or another, the first by traveling the through the Mirror World, the second by hiding the Contract Card for Metalgelas under his shirt when Kitoaka had the police take the rest, and the third by taking advantage of the sympathy a GenreBlind lawyer had for him.
* CassandraTruth - Episode 28 has Shinji reappearing in past episodes, and all his attempts to warn everybody of the future are promptly ignored.
* ChronicBackstabbingDisorder - Toujou, Sano.
* ClothesMakeTheSuperman: The wielders of the Rider Decks were chosen by Kanzaki Shiro, but they can be actually be used by anyone, as noted in the following examples:
** Shinji and Miyuki were not the original owners of their Rider Decks (which is actually an important plot point in Shinji's case). Shinji found the Ryuki deck after its original owner disappeared (presumably killed), whereas Miyuki inherited the Raia deck from his friend Yuichi after Yuichi was eaten by his contract beast. We see the [[LegacyCharacter original Ryuki]] in the ''13 Riders'' TV special.
** After [[spoiler:Kitaoka dies from a terminal illness in the finale, his servant Goro inherits the Zolda deck and challenges Asakura instead.]]
** The ''13 Riders'' special ends with [[spoiler:Ren dying and Shinji becoming the new Knight.]]
* CoolSword - Ryuki, Knight, Ohja, Odin, Femme, Ryuga and Alternative each have one of these.
* CosmicHorrorStory: Averted. It looks very much like one at a glance, but the Rider War happened because a human, Kanzaki, made it happen. [[Spoiler: And for all the power he has, controlling the Mirror Beasts and the strongest Rider, his desires are just as much out of his reach as the rest of the casts.]]
* DarkerAndEdgier - Even within the Kamen Rider franchise as a whole, Ryuki is one of the darker entries, holding the highest body count of major characters in the whole franchise.
** And though fairly passe now, it was the first series that featured officially recognized 'evil' Kamen Riders (as opposed to Rider-like villains, such as the Shocker Riders and Shadow Moon, that didn't carry the "Kamen Rider" title).
* DeadlyGame - Jun Shibaura/Kamen Rider Gai, who creates a video game based on the Rider War that soon spills over into real life.
** [[WildMassGuessing Then]], [[{{Defictionalization}} the fighting game for Playstation is...]]
* {{Deconstruction}} - of the ensemble HenshinHero genre. See FiveManBand below for one example.
** The series also deconstructs competitive {{fighting game}}s and fighting game tournaments. CompetitiveBalance can get shot down real quick through dirty tactics and [[spoiler:said game is fixed, with the host of the tournament having full control of the resident GameBreaker.]]
** It also deconstructs the {{Mons}}. Let's say you form a contract with one of them. Great! Now you can use their body parts as weapons to fight people who also use their monster's body parts to fight. You also have to fight other monsters to give your monster something to eat, unless you come to the conclusion that you can simply feed people to your monster (as Scissors and Ohja prove). If you don't fight the monsters? Then your monster gets hungry and decides to eat ''you''. It also happens if you don't even want to fight or you're forced not to. Or even if your Advent Card (the one you use to sic your monster on other people) or Deck (the thing you use to transform) get broken. And it's not like there's a good chance your monster will even be loyal to you anyways. Especially if you have two other monsters working for you that you snagged off their dead masters, or you just happened to luck out and contract a monster that comes in herds. Wow.
** There's also a deconstruction of the LetsYouAndHimFight and ConflictBall tropes. Whereas in other Kamen Rider shows, they fight each other for different reasons or misunderstandings, here they have no choice ''but'' to fight each other. The entire point of the show is to stop the fighting. This might be an UnbuiltTrope though, since the two tropes didn't have a massive occurrence until right after this show.
** PhlebotinumRebel, one of the central tropes of the Franchise/KamenRider franchise, is also deconstructed, as attempting to use the Advent Decks against Shirou and his aims is doomed from the outset due to the fact that he reserved the most powerful Advent Deck for his own use by perfectly brainwashed drones. [[spoiler: Not to mention that he can just time travel if things get too hairy]].
*** ''Thirteen Riders'' took this trope to hell. Not everyone supports Shinji's attempts to stop the fighting and it resulted in all the remaining riders (about 9 of them) teaming up to kill him and Ren. [[spoiler: And in the alternate ending, where he ''did'' stop the fighting, Shiro simply resets time and has the fight happen all over again]].
** Since [[BadassNormal Kazuya Taki]] from [[Series/KamenRider the first series]], up until [[Series/KamenRiderAgito Makoto Hikawa]], most audiences would assume that cop is our hero's best friend. Then Masashi Sudoh reminds us that [[CorruptCop bad cops]] exist.
* DeflectorShields - The ''Seal'' Advent Card, which protects the wielder from the attacks of a Mirror Monster in the real world.
* DivingSave - [[spoiler:Satoru Toujou]] meets his end in this way to save a father and son.
* DoppelgangerSpin - Knight's ''Trick Vent''. Jumps between this and DoppelgangerAttack; sometimes the clones physically existed and would attack, but other times they were just distractions that would vanish when hit.
* DynamicEntry: Femme's first appearance in the movie is her crashing through the ceiling and cutting up some Mirror Monsters before landing on her feet.
* ElementalPowers - Some of the Riders have one.
** AnIcePerson: Tiger. Decidedly a lot less punny than the usual examples.
** BlowYouAway: Knight
** CastingAShadow: Ryuga
** PlayingWithFire - Ryuki
* {{The End of the World as We Know It}} - What happens if [[spoiler:the Rider War runs on for too long]].
* [[spoiler:EverybodyLives - The true ending of the series]].
* EurekaMoment: Megumi unknowingly gives Reiko one [[spoiler: that leads her to realizing the connection between the disappearances and mirrors, and ultimately to the truth about the Rider War.]] Comically enough, while doing so, Megumi actually missed the opportunity to learn the truth much sooner.
* EverythingFades - Riders' corpses evaporate after a short while.
** Or, in a slightly more horrifying example, a Rider who reverts to human form in the Mirror World is stuck. For about five minutes until their body dissolves.
* EvilTwin - [[spoiler:Kamen Rider Ryuga and his Contract Monster, Dragblacker.]]
* ExtremeOmnivore - Asakura claims to have developed this trait to survive on the streets. Later on we see him take Kitaoka's seafood spaghetti and finish it, ''oyster shells and all''.
* EyepatchOfPower - Reiko gains one out of nowhere in episode 5; a possible case of WrittenInInfirmity, as she mentions in-show that she contracted pinkeye.
* {{Fanservice}} - Megumi. That is all.
* FiveManBand
** A very rare case of the supporting characters (ORE Journal) instead of the actual 'heroes' (Kamen Riders) fitting this trope:
*** TheHero - Ookubo certainly thinks of himself as this, but exhibits TheBigGuy behavior at times.
*** TheLancer - Reiko
*** TheSmartGuy - Shimada
*** TheChick - Shinji, [[TheHero the real Hero]]
*** TeamPet - Megumi
** Play straight in Hyper Battle Video, where four riders plus [[Series/KamenRiderAgito Agito]] team-up, Franchise/SuperSentai style. This is only possible because it's DreamSequence.
*** TheHero - Ryuki
*** TheLancer - Knight
*** TheSmartGuy - Zolda
*** TheBigGuy - Ohja
*** EleventhHourRanger - Agito
* FlashStep - One of Odin's abilities, which is part what made him nearly unbeatable, his opponents couldn't touch him. Also, Femme gains this with her ''Guard Vent''.
* GenericDoomsdayVillain: The Mirror Beasts not allied with any specific Kamen Rider. They mostly show up to battled in a MonsterOfTheWeek fashion, and like the Contract Beasts, they never speak and display so little personality that they appear to be around the level of hungry animals.
* GiantEnemyCrab - Scissors' contract monster, Volcancer.
* GratuitousEnglish: Okubo spouts this on occasion, but not as much as the Riders' Visors do.
* HeroicSacrifice: [[spoiler:Tezuka, Toujou, Shinji and Gorou.]]
* HeroicBSOD - Both Shinji and Ren go through these at various points in the story. Asakura has a [[VillainousBSOD Villainous BSOD]] of sorts at the end.
* ICallItVera - Shimada names her iMac 'Amaryllis' and her laptop 'White Milky'.
** Megumi tries to rename the laptop "Gosaku". Shimada does not approve.
*** Neither did the laptop.
* ICouldaBeenAContender - The original holder of the Raia Advent Deck was Yuichi Saito, a pianist who had suffered a career-ending injury; his wish would have been to repair the damage to his hands, but he [[RefusalOfTheCall refused the call]].
* ISurrenderSuckers: Asakura does this frequently. Whenever he is caught by police, he always finds a way to get his deck back and/or get Venosnaker to help him out. Highlight to his escape from a heavily escorted police wagon.
* IdentityImpersonator - Two fake decks were made for Kamen Rider Tiger so no-one would know who was behind the mask. In a later example, [[spoiler:Gorou takes Kitaoka's place as Zolda when the latter finally succumbs to his cancer]].
* ImprobableWeaponUser - Most notably [[WhipSword Raia]], [[ThisIsADrill Imperer]] and [[KillerYoYo Verde]].
* {{Irony}} - Despite the fact that Raia's Contract Monster, card visor and weapon all contain the word "Evil", [[DarkIsNotEvil he is actually one of the few genuinely good Riders]].
* IncurableCoughOfDeath: [[spoiler:Kitaoka has the bloody variant]].
* InspiteOfANail: [[spoiler: Shinji when trying to change the past after Odin used his Time Vent, nothing he does manages to have an effect. The closest he came was warning Kitoako that Asakura would become a Rider and break out of jail. Kitoaka believed him, but decided against preventing Asakura from becoming a Rider because there had to 13 Riders in the battle the winner to get the prize.]]
* IronicEcho: In the very first episode, Yui walks right up to Shinji and asks: "Are you a Kamen Rider?" (He wasn't one yet, but he had found the deck) Flashforward 48 episodes later, and [[spoiler: after Yui has faded away, [[IntrepidReporter Reiko]], who has seen Shinji transform and enter a mirror, and learned who the Riders are, as well as nearly everything important about the rider war,]] asking him the exact same question.
* ItsAllMyFault: Shinji, in the movie, realizes that [[spoiler:[[ForWantOfANail because he couldn't keep his promise to meet Yui again when he was a child, the entire Rider War happened]]]].
* JigsawPuzzlePlot
* KickTheDog - Kitaoka faking his own death (well, Zolda's death) at the hands of TechnicalPacifist Shinji (which sends him straight into a HeroicBSOD) was the moment that really established him as a total dick.
** Even Asakura feels the need to hammer this one home, about halfway into the series; he asks Reiko to help him meet with and reconcile with his brother Akira, his only surviving family after a fire claimed the lives of their parents - [[spoiler:then announces that ''he'' was the one who started the fire in the first place, and proceeds to finish the job by feeding his brother to Venosnaker.]]
** Kagawa's personal policy, which he tries to teach Shinji - to be a hero, kick one dog if it means saving ten. [[TakeAThirdOption Shinji believes otherwise.]]
** Non-human example: [[spoiler:Darkwing put Eri into a coma before the start of the series, and after she regained consciousness, it went after her again.]]
* LaserGuidedAmnesia - [[spoiler:Ren Akiyama]] undergoes a spot of this, which serves as helpful exposition into his backstory.
* LovecraftLite
* MeaningfulName: The Survive cards are handed out to riders so they can ''survive'' most of the fights.
* MoralityPet - Goro acts as the foil to Shuichi's JerkAss behavior, never attempting to hide it once. Yui is this to Ren.
* MultiformBalance
** JokeCharacter: Blank Form, when a Rider does not posses a Contract Monster. The only Riders to have assumed this form are Ryuki and Ouja.
** JackOfAllStats: All of the Rider's default form, as well as the only only one to most of them.
** SuperMode: Ryuki and Knight's Survive Forms.
* MultipleEndings - The ''13 Riders'' TV special that allowed viewers to phone in and choose one of two endings. [[spoiler: The BolivianArmyEnding where Shinji decides to fight won.]]
* MundaneMadeAwesome:
** Watch as Shimada sets up her laptop in the cafe like an assassin assembling a sniper rifle. "Click...on...Send!"
** Also, Megumi and Gorou's "standoff" in Episode 30.
* MythologyGag - Most Franchise/KamenRider series feature a spider monster in the first episode; Ryuki raises the bar with a GiantSpider that [[OneWingedAngel comes back to life once]].
** Also, the second encounter is often a bat. Guess which Rider Shinji meets first.
** Goro sometimes does Rider 1's and Agito's henshin poses as part of his RedHerring routine.
** The Double Rider Kick appears a few times - once at the end of the Hyper Battle Video (Ryuki and Agito), and once when Shinji and Ren have to fend off a Mirror Monster ''unmorphed''.
** A minor design gag - Ryuki's eyes, Knight's mouthpiece, and Zolda's antennae all evoke the original Rider.
** Though the ''whole'' routine isn't the same, Shinji and Ren's henshin poses incorporate those of Rider 1 and Rider 2, respectively.
* NamesToRunAwayFromReallyFast - Ouja's fusion monster is called ''Genocide''r.
** Subverted with Evildiver, who belongs to one of the good guys [[spoiler:at first]].
** When you deal with a final attack called ''End of World'', you know that it's in your best interest to keep out of the area.
* NoBodyLeftBehind - Those who die in the Mirror World disintegrate into nothing.
* NoGoodDeedGoesUnpunished: Shinji makes his debut fight after entering a contract with Drageder and saves Ren, [[UngratefulBastard and Ren replies by trying to kill him]], nearly succeeding until Yui threatens Ren into stopping.
* NotMeThisTime: Shinji and Ren hear about a ship where all the occupants disappeared and realized it was done by Mirror Beasts, and when they investigate they find Asakura and naturally assume it was his doing, and obviously don't believe him when he denies it, but he turns out to have been telling the truth and a trio of Mirror Beasts not connected to him were the real culprits.
* NoPlansNoPrototypeNoBackup - Used straight and averted; Kanzaki keeps the blueprints of the Advent Decks to himself but before he could do so, Kagawa read his work and used his PhotographicMemory to reproduce it.
* NotQuiteDead - [[spoiler:Kamen Rider Odin, three times]].
** Also a case of ThirdTimesTheCharm.
* NoteToSelf: After [[spoiler: Odin's Time Vent has caused him to relive the entire Rider War up to that point, including the deaths,]] Shinji uses this tropes. Hundred of Postit notes in both his room and his office ([[CrowningMomentOfFunny to the frustration of Yui and Ookubo]]) all with the same words: '''Punch where there's Golden Feathers.''' It lets him score the first hit on Odin at that point...... [[SubvertedTrope And has no effect.]]
** The punch may not have caused damage, but it ''proved'' to Shinji that [[spoiler:he ''could'' fight against Odin and the time loops, even if the only real change he could make was landing a punch where he couldn't before]].
* OddballInTheSeries: It's hard to imagine now, but when Ryuki was first released, many a Showa-era purist declared the franchise ruined. In fact, the reason TheMovie is an alternate ending without going into a full-on {{Elseworld}} (like the other KR movies of the decade) or an extra-long episode (like most {{Toku}} films) is because they didn't know they were going to get a full season at that point.
** It's not just purists whining TheyChangedItNowItSucks if you look at it in context. How different Ryuki was ''when it was new'' is something that goes over the heads of many because of how many things that began in Ryuki stuck. Non-insectoid Riders? Unheard of then. TransformationTrinket that wasn't part of you? Ditto. (Well, ''Agito's'' G3, made by human science and not mad superscience, was a special case, being more of an IronMan suit. ''Everybody'' carrying around morphing gadgets in their ''pockets'' like it's ''Franchise/SuperSentai'' or something? That was out of the blue.) ''Highlander-''like plot? That's the part that's alien to this day. GreyAndBlackMorality was also new to the series. Even the ThemeSong being less 'root for the hero' and more 'J-pop song that ''sorta'' touches on the series' themes' was new. ''Today'' this series is a ''little'' idiosyncratic because the more varied suit designs, the idea of a TransformationTrinket that's stored in your pocket and not your guts, and Riders who were neither capital-G Good nor capital-B Bad stuck. But when Ryuki was new, it was ''very'' much ''Franchise/KamenRider'' InNameOnly, with nothing but the main duo having the Rider 1 and 2 poses to suggest that it was supposed to be a KR series.
* OnTheNextEpisodeOfCatchPhrase: The quote atop the page (or in Japanese, ''tatakawanakereba, ikinokorenai!'').
* OntologicalInertia - Shinji discovers this the hard way, and later [[spoiler:Shiro Kanzaki]] comes to realise it too.
* OutOfCharacter - Played for comedy in the Ryuki VS Agito special. Ryuki, Knight, Zolda and Ouja team up against an evil Agito. The latter 3 act like stereotypical heroes of justice, despite the fact they act very selfish in the real series. Lampshaded by Shinji when even Ouja, an axe crazy murderer, proclaims he is a fighter of justice. In the end, the whole sequence is revealed to have been a dream, much to Shinji's dismay.
* PetTheDog - Even Asakura of all people gets a chance, when he saves a small girl from 3 bug-like Mirror Monsters. Admittedly it was just so he could destroy them ''himself'', but still. It's worth noting that the initial rumors only mentioned 'three monsters', making Asakura a prime suspect of sorts (because he had contracted Jun's and Tezuka's monsters as well after killing them), but Shinji and Ren gave him the benefit of the doubt.
** An offscreen version takes place earlier in the series, when Kitaoka helps out another little girl by paying for her mother's surgery. There's some kind of pattern here...
*** Sort of a pattern. See DivingSave above for an example with a little ''boy''.
* PhantomZone - Mirror World.
* PoliceAreUseless: AND HOW. Justified with the Mirror Beasts, they have almost no way of finding or fighting them, but even when Asakura is in a position where his Mirror Beasts can't help him, half the time they still fail to slow him down.
* PowerCopying - Ryuki Survive's ''Strange Vent'' card always transforms into a copy of the next card his opponent will use.
* PowerLevels: Each Advent Card has a listed Attack rating in multiples of 1000. These seem very unreliable since a clash between Knight and Scissors' [[FinishingMove Final Vents]] left Knight taking more damage.
* RealMenWearPink: Raia.
* RecapEpisode: Episode 28, sort of. [[spoiler: Time Vent's use effectively recaps the story to that point.]]
* RedOniBlueOni: Shinji and Ren.
* RedemptionEqualsDeath: [[spoiler:Toujou.]]
* ResetButton: [[spoiler:Time Vent.]]
* ResetButtonEnding: [[spoiler:Happens at least three times, probably more]].
* RippleEffectProofMemory: Because [[spoiler:he was never chosen by Shirou Kanzaki]], Shinji is the only one who can resist the memory-erasing effects of Odin's ''Time Vent''.
* RunningGag: In the second episode, Shinji racks up a 50,000 yen debt to Ren after Yui smashes a store window to save his life, and Ren volunteers to pay for it. This debt is constantly increasing throughout the series: Ren's itemised bill includes charges such as "Keeping Me Awake Fee" and "General Annoyance Fee".
* SaveTheVillain: Shinji attempts this twice, once when [[spoiler: Odin used his Time Vent, and having some memory of how things occurred with Suuichi, tries to prevent his death, but fails.]] Later does this for Asakura of all people, because a girl his saved, abit for less then heroic reasons, seeing him would encourage her to get better, he makes sure that he can feed his Contract Beasts on a trio of Mirror Beasts he was hunting.
* SayMyName: "Yui."
** Miho/Femme's "ASAKURA!!!" in ''Episode Final''.
** A hilarious example by Shinji: "RON!!"
* SetRightWhatOnceWentWrong: [[spoiler:Shirou Kanzaki]] attempts to do this multiple times to [[spoiler:get the ending that he wants]]. While he is successful in altering inconsequential details, [[spoiler:he never manages to save Yui or prevent Shinji from becoming a Rider]].
* ShoutOut: Ren's first memory on recovering from his LaserGuidedAmnesia (see above) is an image on a woman in a white dress on a beach, just like [[Series/KamenRiderAgito Shoichi]] (they were actually Ren's girlfriend and Shoichi's sister respectively).
** Shiro Kanzaki went by the name Shiro Takami when he studied overseas - both names allude to Shiro Kazami, better known as Series/{{Kamen Rider V3}}.
** The transporting of Asakura in ep 36, to SilenceOfTheLambs - only they didn't put a muzzle on him till ep 40. And just to hammer it home, [[spoiler:he stages another jailbreak by swapping places with his victim, strapping the victim into his Hannibal chair while he himself gets carted out on a stretcher.]]
** And the effect of Freeze Vent on CGI monsters like Genocider looked an awful lot like Duke Org Loki's freezing-and-capturing of the Power Animals in Series/HyakujuuSentaiGaoranger.
** One way to distinguish between the two Alternative Riders is the silver stripes on Alternative Zero, a reference to the primary difference between the first two Kamen Riders (Hayato Ichimonji's suit had the silver stripes).
** Shinji and Ren have Rider #1 and Rider #2's poses, respectively.
* StepfordSmiler - Mitsuru Sano (Kamen Rider Imperer).
* SummonMagic - The ''Advent'' Advent Card summons that Rider's Contract monster.
* SuperPersistentPredator: Mirror Beasts. Any time a human catches they attention, they will chase it relentlessly until either they kill and eat it, only pausing if they need to fight to defend themselves or, if it's a Contract Beast, threatened by a Sealing Card or their respective Rider entering a Contract.
* SuperpowerLottery - You've got Zolda with the GameBreaker Final Vent, you've got Ouja who gets three monsters, you've got Imperer who has a ''herd'' of monsters, you've got Odin who [[spoiler: was designed to ''win'' the Rider War]] and then you've got Ryuki, who needs to use up one card to summon a serviceable hand weapon. Lampshaded when Raia chooses to use Copy Vent to 'borrow' one of Ryuki's weapons rather than use his own.
* SwissArmyWeapon - Ryuki Survive's Drag Visor-Zwei and Knight Survive's Dark Visor-Zwei.
* ThereIsNoKillLikeOverkill - Zolda's Final Vent, aptly named "[[ExactlyWhatItSaysOnTheTin End of World]]"
** It's like the unholy manbaby of a threesome between a MoreDakka, a MacrossMissileMassacre and a BeamSpam, to be specific (insofar as tropes can be "specific").
* TheseHandsHaveKilled - Ren does this after he kills [[spoiler:Kamen Rider Odin]] in self-defense.
** Shinji, after he thinks he's killed Zolda.
* ThisIsADrill - Knight's Final Vent.
* TimeTravel - ''Scads'' of it. The metaplot is impossible to understand until you unravel all the twisted continuities created by all the time travelling.
* TransformingMecha - Dragreder and Darkwing evolve into Dragranzer and Darkraider, which transform into {{Cool Bike}}s.
* UpgradeArtifact - Played straight and subverted. When Shinji becomes Ryuki he suddenly gains the knowledge of how to hold a sword properly, how all his new abilities work and how to perform one hell of a flying side kick. However, as far as his general combat technique goes he's useless when he first becomes a Rider and only marginally improves when he upgrades to Ryuki. He slowly gets better as the series progresses; by the end his fighting skills are up there with the best of them.
** Played even straighter with the other Riders. Kitaoka is a [[spoiler:terminally ill]], golf-playing lawyer. Shibaura is a computer nerd. Kagawa is a mild-mannered middle-aged academic. Only Ren (bar room brawler), Sudou (hardened cop) and Asakura (psycho outlaw) have plausible fighting skills.
*** Then again, those Riders are never shown to have good hand-to-hand skills. Kitaoka sticks to ranged combat and is woeful at hand-to-hand. Shibaura and Kagawa's deficiencies are made up by the sheer power of their armour.
* VillainousRescue: Ryuga makes his appearance by entering the fight between Miho and Asakura, then saving Miho from getting killed by Asakura and proceeds to curbstomp Asakura.
* WhatIf - Miyuki[=/=]Kamen Rider Raia was the original owner of the [[SuperMode Survive Shippu]] card, but willingly gave it to Ren. Since then, Toei has released art and figures of what [[http://ga.sbcr.jp/mfigure/010361/images/01.jpg Raia Survive]] and [[http://ga.sbcr.jp/mfigure/010361/images/000s.jpg Exodiver, the Survive version of Evildiver]], would have looked like.
** Not just Raia: [[http://i159.photobucket.com/albums/t124/UndetectedOne/OujaSurviveB.jpg?t=1257605261 Ouja Survive]] ([[http://media.photobucket.com/image/Ouja%20survive/keaw_2009/OujaSurvive.jpg and with Survive-Venosnaker]]), [[http://fc06.deviantart.com/fs39/f/2008/354/3/5/SIC_kamen_rider_tiger_Survive_by_Mastvid.jpg Tiger Survive]], [[http://fc08.deviantart.net/fs46/f/2009/226/5/f/kamen_rider_odin_survive_by_innoitra_jiruga5.jpg Odin Survive]], and [[http://www.toyzhunt.com/files/users/605/Ryuuga_Survive.jpg Ryuuga Survive]]. Plus [[http://img185.imageshack.us/i/1158753507123.jpg/ concept art of what would have happened had Yuichi Saito contracted with Guldthunder]][[note]]This last one needs some context: Yuichi Saito was the original candidate for the later-to-be Raia deck, and Guldthunder would have been his monster. But he refused Kanzaki's offer, and so was eaten by Guldthunder[[/note]].
** Then there is [[http://ridersclub.multiply.com/photos/album/25/Kamen_Rider_SIC_Gallery#photo=57 Genosurviver]], which is Genocider [[AllYourPowersCombined with nearly every Contract Monster combined onto it]].
* TheWorfEffect - Played straight with most of the Riders' debuts, such as when Zolda breaks out his Final Vent for the first time against both Ryuki and Knight. Subverted when the maggot monsters' first battle after evolving into a more powerful form is with Ohja - and he tears through a whole mob of them ''to start with''.
* ZergRush - Imperer's Final Vent. Also the [[BugWar swarms of maggot monsters]] towards the series finale.
----