[[quoteright:300:http://static.tvtropes.org/pmwiki/pub/images/kamenriderw_1327.jpg]]
[[caption-width-right:300:"We are two detectives in one."]]

->"''Now, count up your sins!''"

The second ''Franchise/KamenRider'' series of 2009 and the eleventh entry of the franchise's Heisei Era.

Shotaro Hidari is a PrivateDetective who imagines his life as something straight out of a HardboiledDetective novel. His partner is a boy called Philip, a mysterious researcher able to [[PsychicPowers psychically]] connect to [[AkashicRecords a collection of all the world's knowledge]].

Together with their landlord and self-proclaimed "chief" Akiko Narumi, they operate the Narumi Detective Agency in the "Windy City", Futo. Their specialty is solving supernatural crimes committed by superhumans called [[MonsterOfTheWeek Dopants]], people who transform into superpowered monstrous forms using one of the dangerous [[TransformationTrinket Gaia Memories]].

To combat this threat, Shotaro and Philip use their own set of purified Gaia Memories and their Double Drivers to [[FusionDance fuse]] into the world's first "[[WonderTwinPowers two-in-one]]" Kamen Rider: Kamen Rider Double.

As the story unfolds, Shotaro and Philip slowly uncover the secrets behind the latter's [[LaserGuidedAmnesia forgotten past]], contend with a HotBlooded [[TheRival police officer]] on a quest of [[YouKilledMyFather personal vengeance]], and track down the source of the Gaia Memories that are being manufactured and sold in the shadows of Futo: the enigmatic "Museum" organization, controlled by the [[TheMafia Sonozaki Family]].

Shows strong influence from 1972 {{Manga}}-turned-{{Toku}} ''Manga/ChoujinBarom1'', HardboiledDetective fiction, CyberPunk, and madcap comedy-- making the series as much a matter of fusion as its Rider.

There is now a [[Characters/KamenRiderDouble Character Sheet]] and a [[Recap/KamenRiderDouble recap]] page. Please put tropes specific to recurring characters on the character sheet, not this page.

[-Note-]: [-The name of the show in Japanese uses the English letter W and reads it as "''Daburu''"/"Double". Depending on who is subbing the show, the name of the show may be referred to as ''Kamen Rider Double'' (the English name given in the logo) or ''Kamen Rider W'' (the literal reading of the show's title).-]

----
!!''Now, count up your Tropes!''

* {{Acrofatic}}: The Sweets Dopant in ep 10. [[spoiler:She swallows Akiko and her intended captive into her gut, and manages to flee all the way to her secret hideout with ''both'' their added weight.]]
* ActorExistenceFailure: Minoru Tanaka, who played the villain of the Kamen Rider Accel DTV movie, committed suicide four days after the movie was released.
* AdamWesting: Ichirou Mizuki in "The L on the Lips". See also LargeHam, below.
* AesopAmnesia: Himeka from "The Nightmarish H".
* AFormYouAreComfortableWith: the main villain of ''Movie Wars Core'' is an EldritchAbomination in the form of a ''giant flaming'' Kamen Rider.
* AkashicRecords: The Gaia Library.
* AllDevouringBlackHoleLoanSharks: The Money Dopant; although what he owns is a casino and not a real loan service. But when he finds someone who can't pay their debts, the poor victim's soul is locked up inside a ''coin'' and he ''swallows'' it.
* AllYourPowersCombined: The Bicker Shield's [[FinishingMove Memory Breaks]], the Bicker Finallusion and Bicker Charge Break, are powered by the [[color:green:Cyclone]], [[color:red:Heat]], [[color:gold:Luna]], and [[color:purple:Joker]] Memories all at once. The Finallusion, a rainbow BeamSpam attack, also counts as AllYourColorsCombined.
** A varition of the Bicker Finallusion is where the [[color:gray:Metal]] Memory is used in place of the [[color:purple:Joker]] Memory, creating a [[DeflectorShields defensive energy shield]].
** It is unknown what effect the [[color:blue:Trigger]] Memory would have on the Bicker Finallusion.
** An [[EvilTwin evil version]] shows up in W Forever A to Z. When [[spoiler:Kamen Rider Eternal uses the T2 Zone Memory for a Maximum Drive, all of the T2 Gaia Memories fly straight for him and place themselves into one of the 26 Maximum Drive Slots, causing a massive power up. Turns the otherwise cool-sounding [[Creator/FumihikoTachiki Gaia Memory voice]] into horror when 26 Memory names are said at the same time.]]
*** To say nothing of [[spoiler:the X-Bicker, a gigantic version of Xtreme's own Bicker Shield with ports for all 26 T2 Memories which Daido wants to use to turn the entire city of Futo into "undead monsters" like himself.]]
** Isaka's been attempting something like this with his multiple Memory ports. [[spoiler:Let's just say it didn't end well.]]
* AlmostKiss: Isaka and Saeko, in "Beyond R". [[spoiler:Ruined by the sound of Accel in the distance, and they never got a chance to finish, because Isaka was destroyed by Accel Trial Form shortly afterwards. Oh dear ...]]
* AloneInACrowd: Happens when Philip encounters [[spoiler:Wakana right after she becomes a fully fledged DarkChick]].
* AMFMCharacterization: Shotaro fashions himself a HardboiledDetective, but frequently undermines himself and winds up what the other characters call "half-boiled"; one of the ways this happens is that he not only listens to {{Idol Singer}}s but sings along.
* AnachronicOrder: The finale. It can get a bit confusing, because the transitions give no indication as to when it's jumping between time periods.
* AndTheAdventureContinues: The season finale. [[spoiler: After one year of Shotaro fighting the remnant Dopants as Kamen Rider Joker, Philip returns (though Wakana effectively sacrifices herself to do so) and resumes his partnership with Shotaro just in time to defeat the Energy Dopant.]]
* AppropriatedAppellation: Philip and Shotaro receive the Kamen Rider name from the citizens of Fuuto themselves.
* ArcWords: Apparently, the word "hard-boiled", which incorporates into Shotaro's potential CatchPhrase and Double's bike, Machine [=HardBoilder=]. Although it sounds more like his favourite phrase than an actually mysterious one.
** [[spoiler:Raito Sonozaki, the Child of Fate.]]
** ''Begins Night''
* AsianAirhead: A type 2 example of this is Himeka Yukimura from the "The Nightmarish H" arc.
* AssimilationPlot: [[spoiler:Gaia Impact, the goal of both the Museum and Foundation X, has shades of this, although it's not clear whether it involves a true hive mind or not; they're moreorless trying to assimilate all humans with the ''earth''.]]
* BadassBiker: Naturally for a Kamen Rider show, Double and Accel count.
** The Arms Dopant is a villainous example.
* BadGuyBar: the place where Isaka plays that piano is frequented by Saeko and Wakana by ep. 31, invoking this trope.
* BadGuysPlayPool: Saeko in "The O Chain"
* BattleCouple: [[spoiler:The Beast Dopant and the Zone Dopant, who are husband and wife.]]
** Saeko and Kirihiko, early in the series. Akiko and Ryu are an example of sorts, since Akiko has fought with Dopants despite not using a Memory herself.
* BerserkButton: Whenever Shotaro is referred to being "[[http://www.youtube.com/watch?v=jPumvhnSRzU half-boiled]]" (skip to about 00:29), although that was a bit moreso in the early episodes.
** Shotaro's reaction to anyone who cries before him (see MythologyGag below) is much, ''much'' stronger, as seen in ep. 44 when [[spoiler:he takes on the Old Dopant despite being aged to about eighty]].
* TheBerserker: [=FangJoker=], at first.
* BigEater: Implied with one of the Sonozaki maids, whom Akiko suspected of being the Sweets Dopant. [[spoiler:Turns out she was wrong, but still.]]
** Also Isaka, due to [[spoiler:the sheer number of Connectors he installed on his body]].
* BigScrewedUpFamily: It wasn't really this at the beginning of the series, but after a few [[CharacterDevelopment Character Developments]] here and there the Sonozaki family became really messed up with everyone trying to fight each other for the top head of the family.
* BitchInSheepsClothing: [[spoiler:Marina]]/T-Rex Dopant. [[spoiler:She even kills her boyfriend and accomplice, Yosuke/Magma Dopant, just to cover its tracks and distract Shotaro.]]
* BittersweetEnding: We have a few of these throughout the show, topped by the penultimate episode. [[spoiler:Shotaro and Philip defeat Jun Kazu, but Philip soon disappears after their victory.]]
** EarnYourHappyEnding: [[spoiler:And in the last episode, Wakana sacrifices her life to bring Philip back.]]
** The ending of ''A to Z'' becomes a BittersweetEnding when we discover later that [[spoiler:Daido and NEVER are actually a bunch of {{Fallen Hero}}es driven mad by a tragedy and not the evil monsters they seemed to be.]]
* BlackWidow: Saeko is this in general outlook, though [[spoiler:Kirihiko is the first one that actually makes it all the way to marriage before she kills him]], and all the boyfriends she kills gets offed due to them [[YouHaveOutlivedYourUsefulness outliving their usefulness]] rather than her wanting their money.
* BloodlessCarnage: In TheMovie, the death of [[spoiler:Maria]] is surprisingly bloodless, considering it's caused by multiple gunshot wounds to the torso. The DirectorsCut adds in some digital blood spatters during the shooting, but the victim's body is still completely unmarked.
* BodyHorror: While [[http://www.tv-asahi.co.jp/double/rider/accelbikeform.html Accel's Bike Form]] is quite cool to look at, a closer examination brings up quite a handful of factors suggesting that the designers are either [[YouFailBiologyForever not very familiar with the human body]] or [[MerchandiseDriven just ignoring it in lieu of the "playability"]]. One counterargument is ''only'' if the armor is strong enough to not suffer damage from its design. But that still doesn't mean Ryu's not gonna feel the impacts from the inside. Of course, that's [[MST3KMantra not to say]] WillingSuspensionOfDisbelief should be neglected.
** Accel's neck is facing a full 90-degree angle upward, which humans aren't capable of.
** The front wheel's shock absorbers are angled ''directly against his collar bones''; likewise, the rear absorber against his thigh bone. Meaning? Repeated concussion against the bones. And if the wheels were to receive a shock big enough...
*** Don't forget that whenever he makes a landing from a drop while in bike form, he hits the ground like a rock. Those shock absorbers aren't exactly doing much, so he's really taking the full force anyway.
** Ryu's body armor is a big one[[note]]In case anyone forgot, Accel's body alone weighs 93 Kg, while the Bike Form, possibly counting in the wheels, weighs 98 Kg.[[/note]]; in other words, he's carrying all its weight on his back and shoulders in Bike Form, one back-break away from drifting along the road on his stomach.
** And...who's to say that the engine block right in front of his chest isn't grilling his skin and muscles?
** It all comes down to how Gaia Memories can physically alter the user to make them "superhuman"
*** Actually it was shown before that the Gaia Memories change their bodies. So, it is not an armor, its a completly new body.
** Using a Gaia Memory with a Living Connector instead of a Driver leads to all kinds of BodyHorror, as the connector will gradually mutate and grow across the user's skin. [[spoiler:And don't start on what happens to Isaka after he's defeated...]]
* BreakingSpeech: Isaka to Ryu in "The D Was Seen", leading Shotaro to [[spoiler:attempt a potentially fatal Twin Maximum Drive]] when Ryu breaks down in tears. [[spoiler:Shroud]] also tries this on Ryu in "The O Chain", but he's [[GenreSavvy a little wiser]] by then.
* BrickJoke: The end of [[Recap/KamenRiderDoubleE3E4DontLayAFingerOnM ep. 4]] shows that Phillip's presence was imperative in winning the all-or-nothing "Old Maid" game, with a deck given by Santa-chan, against the Money Dopant; ep. 12 ends with Phillip pwning Akiko at that same game ''with the same deck even''.
** Look carefully at Shotaro, Phillip and Akiko's photos in the relationship flowchart in the middle of "The Nightmarish H" (just after the JidaiGeki dream episode).
** Shotaro claims to have a special cat-finding skill in the beginning of "Y's Tragedy", which is basically a silly cat impression - but it's proven to ''work'' in the beginning of "The Forgotten U" [[spoiler:when he tracks down Mick. The fact that ''Yukie never had a cat'' may have hinted at that.]]
** A hard-boiled egg tossed aside by Shotaro in the Hyper Battle DVD comes back in the Gaia Memory Encyclopedia. The fact that it was ''overly'' hard-boiled (but of COURSE! since [[VisualPun Shotaro made it]]) almost makes this trope literal.
** That [[StringTheory relationship flowchart]] we see at the midpoint in each arc? ''Movie Wars Core'' reveals who created it.
* [[BroughtToYouByTheLetterS Brought To You By The Letter W]]: The titular rider might be the most {{egregious}} use of this trope ever; to wit:
** 'W' is for Double. He has it emblazoned on his chest, his head fins, [[TransformationTrinket the Double Driver]], [[CoolBike the Hardboilder]], his shoulder pads (in [[color:green:Cyclone]][[color:purple:Joker]] [[color:silver:Xtreme]] form), the Metal Shaft and the Trigger Magnum. Even his/their henshin pose is meant to invoke this, with Shotaro's and Philip's bent arms representing two halves of a 'W'.
*** 'F' is for [[color:silver:Fang]]. Appears whenever [[color:silver:Fang]][[color:purple:Joker]] does it's [[FinishingMove Rider Kick]].
*** 'X' is for [[color:silver:Xtreme]], the Xtreme Memory, [[color:green:Cyclone]][[color:purple:Joker]] [[color:silver:Xtreme's]] head fins, the Prism Sword and Bicker Shield.
** 'S' is for Skull. Has a large 'S' on his forehead (usually covered by his NiceHat) and a sideways 'S' on his Skull Magnum (which, being a PaletteSwap of Double's Trigger Magnum, is really a W with a leg cut off, turning '''\/\/''' into '''\/\''').
** 'A' is for [[color:crimson:Accel]]. Has an 'A' shaped face plate (the top fin of which also forms an 'A' in profile view), has 'A's on the back of his gloves, and two of his [[FinishingMove Maximum Drives]].
** 'T' is for [[color:mediumblue:Trial]]. The Trial Memory is shaped like a T, and it also appears when Accel Trial does his [[RapidFireFisticuffs rapid kick Maximum Drive]].
* BrownNote: Played straight (Puppeteer Dopant's flute) and parodied ('''Jimmy''').
* CallBack: Two possible callbacks to the earlier Twin Maximum Drive [[HellIsThatNoise MAXIMUM DRIVE MAXIMUM DRIVE MAXIMUM DRIVE]]--once with the use of four simultaneous Maximum Drives with Xtreme, and again in the penultimate episode with performing Double Xtreme with the Prism Memory in the Maximum Slot of the belt.
** #13-14 not only reference the events of ''Movie Wars - Begins Night'', but bring back [[VictimOfTheWeek two past characters from the Money and Sweets Dopants arcs.]]
** In ''Movie Wars Megamax'', when Shotaro tells [[Series/KamenRiderOOO Eiji]] and [[Series/KamenRiderFourze Gentaro]] to go on ahead while they fight the Foundation X Zodiarts, he recalls Eiji's line from ''Double Forever'' ("Riders help each other out, right?") and says he's finally repaying the favor.
* CallingYourAttacks: [[InvokedTrope Invoked]]. Double's [[FinishingMove Memory Breaks]] don't ''require'' it, but they ''do'' require Shotaro and Philip to be in synch to use them, so Shotaro came up with the idea of using this to aid in the process. He also does it in "The D was Seen" [[spoiler:when Double and Accel cooperate to take on the Weather Dopant, using a Double Rider Kick to counter Weather's tornado.]]
** Of course, Shotaro still does it when [[spoiler: he's fighting alone as Kamen Rider Joker]], so it can be safely concluded that he does it solely for RuleOfCool.
* CallToAgriculture: The magician from "The D Was Seen" becomes a coffeeshop owner in ''W Returns: Accel''.
* TheCameo: Both Philip and Shotaro appear untransformed in the ''[[Series/KamenRiderOOO OOO]], [[Series/KamenRiderDenO Den-O]], All Riders: Let's Go Kamen Riders'' film, as well as in the ''Movie War Megamax'' crossover between OOO and [[Series/KamenRiderFourze Fourze]].
* CannotSpitItOut: Shotaro just can't admit to Akiko that [[spoiler:her father is dead. In ''Begins Night'' she learns the truth indirectly (witnessing Shotaro and Philip arguing while fighting as Double), but later tells Philip that she still wants to hear it "from that idiot"]].
** A scene in the [[{{Recut}} Director's Cut]] has Shotaro promise to tell Akiko everything after they deal with the current case.
* CastingGag: The boy who Shotaro helps (and teaches the way of being hard-boiled) in the last episode is played by the same actor who played preteen Shotaro in the first episode flashback. He also plays Shotaro again in a small part of Movie War Core in the Skull section.
* [[CatsAreMean Cats With Gaia Memories Are Mean]]
* CerebusSyndrome: Kamen Rider W [[strike:is]] was a comedic series, [[spoiler:until Philip was revealed to be an avatar for the Gaia memory in episode 45.]] Not even Akiko is joking around after that [[WhamEpisode shocking reveal.]]
* CharacterTic: Double's finger point on landing a blow. The ''Nobody's Perfect'' ImageSong video reveals they may have got it from Akiko's dad.
** Kazu's habit of frequently becoming startled and dropping things.
*** Isaka at the piano and Wakana's "Tch!" moments.
* ChekhovsArmory: Literally. There's a museum that houses exhibits related to most of the Dopants.
** Sokichi's hat, which serves as a setpiece and a constant reminder of Shotaro's SurvivorGuilt [[MyGreatestFailure over Sokichi's death in Begins Night]]. [[spoiler: He finally surmounts it in the final episode of the series, donning Sokichi's hat due to the fact he feels he's worthy of it now.]]
** In #23, the doctor that the detectives visit has a bowler hat, unbrella and black jacket clearly visible in the background. [[spoiler: The same ones that Isaka is seen wearing when he's first introduced in #20, and which he puts on at the end of the episode when he's revealed as the Weather Dopant]].
** A particularily well-played example of a single [[ChekhovsGun gun]] that couldn't be found in that literal armory itself: That hole in the ceiling at the beginning of A-Z? [[spoiler:That's how the T2 Joker Memory ended up in Shotaro's office.]]
* CityOfAdventure: Futo, of course.
* ClippedWingAngel: The Virus Dopant seems to access a new ability to manifest outside of its host's body, unlike other Dopants. Despite the potential applications of this ability, this actually proves less effective than if it were functioning normally--in which case it could wipe out an entire city with little effort.
* ComplainingAboutShowsYouDontWatch: An in-universe example. Shotaro dismisses Akiko's Jidai Geki [=DVDs=] because they allegedly put him to sleep. He later changes his tune. The ironic bit is that he started watching it ''because'' [[ItMakesSenseInContext he needed to sleep]].
* ConflictBall: ''Averted'', rarely the case for a Heisei Rider series. Double and Accel rarely fight each other, and it is typically only through the influence of a Dopant that it happens.
* ContinuityNod: "The Radio Q" brings back the Victims of the Week from "Don't Lay a Finger on M" and "The S Terror". ''Forever A to Z'' takes this UpToEleven by adding those from "Girl A", "Find the C", "Farewell N", "L on the Lips", "Nightmarish H", "D was Seen", and "Beyond R".
** ''Movie Wars Core'' has Isamu Bitou from the Zone Dopant arc and [[spoiler:young Shotaro and Marina]]; ''W Returns: Accel'' has the Shirogane family again.
* CookingDuel: Literally, in the Hyper Battle Video.
* CoolBike: In addition to those belonging to [[Characters/KamenRiderDouble the main characters]], Skull has his own bike called the [=SkullBoilder=].
** Kamen Rider Accel ''IS'' a CoolBike.
* CreatorCameo: The scenario writer of the ''Kamen Rider Accel'' movie, Keiichi Hasegawa, appears briefly as a man who almost gets pick pocketed in a bar. So does series writer and writer of the ''Kamen Rider Eternal'' movie, Riku Sanjo, as the user of a Sweets memory in said film.
* CreepyDoll: Puppeteer controls one, and Clay Doll could count, too, what with her [[UncannyValley face]]...
* CrowdedCastShot: ''Forever A to Z'' has several of the past clients visible amongst the Fuuto crowds.
* CurbStompBattle: The final battle between [[spoiler:Saeko (as Nazca R) and Wakana (as Claydoll X)]]. The previews made it out to be an equal fight. [[spoiler:Actually, Wakana has become somewhat like a PerfectPlayAI by this point and wipes the floor with Saeko]]. [=CycloneJokerXtreme=]'s fights also evoke this due to its two main powers: the ability to [[EnemyScan analyse everything about an opponent in an instant]], and then use the Prism Memory to tune his sword to that enemy's exact weakness.
* {{Cyberspace}}: The Gaia Library is a subtle variation without wire meshes or anything except for the bookshelves.
* DanceBattler: The fight against Cockroach Dopant in "Find the C". Even Dango joins in for an epic session.
** Ryuu turns into one of these for one fight scene in the Kamen Rider Accel movie. He's handcuffed to Aoi to keep her from running away, and he doesn't have his Memory, so the entire (rather long) fight looks like a bizarre mix between a brawl and a swing dance as he simultaneously beats up the attackers and keeps Aoi out of harm's way.
* DarkerAndEdgier: The direct-to-video movies entitled Double Returns, showcasing the adventures of both Kamen Rider Accel and Kamen Rider Eternal. Both of them managing to be dark and grim. Accel's story was about [[spoiler: a murderer who was essentially Ryu if Shotaro and Phillip weren't there to help him get over his feelings of revenge, as well as comic relief characters like Jinno and Akiko almost getting killed]]. Eternal's story was [[spoiler:more of a StartOfDarkness and revealed that Daido was a FallenHero. The villain was a real piece of work too, given that he single-handedly caused Daido to be... well... [[WellIntentionedExtremist Daido]] to begin with.]]
* DaytimeDramaQueen: The Nightmare arc features one of these in the form of a feudal Japan samurai drama called ''Saheiji of the Wind'', which Shotaro derides as something not up his alley until he ends up marathoning it in one night and getting absolutely obsessed. Somewhat a subversion considering we only see brief snippets of the actual episodes and they aren't tacky or overdramatic.
* DeadAllAlong: [[spoiler:Philip[=/=]Raito died when he fell into the true Gaia Memory as a child twelve years earlier and was revived as an avatar for the Gaia Memory, as revealed in episode 45. In fact, Wakana calls him - literally - a "mass of data" in episode 46.]]
** Also applies to [[spoiler:all the villains in ''Forever: A to Z'', as well as Jun Kazu.]]
* DeadlyUpgrade: Continuous use of certain experimental Gaia Memories, [[spoiler:such as Nasca and Bird]], will eventually kill their users.
** Of course, ''any'' Gaia Memory used without a driver will eventually drive its user AxCrazy.
* DeathByAThousandCuts: The whole strategy of the Trial form. As Shroud puts it, if kicking once doesn't work, kick ten times. If that doesn't work, do it a hundred.
** Taken to the literal meaning of the trope when he uses his Maximum Drive along with the [[{{BFS}} Engine Blade]].
* DeathByOriginStory: Ryu's family is murdered by a Dopant using the 'W' memory, therefore motivating him to become Kamen Rider Accel. His transformation is completed when he mistakes the Ice Age Dopant, who uses a similar freezing attack, for the Dopant who killed his family.
* DefeatEqualsFriendship: [[spoiler:Mick becomes the agency pet after his Smilodon Memory is destroyed.]]
* {{Defictionalisation}}: Bandai's Premium website sells stuff like [[http://p-bandai.jp/fashion-net/character/daburu/list-da10-n0/ the clothes and accessories for Philip, Shotaro, and Ryu.]] They even have [[http://p-bandai.jp/charafull-lifestyle/a0006/item-1000003973/ fully]] [[http://p-bandai.jp/charafull-lifestyle/a0006/item-1000004642/ functional]] [[http://p-bandai.jp/charafull-lifestyle/a0006/item-1000004643/ Gaia]] [[http://p-bandai.jp/chara/c0025/item-1000005502/ Memories]]. (...well...not ''fully functional''. They won't actually turn you into a Dopant.)
** The release of full-length ''Healing Princess'' clips could also count.
---> Wakana: [[MediumAwareness "I believe we have a lot of new listeners tuning in today..."]]
*** Bonus points for Wakana acting all MoeMoe on the air when we all know what she's [[BitchInSheepsClothing really]] [[DevilInPlainSight like]].
**** Her debut single "Naturally" has also got a real life release to the public.
** The Queen & Elizabeth duo are not immune to this (being members of [=AKB48=] as a factor). In the Liar Dopant arc, they appear on an Series/AmericanIdol-esque contest (Fuuuuuutic Idol) singing their song "Love♡Wars" in order to win a major label release. These episodes also feature opening theme singers Aya Kamiki and TAKUYA as themselves and judges for the contest, performing a "live" version of the opening theme instead of the normal opening sequence.
** In an inversion of this trope, the bands that perform the ending themes for the series (Labor Day, Galveston 19, Florida Keys, and Wilma-Sidr) are claimed to be bands from the fictional city of Futo. The only instance of one of the songs existing as part of the story is during the Liar Dopant arc (ep. 23 & 24) when Shotaro and Philip sing "Finger on the Trigger" for the contest. On the Wind Wave podcasts, only Wakana's show treats the theme songs as being separate from the show. DJ HURRY KENN refers to everything as theme songs.
** TV Asahi has [[http://www.tv-asahi.co.jp/double/gadget/flog_manual.html put online]] a copy of the Frog Pod's assembly manual.
* DemBones: You ''know'' "Dopant Memories" are evil just 'cos they're shaped like bony fossils. [[SpikesOfVillainy With horns.]]
* DiesWideOpen: [[spoiler:Shotaro closes Saeko's eyes.]]
* DistantFinale: Similar to ''Series/KamenRiderHibiki'', "Goodbye to the E" takes place one year after the rest of the series.
* DoesThisRemindYouOfAnything: The Dopant monsters are named after the English word "dopant" and "doping", due to the effects of not possessing a Gaia Driver to mitigate the effects.
** Not to mention the eyes of any human who was on the receiving end of a Memory Break.
** It's possible that the health hazard that goes with using a Gaia Memory intended for someone else was meant to be related to sharing needles, while we're at it.
** [[spoiler:Isaka]]'s death is frightfully reminiscent of death by drug overdose, if you think about it.
** Saeko finds that using Gaia Memories through direct insertion feels much better than when using a Driver.
* DoItYourselfThemeTune: Averted for Double and Accel's themes, played straight with Skull's and Eternal's (that is if you count the movie song as his theme).
* DomesticAbuse: Saeko to Kirihiko, [[spoiler:Ryubee to Shroud - the reason for her BandagedFace.]]
* DopeSlap: Akiko with her trademark green slippers, nearly OnceAnEpisode, but Isamu Bitou from eps 31/32 hands these out at a rate that puts her to shame.
* DoubleTake (no pun intended): In ''Begins Night'', Akiko comes out of nowhere and delivers a DopeSlap to a Dopant during his MotiveRant, causing Shotaro/Double to DoubleTake between her and Philip's body (which she had been carrying before and is currently lying on the ground).
* DyingMomentOfAwesome: [[spoiler:The final battle against the Utopia Dopant, even knowing that Philip will cease to exist once Double's transformation is cancelled. As an [[CallBack added bonus]], they do a Twin Maximum Drive with the Prism Memory in the Maximum Slot and the Xtreme Memory.]]
* EarlyBirdCameo: Kamen Rider Double appeared in ''[[Series/KamenRiderDecade All Riders vs. Dai-Shocker]]'' before his series aired.
** Double's successor, Series/KamenRiderOOO, made his debut in Double's second movie.
* EatTheDog: At the end of "The D was Seen", Isaka thinks about how hungry he is and begins staring at the cat. Poor Mick...
* ElaborateUndergroundBase: Although the underground chamber itself has not much to be said in terms of secrecy [[note]]Akiko, a complete stranger to the agency, didn't take long to find it.[[/note]] or space, the tunnel leading outside in particular is pretty long to be hidden easily.
** The Money Dopant arc features a ''Semi''-Elaborate Underground ''Casino''. The secrecy of its location is a major plot point - it's not in any directory, and only accessible via the free shuttle bus.
** [[spoiler:Turns out the Sonozaki mansion has had [[strike:one]] possibly two, if the archaeological dig and the one seen in ep. 38 are two different locations.]]
* ElementalPowers: Each of Philip's right half Gaia Memories have one - BlowYouAway: ([[color:green:Cyclone]] Memory), PlayingWithFire: ([[color:red:Heat]] Memory) and {{Lunacy}} ([[color:gold:Luna]] Memory).
** and then there's Weather, who has several.
*** "Magma!" "Ice Age!" "Ocean!"
* EnemyScan: One of [=CycloneJokerXtreme=]'s main advantages.
* EurekaMoment: Some of Akiko's random comments accidentally provide keywords or hints Philip or Shotaro might be in need of.
** [[LampshadeHanging Lampshaded]] in "The B Carried on the Wind":
---> Akiko: "Did I say something brilliant again?"
* EvenEvilHasStandards: Kirihiko draws the line at giving a DeadlyUpgrade to kids to see what will happen.
** And now even [[spoiler:''Saeko'']] is drawing a line considering her unease at [[spoiler:Weather modifying Wakana's Driver so it's now not even safely letting her transform.]]
* EverythingsBetterWithDinosaurs: The T-Rex and Triceratops Dopants.
** The Fang Memory makes this actually kind of cute, in a heroic example.
* EvilLaugh: Ryubee has one of these.
* EvilTwin: ''Forever A to Z'' Double Movie features [[spoiler:the ''Cyclone'', ''Heat'', ''Luna'', ''Metal'', and ''Trigger'' Dopants]].
* EvilutionaryBiologist: The Gaia Memories are intended to be experiments in human evolution.
* {{Facepalm}}: Shoutaro is very fond of them.
* FacialMarkings: These appear during the henshin sequence, though they are hard to notice. Episode 19 has one clear shot of them, and during the JidaiGeki dream sequence in "The Nightmarish H", they become something similar to Kabuki.
** All NEVER members can get these in ''Forever A to Z''
* FallenHero: [[spoiler:It's revealed that Daido Katsumi and NEVER are this. They tried their hardest to save a group of psychics only for them all to die right in front of them. Daido was driven insane by this along with most of NEVER, leading to their actions in TheMovie.]]
* FamilyUnfriendlyDeath: [[spoiler:Isaka]] in "Beyond R".
** Two episodes later, Mick/Smilodon literally ''vaporizes'' [[spoiler:the Grasshopper Woman]]
* FemaleGaze: At one point in ''A to Z'' we get [[http://lunajoker.tumblr.com/post/12095538746 a very gratuitous close-up shot of Philip's lips as Maria touches them]].
* {{Fetish}}: Dr. Isaka is only interested in Saeko's body when she's the Taboo Dopant.
* TheFinalTemptation: Relatively minor instance with the Nightmare Dopant. After losing to him, Terui is trapped in his dream world where he's a successful detective (like real life) but his family is also still alive. When arresting said Dopant after waking up, he does thank him for giving him the first good night's rest he's had in ages.
* FinishingMove: All finishing moves are called "Memory Breaks", because [[ExactlyWhatItSaysOnTheTin that's what they do]]: break the victim's Gaia Memory and turn them back to normal. See the [[Characters/KamenRiderDouble character sheet]] for details.
* FiveBadBand: The Sonozaki Family:
** BigBad: The patriarch Ryubee.
** EvilGenius: Elder daughter Saeko (who's a bit of TheDragon, but not as much as...)
** TheDragon: Son-in-law Kirihiko. [[spoiler:Well, [[KilledOffForReal not anymore]]]].
** DarkChick: Younger daughter Wakana. [[spoiler:who's been promoted to TheDragon as soon as she unlocked her SuperMode.]]
** TeamPet[=/=]TheBrute: Mick, of course.
** SixthRanger: Dr Isaka, The owner of the W[[spoiler:eather]] memory. [[spoiler:[[RunningGag NOT ANYMORE]]]].
** EleventhHourRanger: Jun Kazu, member of Foundation X.
* And from the movie:
** BigBad: Katsumi Daido/Kamen Rider [[color:palegoldenrod:Eternal]]
** TheDragon: Kyosui Izumi/[[color:gold:Luna]] Dopant
** TheBrute: Gozo Domoto/[[color:gray:Metal]] Dopant & Ken Ashihara/[[color:blue:Trigger]] Dopant.
** DarkChick: Reika Hanehara/[[color:red:Heat]] Dopant
** [[spoiler:EvilGenius / SixthRangerTraitor: Maria S. Cranberry/Cyclone Dopant]]
* {{Foreshadowing}}: Episode 47 reveals Foundation X's interests in [[Series/KamenRiderOOO some medals]].
* ForWantOfANail: The entire plot of the series could have been avoided altogether had [[spoiler: Raito/Philip not fallen into the well of the Gaia Memory.]]
** And even if that still happened, a good chunk of the plot would have went ''very'' differently had [[spoiler: Shotaro listened to Narumi's words and stay put, or had he not pushed Phillip into the teleporter]].
* FreudianTrio
** Ego: Shotaro
** Superego: Philip
** Id: Akiko
* FullyAbsorbedFinale: The series finale deals with [[spoiler: Philip coming back]], with the ''Double'' part of ''Movie War Core'' dealing with [[spoiler: Ryu and Akiko's marriage as well as Narumi/Skull's first case as Skull.]] The Foundation X storyline is taken up again for ''Movie War Megamax''.
* FunWithAcronyms: The villains of [[TheMovie Kamen Rider Double Forever]] have the group name NEVER [[spoiler:which stands for [[BackFromTheDead NEcro-oVER]]]].
* GRatedDrug: See WithGreatPowerComesGreatInsanity below. Gaia Memories are more than a little similar to drugs, with use of it being called "doping", getting highs off of the use, degenerating psyche with repeated use, and even (in some cases) withdrawal when not using it. Oh, and improper use gets you sent to the hospital a lot quicker than usual.
* GeniusLoci: Fuuto city has shades of this in the movie.
* GirlishPigtails: In flashbacks, teenage Saeko is played by the same actress (Ami Namai) as the 31-year-old Saeko, she just has pigtails to make her look younger.
** It helps that Rin Asuka (present day Wakana) is taller than Namai.
* GoodIsImpotent: Gaia Memories used through a Driver belt are weaker than direct insertion; the Sonozakis make up for this by using extra-powerful gold Memories. Meanwhile, the purified Memories used by the Riders are even weaker, only achieving 100% power during a Maximum Drive.
* GratuitousEnglish: Not just from the belt and weapon voices this time, as Philip and Shotaro [[CallingYourAttacks announce their Memory Breaks and finishers together as well.]]
** Shotaro ''himself'' is subject to this, as he'll mix random bits of engrish into his sentences for no good reason from time to time, though it's more common than you'd think.
** {{Engrish}}: TheMovie promises to extend the events from the first episode's ColdOpen of into full length. The official subtitle of this movie? '''Begins Night'''.
*** The phrase "Begins Night" is even used in the dialogue to refer to the events of the first episode's ColdOpen. One of the groups fansubbing the show chose to employ a bit of {{Woolseyism}} by translating it as "the night it all began".
*** Philip even refers to the murder of Ryu's family as his "Begins Night".
** Ep. 6: just to show that she's well outside her comfort zone, a female politician is shown wandering into a "ghetto" vandalised with such common slurs as "Love Forever" and "Who Are You". Seriously.
** And from the soundtrack, "Finger on the Trigger". Oh dear God, "Finger on the Trigger". In addition to having some of the most painful rhyming in the history of English[[note]]"Freeze" with "Peaces", for an example...[[/note]], it also gives us classics like "Get the Memory! Fight the scary!" and "Wind is '''browning'''! With your feeling!".
** Aya Kujo of "The T That Came Back" uses this a lot. {{Justified|Trope}} in that she's spent the last few months in Los Angeles, and actually manages to speak it [[SurprisinglyGoodEnglish fairly well]].
** Unlike in the past, TV Asahi has not bothered to correct Engine'''Brade''' to Engine'''Blade''' on its website.
*** Maybe it's a thing with Accel. Terui's jacket has an english phrase written on the back.
*** Alternatively, it could be a pun on "brake" and "blade".
** [=CycloneJokerXtreme=]'s shield is called the Prism Bicker, and ''Forever A to Z'' involves a machine called the X-Bicker. Both are devices built to channel multiple [=GaiaMemories=] at once.
** In a 'blink-and-you'll-miss-it' moment in episode 47, a higher-up in Foundation X is searching through her smartphone-ish device detailing the villains from the movie and the medals from Series/KamenRiderOOO. Both entries are written fully in engrish. (Engrish because, if you pause and squint to read it, it's understandable. Just not written correctly.) This may have to do with, during this scene, the woman says 'NEVER' and 'Charming Raven' in a very fluent-sounding accent.
* GratuitousGerman: Fang Streiser and Accel Glanzer, from the German for "streak" (''Streise'') and "gloss" (''Glanz''), respectively.
* GreenLanternRing: The Luna Memory; according to the official info, its power is "Illusions", but for the most part it manifests as [[RubberMan Elasticity]], with [[color:gold:Luna]][[color:purple:Joker]] gaining stretchy limbs, [[color:gold:Luna]][[color:gray:Metal]] turning the Metal Shaft into a [[WhipItGood whip]], and [[color:gold:Luna]][[color:blue:Trigger]] firing homing energy bullets. The "illusion" part manifests mostly for the [[FinishingMove Memory Breaks]], which involve barraging the foe with karate chops, energy discs, and BeamSpam respectively. Additionally, it can reveal hidden enemies when used with the Bat Shot and create a web of light with the Spider Shock.
** The Weather Memory has enough powers to be one of these. See SuperpowerLottery below.
* GreenRocks: The Gaia Progressor Ryubee gives to Wakana, [[spoiler:allowing her to access her Claydoll Xtreme form and the Gaia Library]].
* GrotesqueCute: Claydoll Dopant, and [[spoiler:Terror Dopant's HeadPet, which could almost fit in to ''{{Pokemon}}''.]]
* GrotesqueGallery: One reason for this season standing out from the rest of Franchise/KamenRider is the inexplicably inconsistent monster designs, from Old Gen-worthy oddities like Sweets, to walking terrors, to designs effective enough to earn EnsembleDarkHorse status like Nasca.
* GroundhogDayLoop: A variation. The Yesterday Dopant has the power to make people reenact the exact actions they performed in the previous day, regardless of the location or the consequences.
* GunsVsSwords: Twice in ''A to Z'' for Ken Ashihara/[[color:blue:Trigger]] versus Terui/[[color:red:Accel]] respectively, although Terui quickly switches over to [[color:blue:Trial]] to finish off Ken.
* HandicappedBadass: Not so much the chief himself, but his iconic white hat has a small tear in it.
* HeartIsAnAwesomePower: For a long time some of the less-seen forms were derided as a cut below the others. The three most prominent ones in this case being [[color:gold:Luna]][[color:gray:Metal]], [[color:gold:Luna]][[color:purple:Joker]], and [[color:green:Cyclone]][[color:gray:Metal]]. Then the Puppeteer arc came and reminded everyone [[LightningBruiser what happens when a heavy metal staff is swung at tornado-wind speed]] and the Nightmare arc's shown once again how dangerous [[color:gold:Luna]] can be even without [[color:blue:Trigger]].
* HeelFaceTurn: [[spoiler:After Kirihiko finds out that the Sonozaki Family's ends don't justify the means in "Farewell, N!", he pulls a HeelFaceTurn and goes through a [[RedemptionEqualsDeath really nasty divorce]] via one of the Taboo Dopant's energy ball things.]]
* HenshinHero: Used straight and inverted. Although the Riders, as usual, use their belts to transform, [[MonsterOfTheWeek the Dopants]] use [[TransformationTrinket Transformation Trinkets]] of their own. This effectively makes them Henshin ''Villains''.
* HeroicBSOD: Invoked with Philip, who goes into this when confronted with the one bit of data missing from the Gaia Library: [[spoiler:his family]].
** Shotaro also undergoes a more subtle variant after learning [[spoiler:he cannot transform into Double. He gets better by the end of the episode though]].
** Philip gets another when he [[spoiler:learns his real name: Raito Sonozaki]].
** Straight again on Shotaro after [[spoiler:getting owned by Terror with fear that practically cripples him to near uselessness in episode 46. He got better to become the "wild card" and ruin Ryubee's plans, natch]].
*** [[spoiler: Not entirely straight, given that said fear is purely a result of Terror's attacks rather than any particular actions he takes that breaks Shotaro. The initial seed was planted in an early episode during a chance meeting between the two, and Ryubee just let it fester until fully 'activating it' in episode 45.]]
* HeWhoFightsMonsters: [[spoiler:The Commander Dopant became a Dopant to avenge his dead wife after she was killed by a criminal. In the end, he had not only become a KnightTemplar and a criminal himself, but tries to do the exact same thing to Terui to make him a copy of him.]]
* HilariousOuttakes: The ''Accel'' movie ends with these.
* HollywoodToneDeaf: ''Jimmy''.
* {{Homage}}: Accel: A rookie holding a relatively high rank, TheRival to someone with a V-fin, a red transformed state, a monoeye and a command spike...[[Anime/MobileSuitGundam Char Aznable, anyone?]]
** Thanks to his red leather biker jacket and pants, Ryu looks like a WholeCostumeReference to Kaneda from the Anime classic ''Manga/{{Akira}}''.
** Ryu Terui's identity is just overflowing with these. Let's see: a cool warrior that has SpotlightStealingSquad tendencies, able to use the power of fire and lightning, an excellent cop, can be an aloof ally but is prone to going nuts when consumed by revenge - [[{{Naruto}} is he actually Sasuke Uchiha]]? [[spoiler:For those who don't get the cop connection, the Uchiha clan established (or led) the Konoha Military Police Force.]]
** [[color:green:Cyclone]][[color:purple:Joker]] [[color:silver:Xtreme]] sports a WX motif, a possible homage to [[Anime/AfterWarGundamX Gundam Double X]], complete with a black, white, and green color scheme.
** Accel's SuperMode, [[color:mediumblue:Accel Trial]], is reminiscent of the Anime/TurnAGundam in design. [[http://www.pixiv.net/member_illust.php?mode=medium&illust_id=10973571 Really]].
** Likewise, courtesy of the Level 3 Nasca Memory, now it can be said...[[Anime/MobileSuitZetaGundam Saeko is a Char]].
** Sokichi is one [[MichaelJackson smooth criminal]].
** The [[spoiler:fake]] Jewel Dopant's dress style is akin to that of CarmenSandiego.
** Weatherman's habit of licking his lips references [[TheSilenceOfTheLambs the best-known psychotic doctor of all]].
** The pose Akiko uses in her DreamSequence [[spoiler:playing Double]] resembles that of a pose used by ''Series/SpaceSheriffShaider''.
** Kyoko's outfit resembles that of Franchise/IndianaJones. Given Shotaro's hardboiled motif, their interaction is likely a tongue-in-cheek crossover between two popular subgenres of TwoFistedTales.
*** Possible ActorAllusion in her use of a whip--she played Mele on Series/JukenSentaiGekiranger, in which she would use her tongue as a whip in some cases.
** The Hyper Battle Video features an IronChef segment, complete with the camera angles and commentating done by none other than Shinichiro Ota (the actual commentator of IronChef).
** And now he is [[spoiler: [[Anime/MobileSuitGundam three times stronger]] as Accel Booster]].
** Terui's origin also mirrors that of Series/KamenRiderV3.
*** [[LampshadeHanging Lampshaded]] in the ''Climax Heroes'' fighting games; if you pair up V3 and Accel in tag-team mode, they get a special team title ("Father, Mother, Little Sister", a line from V3's theme song).
** Accel is also [[Series/DenjinZaboga a red superhero who can turn into a bike]].
** In ''Double Returns: Accel'', Jinno gets an entire fight scene to himself, homaging classic JackieChan. Director Koichi Sakamoto is on record as being a huge fan of Jackie's work.
** In the ''Message for Double'' chapter of ''Movie Wars Core'', a flashback to Narumi Soukichi[=/=]Kamen Rider Skull's OriginStory has him witnessing the original Dopant Memory tests on a bunch of young women. The whole thing is lifted straight out of the women-on-heroin scene in ''EnterTheDragon''.
* IdiosyncraticEpisodeNaming: Big time. Titles invoke this trope not once, not twice, but ''thrice''.
** Each episode title holds two parts divided by a slash. Similar to ''Series/KamenRiderKiva''.
** The first part is the name of the serial and always carries a Latin letter. The letter represents both the first letter of a key character (often the MonsterOfTheWeek) and an arc-related word.
** The second part is the name of the individual episode. Pretty much a standard title though.
* TheIdiotFromOsaka: Akiko Narumi came to Futo from Osaka to replace her father, who she didn't knew had died. Her view of the world is quite black and white and therefore she sometimes toys with this trope. However, she does keep Shotaro on the right track with her slipper slap of doom.
** And Akiko's dream sequence in the Nightmare Dopant arc starts with her back in Osaka, with Philip and Terui showing up as lazy Osakan stereotype versions of themselves. This is a bit of an ActorAllusion on Philip's part, as Masaki Suda is Osakian himself.
* IdolSinger: Not only does Wakana get on the action singing her own theme song "Naturally", but Queen & Elizabeth go on an ''Series/AmericanIdol''-like show called "Fuuuuuutic Idol" (yes, six U's) to perform their song "Love♡Wars" ([[LuckyCharmsTitle yes, with a heart]]). Philip and Shotaro enter the competition as "Masked (Kamen) Singers" but just cover one of the show's theme songs, "Finger on the Trigger".
* ImagineSpot: The premise of the Hardboiled Delusion Diaries.
** For an example ''not'' PlayedForLaughs, [[spoiler: when Shroud tells Phillip and Ryu that they were meant to be Kamen Rider Double, she talks about the rider they'd become, Cyclone Accel Extreme, complete with a small imagine spot of just how he'd look]].
* TheImmune: Ryu and Philip appear to be immune to Gaia Memory attacks that affect one's physiology.
* IndirectKiss: For this reason, Akiko becomes very excited about drinking from a coffee cup that she believes Ryu has just used. [[spoiler: Unfortunately, she's interrupted by a client before she can drink.]]
* InfinityPlusOneSword: The Prism Bicker.
* ILetYouWin: [[spoiler:Ryubee allowed Shotaro and Philip to defeat Dopants, all for granting Wakana new powers and access to the Gaia Library.]]
** Often overlooked is the Yesterday Dopant, who [[spoiler:deliberately sets up her fight with Double so that, when she uses her power on Shotaro the next day, it causes him to try and kill Saeko.]]
* InnocentInnuendo: Some fans think that Gunner A attaches to Accel's butt to form [=AccelGunner=]. Hmm.
** the fact is really that Accel's legs and backside are inserted into an opening on the front of Gunner A, so it basically connects to his back, not butt
* ItCantBeHelped: Philip bemoans this when Shotaro [[http://www.youtube.com/watch?v=LQoleI0VKJo starts spamming him to henshin]].
* ItWasAGift: All of Accel's equipment and Double's Frog Pod and Denden Sensor were gifts handed to them by Shroud with no explanation. Yet.
* JidaiGeki: "The Nightmarish H" centers around the Nightmare Dopant, who attacks people in their dreams. Shotaro's takes the form of a JidaiGeki after watching such a series on DVD.
* {{Joshikousei}}: Shotaro's female informant duo, Queen and Elizabeth.
** Just don't call Akiko one.
* JumpingOffTheSlipperySlope: [[spoiler:The Commander Dopant is pretty much what would've happened if Ryu hadn't had Shotaro and Philip to pull him back from actually killing criminals.]]
* {{Kawaiiko}}: Akiko is depicted as a contemporary version ([[ExcitedKidsShowHost with a brightly colored street casual outfit]]); we meet a more traditional one in "The Nightmarish H".
* KickTheSonOfABitch: [[spoiler: Jun killing Saeko]].
* LampshadeHanging: "The Nightmarish H", [[spoiler:"To see the Kamen Rider taking a nap [in a football field] - quite a surreal scene indeed."]]
* LargeHam: Ichirou Mizuki gets to munch on some delicious scenery during his guest appearance in "The L on the Lips".
--> "You're not gonna stir anybody's heart unless you can shout better than '''THAT!!!'''"[[note]]"''Sono teido no'' [[GratuitousEnglish Shout]] ''de wa hito no kokoro wa yusaburenai '''ZE!!!'''''"[[/note]]
--> "I have never heard a song in my life as bad as '''THAT!!!'''"[[note]]"''Jinsei saiaku no uta da '''ZE!!!'''''"[[/note]]
** Mizuki is actually parodying his original performance of the ''MazingerZ'' theme song, which involves him shouting "''ZET!''" at the top of his lungs multiple times, coupled with the fact that ending a sentence with "''ze''" is a G-Rated version of [[ThisIsForEmphasisBitch emphasis, bitch]]. And it would seem that he just likes AdamWesting on TV in general. [[http://www.youtube.com/watch?v=z9mgOk_P4XY Observe.]]
** Akiko deserves special mention for being one of the smallest and cutest Large Hams in Kamen Rider, possibly TV history.
** let's not forget Shotaro himself. With epic LampshadeHanging in the last of the Hardboiled Delusion Diaries.
** The Metal and Luna dopants in the movie are [[BlatantLies certainly not this.]]
* LastMinuteHookup: Terui, who has been either oblivious or avoiding Akiko's [[LoveMakesYouCrazy blatant crush]] on him, gets together with her at the end of episode 44 without any explanation. [[PortmanteauCoupleName Teriyaki]] fans rejoiced.
* LeaningOnTheFourthWall: Santa-chan in the first few minutes of ''Movie War Core.'' The full hero cast is supposed to be attending [[spoiler: Ryuu and Akiko's wedding,]] but they, Shotaro, and Philip haven't arrived yet. Santa-chan remarks there's an hour and a half before the ceremony and wonder if they're okay with an AsideGlance. That's approximately the length of the movie.
* {{Leitmotif}}: much like Den-O, there's the ones from the Double Driver along with regular ones for certain characters. Shroud and Isaka's themes even get reused during their own segments for the ''Forever A to Z'' [[{{Omake}} Net Movies]].
* LiteralSplitPersonality: In the CrisisCrossover part of TheMovie, Series/KamenRiderDecade uses a Final Form Ride card to split Double into two seperate entities: Kamen Rider Double [[color:green:[=CycloneCyclone=]]] controlled only by Philip and Kamen Rider Double [=JokerJoker=] controlled only by Shotaro.
* LoadBearingBoss: [[spoiler:Inverted with Ryuubee's defeat in that the only reason his mansion explodes upon the breaking of the Terror Memory is that his dragon summon, simultaneously defeated in a separate battle, crashes into it.]]
* LoveChart: Only rarely actually concerned with romantic love, but regardless, the second episode of every arc begins with a chart showing the involvement and roles of every person connected to the current case, with a PreviouslyOn narrating over top.
* LoveMakesYouCrazy
-->[[spoiler:'''Marina''']]'''/T-Rex Dopant''': "Wonderful, Sho-chan. I love you...so...[licks lips] ...I'll eat you."
** Let's add [[spoiler:'''Aya Kujo''']]'''/Triceratops Dopant''' [[spoiler:for her motivation in colluding with the Gaia Memory distributors as vengeance for her lover Mizoguchi]]:
---> "The real target of my revenge should be on this worm-infested city called Futo. Mizoguchi loved Futo from the bottom of his heart. He protected it! But this city didn't protect him. They tore up his pride and scorned him! That's unforgivable! Completely unforgivable! This city should just disappear!"
** And the Nightmare Dopant targets those who he thinks are rivals for his classmate Himeka's affection.
** A more benign version is Akiko around Ryu, although [[LastMinuteHookup she got the guy.]]
* LoveMakesYouEvil: [[spoiler:Kazu.]]
* LuckyCharmsTitle: Queen and Elizabeth's song, Love♡Wars.
* LuminescentBlush: Shotaro gets a CGI one of these in episode 30, after Philip confirms their partnership.
--> ''Philip'': "My only partner is Shotaro. You alone."
--> ''Shotaro'': "...why are you saying that now?"
--> ''Akiko'': "Aren't you blushing?"
--> ''Shotaro'': "Don't be stupid, of course not!"
** Terui does this in one of the Delusion Diaries.
* MadeOfExplodium: The D&G Building from ''Begins Night'' suffers nowhere near enough damage (from anyone) to warrant the ''entire top half'' of the building to blow up. Same goes with the satellites and facility in 48: [[spoiler: Shotarou gets a control panel to malfunction by getting his stag phone to wreck it, and ''the entire facility and three satellite dishes'' blow up]]
* MadeOfIndestructium: [=RevolGarry's=] primary function seems to be blocking fatal attacks and generally running things over.
** T2 Gaia Memories are immune to Memory Break attacks.
* MagicalDefibrillator: Accel can apparently slash cardiac arrest victims with his [=EngineBlade=] on it's Electric setting for instant revival.
* MagicalForeignWords: Used by Shotaro and Philip to get Double's two halves in sync for a Memory Break. See the CallingYourAttacks example above for more.
* TheManBehindTheMan: [[spoiler:"Shroud was the one who gave Weather his Gaia Memory!"]]
* ManChild: One of Shotaro's informers, Watcherman: an Otaku blogger with a FunnyAfro.
** 20-year-old Akiko counts as a ''[[{{Kawaiiko}} Woman Child]]''.
* ManicPixieDreamGirl: Akiko Narumi, who Shotaro doesn't ''want'' in his life because she messes up his "hard-boiled" image.
* MatrixRainingCode: The inside of the Xtreme Memory. Bits and pieces of code tend to appear during the Xtreme transformation too, but not nearly as much as Xtreme Memory's inside.
* MeaningfulName: Shotaro ''Hidari''[[note]]"Left"[[/note]].
** ''Saeko''[[note]]Cold child[[/note]] Sonozaki.
*** It also seems to be pronounced somewhat like "psycho".
** [[spoiler:Philip's real name is ''Raito''.]]
*** The kanji for his first name mean [[spoiler: [[BackFromTheDead "person who returns."]]]]
** [[spoiler:The "Gaia Memories" are said to be the memories of the Earth itself.]]
** TheMovie introduces us to Maria S. Cranberry, who acts as a surrogate mother figure to Philip. She's far from [[Literature/TheBible the most famous mother named Maria/Mary]].
* MechaExpansionPack: Double's bike can switch its rear wheel extensions on the [=RevolGarry=] for different modes of transportation. Unlike the previous series, each combo technically has its own name.
** Hard[[color:green:Boilder]]: Land transport. Pretty much the default form. Can come with [[NitroBoost rocket boosters]] for speed (Start Dash Mode).
** Hard[[color:red:Turbuler]]: Air transport.
** Hard[[color:gold:Splasher]]: Water transport, aquatic and subaquatic.
** Hard[[color:maroon:Mammother]]: TheMovie introduces this [[IncrediblyLamePun mammoth]] elephant robot that the [=HardBoilder=]'s front unit can combine with.
*** Which is strange, considering it's an enemy mech and it's never explained how the [=HardBoilder=] can connect with it.
** Gunner [[color:blue:A]] / [[color:crimson:Accel]][[color:navy:Gunner]]/Hard[[color:navy:Gunner]]: a large robot with claws that cann assist Accel, then turn into a tank to link up with Accel Bike Form or the front control unit of Double's vehicles to give him/it rocket boosters and a turret cannon.
* {{Meido}}: Akiko goes undercover to the Sonozaki mansion in this attire. Wakana is somewhat not impressed by Akiko's GenkiGirl antics.
** Later she exposed one of the maids as the Sweets Dopant who had an addiction to sweets and kidnaps chefs and force them to make cakes for her. Well, what do you mean is not symbolic, and the monster is an insane bitch.
* MetalSlime: In the movie, the [[spoiler:Dummy Dopant, who had little in regards to physical strength in direct combat but survived going up against Series/KamenRiderDecade without getting killed and was ''very'' good at running away]].
* MixAndMatch: Take a {{Superhero}} series, stir in some FilmNoir, and sprinkle a bit of PostCyberpunk on top, and you get ''Kamen Rider Double''.
* MoneyFetish: The Money Dopant, that is!
* MonogenderMonsters: Thoroughly averted for once in a ''Rider'' series. Half the Dopants Double fights are women. BizarreSexualDimorphism is averted since the Dopants' real identities are part of TheReveal, [[spoiler:though Yesterday Dopant's cape does give the impression of a miniskirt for some reason.]]
* MookMaker: Luna Dopant in ''Forever A to Z''; Commander Dopant in ''W Returns: Accel''.
* MorallyAmbiguousDoctorate: Isaka.
* MoreDakka: Probably the concept behind the Arms [[spoiler:and Trigger]] Dopants.
* TheMovie: ''Kamen Rider Kamen Rider Double & Decade: Movie War 2010'', which consists of three "acts": the first (''The Last Story'') is [[Series/KamenRiderDecade Decade]]'s GrandFinale, the second (''Begins Night'') focuses on ''Double'', and the third (''Movie War 2010'') has the two meeting and battling their mutual enemies.
** ''Double'' gets its own solo movie, ''Kamen Rider Double Forever: A to Z[=/=]The Gaia Memories of Fate'', in August 2010.
** ''Double'' also gets another Movie Wars three-parter in ''Kamen Rider x Kamen Rider OOO & W feat. Skull: Movie Wars CORE'', which, like ''Movie War 2010'', consist of three acts: the first act (''Skull: Message for W'') is ''Skull's'' background story, the second act (''Nobunaga's Desire'') focuses on ''OOO'', and the third (''Movie War CORE'') has ''OOO'' and ''Double'' meeting and taking on the titular Kamen Rider Core.
* MultiformBalance: In a twist, each of Double's Memories has its own stat balance, but two are used at once:
** Shotaro:
*** JackOfAllStats: Joker
*** StoneWall: Metal
*** GlassCannon: Trigger
** Phillip:
*** FragileSpeedster: Cyclone
*** MightyGlacier: Heat
*** SquishyWizard: Luna
** Special Combinations:
*** LightningBruiser: [=FangJoker=]
*** SuperMode: [=CycloneJokerXtreme=]
*** SerialEscalation: [=CycloneJokerGoldXtreme=]
** Accel:
*** MightyGlacier: Accel
*** LightningBruiser: Bike Form
*** FragileSpeedster: Accel Trial
*** JackOfAllStats: Accel Booster
* MythArc: [[spoiler:The final arc seems to be setting one up for future ''Franchise/KamenRider'' series, with the revelation that Foundation X is researching all kinds of unusual artifacts, including [[Series/KamenRiderOOO the O-Medals]].]]
* MythologyGag: Thanks to the two-men-into-one Rider System, we have the first Franchise/KamenRider to use ''both'' the best-known methods of donning the Rider Belt: Shotaro wears it manually (first done by [[Series/KamenRiderV3 Riderman]] and [[Series/KamenRiderFaiz Faiz]]), and the belt materializes around Philip (started by [[Series/KamenRider the original Kamen Rider]]).
** With the introduction of the Fang Memory, it plays homage to another relatively popular Belt gimmick: The Fang Memory is capable of attacking enemies on its own, briefly stunning them, a trait first introduced in ''Series/KamenRiderKabuto'' with the Zecters and later also used with Kivat in ''Series/KamenRiderKiva''.
*** Speaking of Fang, activating the Maximum Drive requires Double to hit the horn 3 times as done by [[Series/KamenRiderKabuto Kabuto]].
** It should also be noted that Double isn't exactly [[Series/KamenRiderDenO the first Rider to share a body as a gimmick.]] All the colored halves of Double are colored similarly to the Taros, Deneb and Sieg, with the purple areas on Joker corresponding to Ryuta, and Metal silver representing Teddy. And Double uses his hoverbike for the first time against an aquatic monster much like Rod Form used the Radome in his debut.
*** Crosses into FunnyAneurysmMoment with the Liar Dopant, who interprets Kintaros' CatchPhrase AND use of actual papers a little differently.
*** And Shotaro going into full hero mode, [[spoiler:at the potential risk of his own life]], seems to also homage Kintaros taking over as Den-O at the sight of a person crying.
*** Akiko inherited Momotaros' shouting fits (her reaction to Xtreme Form even mirrors Momo's reaction to getting Climax Form).
---> (In ep. 3) "I'm pissed!...[[CallingYourAttacks part two.]]"
** And [[color:green:Cyclone]][[color:purple:Joker]] form carries notable elements of [[Series/KamenRider Kamen Rider-1 (Hongo Takeshi)'s]] design: metallic green and black as main colors, red eyes, the scarf, and double silver stripes (only down the middle and not the sleeves and legs.) In a similar vein, [[color:red:Heat]][[color:gray:Metal]] colors are similar to Series/KamenRiderX (who incidentally was the first Rider to wield a rod). Also, [[color:gold:Luna]][[color:blue:Trigger]] has the colors associated with the alternate forms of Series/KamenRiderBlackRX (blue for Prince of Wrath/Biorider, yellow for Prince of Sorrow/Roborider). It should be noted that Roborider's weapon was a gun and Biorider's ability to become a viscous liquid predates the Luna half's bizarre flexibility.
*** It's probably worth noting here that Kamen Rider-'''2''' (Hayato Ichimonji) also carried those colors. Both of them are usually referred to as: wait for it: [[ExactlyWhatItSaysOnTheTin Double Riders.]]
*** Cyclone form is the only one with a scarf. Fitting, considering that the original three Riders were powered by wind and that Cyclone was the name of the {{Cool Bike}}s used by the original Double Riders.
*** The spinning circle on [=CycloneJokerXtreme=]'s belt references the one on [[Series/KamenRider the very first Kamen Rider's]] belt, Typhoon. Not only does it look similar, but it's even named Xtyphoon. The fact that Xtreme Memory takes the form of a bird also references the eagle motif on Shocker belt buckles.
*** The TrainingFromHell that Shroud puts Terui Ryuu through in ep. 36 is something that Ichigo and most Showa Riders would already be familiar with, courtesy of Tachibana Tobei.
*** Perhaps the Masquerade Dopants could also count in as upgraded and glorified Shocker mooks (in suits, no less!) They also get scramblers in ''Forever A to Z''.
** Double's asymetrical color scheme is reminiscent of ''Series/{{Kikaider}}'', another Ishinomori series. And when in [[color:red:Heat]][[color:blue:Trigger]] form, he has the exact same colors as Kikaider 01.
** In "The Girl...A", a small girl carries a soft toy that resembles [[Series/KamenRiderRyuki Kamen Rider Knight]].
** The "Joker Extreme" kick order is quite reminding of the leg position of the sideway Rider Kicks.
** Skull is pretty clearly an homage to another Ishinomori creation serving as a proto-Kamen Rider of sorts, the SkullMan.
*** Alternatively, it could be a ShoutOut to the manga ''Manga/KamenRiderSpirits'', namely to Interpol agent Taki Kazuya, who pretty successfully attempts to become a Kamen Rider himself [[BadassNormal despite lacking any kind of augmentation]]. And to compensate for his lack of cybernetics, Skull Rider uses guns.
*** Similarly, Accel carries many visual similarities to an Ishinomori tokusatsu hero called Series/KaiketsuZubat.
** The Arms Dopant not only borrows the [[Series/KamenRiderBlade Trial Undead's]] pastiche of mimicking Kamen Riders, but some design aspects as well (skull-like features and cybernetics).
** Watcherman is a very subtle one: His appearance is based on Ishinomori.
** There's also a parallel between the main characters of ''Double'' and [[Series/TokusouSentaiDekaranger another detective-themed Toei tokusatsu]]:
*** Shotaro is Ban ([[HotBlooded impulsive]] [[IdiotHero hero]]) and Hoji (obsessed with being a pro/hardboiled, likes to act cool).
*** Philip is Sen (BunnyEarsLawyer, TheSmartGuy) and Jasmine ([[PsychicPowers supernatural powers]], [[IOweYouMyLife formerly saved by their mentor]]).
*** Akiko is Umeko ([[{{Kawaiiko}} childish]], TheNapoleon).
*** Terui is Tetsu (bike-themed SixthRanger, joins the story due to [[YouKilledMyFather vengeance on his family's murderer]]).
*** Sokichi is Doggy (Mentor character with a darker themed transformation.)
** From ''Double Forever: A to Z'', [[spoiler:Kamen Rider Eternal]] not only draws upon [[Series/KamenRiderHibiki elements of Oni design]] (banded armor instead of chestplates, and two-colored flaming motif), but is colored the same as Oni-form Kiriya.
*** Before that though, [[spoiler:Bird Dopant]] can be heard repeating the phrase "''oni''i-san, kochira" (normally heard from Douji and Hime) in ep. 18.
** When we first meet Dr Isaka, he's in a tuxedo and bowler hat, playing a piano - referencing the old man who'd been forgotten by everyone except his only friend, the young piano genius [[spoiler:who'd been in a coma for some time, causing the old man to lose his place in time]] from ''Series/KamenRiderDenO''.
** The Hopper Dopant, who [[ExtremityExtremist fights exclusively using kicks]] not unlike [[Series/KamenRiderKabuto Kamen Rider]] [[ExactlyWhatItSaysOnTheTin Kick Hopper]] (especially with the sparks from the heels just like Yaguruma and his spurs)
*** Who in turn was a ShoutOut to the original Kamen Rider 1.
*** In ''Film/KamenRiderTheFIRST'' Hongo Takeshi/Kamen Rider 1 was referred to as Hopper.
*** Furthermore in human form, she uses boots with stun gun heels - just like [[Manga/KamenRiderSPIRITS Taki Kazuya]].
** Mikio Jinno is an {{Expy}} of Okubo Daisuke, the ORE Journal chief from Series/KamenRiderRyuki.
** Kamen Rider Joker looks remarkably similar to Series/KamenRiderBlack, and even strikes the same pose as him.
*** This can count as an {{Homage}}, as Renn Kiriyama/Shotaro has stated he is a huge fan of Series/KamenRiderBlack.
** [[spoiler:The Utopia Dopant]] rather resembles [[Series/KamenRiderDenO Kamen Rider Gaoh]], including the way the [[TransformationTrinket trinket]] is dropped to start the transformation
*** And he uses [[Series/KamenRiderBlade Garren's]] backflipping-drop kick Rider Kick [[spoiler:during the final battle, where it's countered by Double's Double Prism Xtreme]].
** In the crossover movie set with ''Series/KamenRiderOOO'', we are shown Soukichi Narumi's first case as Kamen Rider Skull. Who does he fight? The Spider and Bat Dopants.
** In ''A to Z: The Gaia Memory of Fate'', several sound effects first used in ''Series/KamenRider'' are used a couple times.
*** Speaking of which, the sound of the [[Series/KamenRiderHibiki Ongeki drum]] can be heard during the JidaiGeki dream in "The Nightmarish H" (the moment Terui Ryuu shows up).
** The Weather Dopant describing the sight of a Kamen Rider sleeping in the open as 'surreal'...did he catch the ED for Series/KamenRiderKuuga?
** The net-exclusive comedy shorts released alongside ''Double Forever'' manage two Shout Outs to previous ''Franchise/KamenRider'' shows. When discussing the Feudal Japan Memories from the Nightmare arc, Jinno suggests that the Feudal version of Fang would be "Kiba", followed by saying "[[CatchPhrase Kivatte ikuze!]]". Makura interrupts, saying, "That's from [[Series/KamenRiderKiva that Kouji Seto show]]!" In another short, Shroud tells Akiko that they're going to go on a journey to learn as much as they can about all the Riders; Akiko protests "But it's not like I'm [[Series/KamenRiderDecade Decade]] or anything!"
** Accel has two {{Super Mode}}s, [[Series/KamenRiderFaiz one which gives super speed, and the other which allows him to fly.]]
*** Also from ''W Returns: Accel'', the Commander Dopant's {{Mooks}} have [[Series/KamenRiderKabuto Zectrooper body armor]], which had previously been recycled for the [[Series/KamenRiderDenO Lion Imagin's]] minions.
*** The location of the final battle is [[Series/KamenRiderV3 Kazami]] Quarry, which may serve as a LampshadeHanging on the fact that V3 and Accel have similar backstories (losing their parents and little sister to a Kaijin).
*** Another nod to Manga/KamenRiderSpirits. The way Double used the wheel of Accel's bike form to give his Rider Kick an added boost for the battle against the Liar Dopant? Series/KamenRiderV3 did the same thing with his bike to beat the Eagleroid kaijin.
* TheNapoleon: Akiko, Akiko, Akiko.
--> '''Akiko''': "'''Who're you callin' a''' - ''~beautiful~'' - '''middle schooler?!'''"
--> '''Shotaro''': "[[Manga/FullmetalAlchemist I didn't]] [[HilariousInHindsight say that]]!''"
* NeverFoundTheBody: Sokichi Narumi's remains were never found, lampshaded in ''BeginsNight''. Also, at the end of "What K Needs", Shotaro knows that the case isn't over yet because [[spoiler:Wakana's body wasn't found.]]
* NiceHat: Shotaro's fedora of awesome. Also Terror Dopant, whose oversized headgear gets special attention during his TransformationSequence, and even has its own curtains, which obscured his true appearance during his EarlyBirdCameo in "The W Search".
** Not to mention the Boss' wonderful fedora in both human ''and'' rider forms...
** Weatherman's bowler cap of evil.
* NiceJobBreakingItHero: Shotaro's key trait is that he's the SpannerInTheWorks... However, this means that he's the spanner of a lot of works. It's worth noting that this happens both in the beginning and ending of the series.
** First off, he pushes Phillip into a teleportation chamber which puts him in the crystal prison from the beginning of the show, thus causing his mentor to rescue him and get killed for it. [[SubvertedTrope However,]] [[spoiler:this proved to ''help'' Phillip, since if things went as planned, Narumi, Ryu, and Phillip would have been turned into pawns for Shroud's RoaringRampageOfRevenge]].
** Then in the end, he [[spoiler: slips the fact that Phillip died to save Wakana, who then runs off to start the [[AssimilationPlot Gaia Impact]].]] [[SubvertedTrope However,]] [[spoiler: Wakana executes the Gaia Impact, but uses it to revive Phillip. This proved vital when Phillip took an energy bullet for Shotaro.]] So in short, If Shotaro [[spoiler:didn't say 'Phillip died' to Wakana, ''he'' would have died. Nice Job Fixing It, Hero?]]
* NiceJobFixingItVillain: Utopia's [[spoiler:plan to revive Wakana's energy by tormenting Phillip also got to Shotaro enough to make him rescue her.]]
* NoSell: The entire point of the Jewel Dopant. Taking a Bicker Charge Break ([=CycloneJokerExtreme=]'s strongest attack to date) without so much as flinching is rather hilarious. While it displays no real offensive powers, it is not like it gives a rat's ass about anything everyone else has to offer. That is, until [[spoiler:[[AttackItsWeakPoint Philip finds out its weak point]], its "belt buckle", and hits said weak point with another Bicker Charge Break]].
* NonLethalKO: The first ''Kamen Rider'' series where they don't kill or even seal away the monsters; they're reverted back into their human forms instead.
* NotSoDifferent: Kirihiko loves the town of Futo as much as Shotaro does, he just has [[WellIntentionedExtremist a funny way of showing it]].
** Katsumi Daido tries doing this to Phillip in ''Double Forever'', [[spoiler:especially in regards to their both being "corpses".]] Further enhanced by the fact that Teenage Daido in the flashback scenes is played by Phillip's actor Masaki Suda.
** [[spoiler:The Commander Dopant to Ryu. They were motivated to get their powers by losing their family and the Commander uses this to try and make Ryu become a copy of him. Ultimately, the difference between the two is Ryu knows when to stop, in part thanks to Shotaro and Philip.]]
* NotSoStoic: [[spoiler:Turns out that the chief had a half-boiled streak too]].
* NotWhatItLooksLike: In "The L on the Lips", Shotaro is [[GenreSavvy the first]] [[LampshadeHanging to realise]] that [[MeadowRun running after another guy on a beach]] complete with DisturbedDoves [[HoYay could be easily misread...]]
* OfCorpseHesAlive: Whenever his mind is in Double's body, Philip is unconscious, so his lifeless body is a sitting duck. In "Find the C", nobody tried to interact with them, but Akiko had to make-believe they were napping sweethearts, so as not to draw attention on the bus.
* OfficialCouple: [[spoiler:Terui/Akiko, made just after the end of Ep 44.]]
* OhCrap: At the beginning of "The Tragedy Of Y" arc, when Ryu, Mikio, and Makura interrogate a suspect, and he almost jumps off the building, though Ryu managed to caught him by the ankle.
* OlderThanTheyLook: Mitsuru Matsuoka, who plays [[http://3.bp.blogspot.com/_tGahC12vdno/S_5FUUGdWpI/AAAAAAAABJQ/877X20NF6Ig/s1600/Eternal+news1.jpg Katsumi Daido]] in the Double Forever A to Z movie. Try to guess his age...[[spoiler: He's turning 40.]]
* {{Omake}}: A series of DVD shorts collecively called "Shotaro's Hard Boiled Delusion Diary".
** And the '''26''' Net Movies accompanying the theatrical release of ''Forever A to Z''.
* OminousLatinChanting: "The D was Seen" gleefully combines this with [[spoiler:the sudden, out-of-nowhere appearance of the Terror Dopant, preceded by his PrimalFear]].
* OneWingedAngel: The show brings out its giant CGI monsters as early as the second episode. The effect is somewhat lost when you consider that the T-Rex Dopant's is basically cobbled together from rubble. And the Anomalocaris, which, for some reason, is awfully fast also ''on land''.
* OneWomanWail: The prologue; the pupil and the boy, cornered at every side, transformed into Double out of desperation just as they're about to be blasted sky high. Next second; cue the music...
* TheOnlyOneAllowedToDefeatYou: Terui is extremely determined to be the one that defeats Isaka, and was ready to start an enraged fight with Double for Memory Breaking said villian. Isaka dodged it anyway, but still.
* OnTheNextEpisodeOfCatchPhrase: "This'll clinch it!"[[note]]"''Kore de kimari da!''"/"This is the (decisive) conclusion!".[[/note]]
** As well as an "On the Last Episode of Catchphrase" in the preview for the final episode: "Kore de owari da!" [[note]]"This is the end!"[[/note]]
* PatrickStewartSpeech: Philip's "Nobody's Perfect" speech to Shotaro.
* PensieveFlashback: The premise of ''Message for W'' in ''Movie Wars Core''.
* PersonalityPowers: The NEVER mercenaries from ''Double Forever'' end up with the Memory that best reflects their personality and fighting style: the sexy martial artist who hates cold gets [[color:red:Heat]], the [[TheBrute burly]] [[CarryABigStick staff fighter]] gets [[color:silver:Metal]], the CampGay [[WhipItGood whip fighter]] gets [[color:gold:Luna]], the ColdSniper gets [[color:blue:Trigger]], [[spoiler:and [[TheMole the woman who deceived Phillip into helping them]]]] gets [[color:green:Cyclone]].
* PerversePuppet: Getting its own story arc. As typical of the trope, it looks to be horrific.
* PhlebotinumOverload: Isaka's demise is a result of this.
* PickyEater: The Sweets Dopant, to the extent that she is revealed by reacting violently to Akiko's desserts (it's not even in LethalChef territory, just rank amateur). It's not played for laughs either.
* PlayingGertrude: Eldery Shotaro and Akiko in one of the Hardboiled Delusion skits where Shotaro imagines the detective agency in the future.
* PlugNPlayTechnology: The same Memories that turn Shotaro into Double can be used to give the Memory Gadgets a power boost if need be. Dopant Memories work with or without their own Driver gear, but with significantly different results. ([[spoiler:Gaia Memories used without a Driver "consume" their user, causing addiction and rapid personality degeneration]].) And "The S Terror" is the first time a Memory Gadget attaches to one of Double's weapons.
** "Farewell, N!" shows that if you don't have a bio-port to plug into, you shouldn't be playing the Memory game.
*** Which leaves us with the question, what if a Rider tried to use a Dopant or [[http://i14.photobucket.com/albums/a323/aaronhong/Kamen%20Rider/DoubleDeuce01.png Memory Gadget]] memory?
* POVSequel: ''Returns: Accel''. ''Eternal'' is an aversion, however - it serves as a prequel to TheMovie
* PowerGivesYouWings: Nasca Dopant busts this out in [[http://www.youtube.com/watch?v=9YUluam4YWQ his first real battle with Double]].
** In a strange example, the Quetzalcoatlus Memory ''itself'' has wings.
** [=CycloneJokerGoldXtreme=] also gains a fancy pair of wings in ''A to Z''. It's also the highest level of power Double's achieved.
* PowerLevel: In "Farewell, N!", Saeko mentions to her father that Kirihiko has attained the SuperSpeed powers of the Nasca Memory. Ryubee states that it means he has finally reached the second level of its powers. [[spoiler:Too bad we don't get to see him use them for much longer]].
** And in "The Likelihood of the G", [[spoiler:Saeko]] uses it and attains level 3, [[LawOfChromaticSuperiority complete with a sporty red color scheme]].
* PowerOfTrust: Detective Jinno turns out to have weaponized this quite unintentionally when he was a beat cop. When delinquents (like a young Shoutarou) would make up lies to avoid getting in trouble, he would believe them so completely that the liars would end up wanting to believe it themselves.
--> '''Shoutarou:''' He isn't easy to fool. He's ''skilled'' at being fooled.
* PowerWalk: Episode 32.
* PreviouslyOn: Done with a StringTheory, which was revealed in ''Movie Wars Core'' to be the creation of [[spoiler:Soukichi's old partner.]]
* PreAssKickingOneLiner: "Now, let us count your sins" usually precedes the beatdown of the MonsterOfTheWeek.
* PrivateDetective
* PrivateEyeMonologue: Shotaro's very first one started as a spoof, but following that, he drops a few lines here and there, and ''always'' at the end of every arc.
* PurpleIsTheNewBlack: Even though the Joker and Skull memories are all black, the color of their symbol and associated color-coded attacks are purple.
* RedemptionEqualsDeath: [[spoiler:Kirihiko]].
** [[spoiler:In "Goodbye to the E", the entire Sonozaki family seems significantly calmer and content in their version of the afterlife, inverting this trope into Death Equals Redemption for Ryubee and Saeko.]]
* RefugeInAudacity: Akiko using her slipper ''on a police detective'' in "Find the C". She takes it one step further in "The D was Seen" by barging ''into the police station'' as well.
** In "Who the K Needs", she breaks out a pair she calls "dowsing slippers" to search for an artifact left in a ruin-ish area. ''And they work.''
** Deconstructed by Terui Ryu, who's allowed to exact his personal agenda ''with Rider gear from Shroud'', despite being with the police, instead of say, being put through a psych evaluation following ''the death of his whole family''.
* RetroUniverse: Though he lives in a modern time, Shotaro styles his life after 40s' hardboiled noir.
* RichBitch: Wakana Sonozaki.
** "The Radio Q" [[spoiler:implies that she's more {{tsundere}}]].
* RightHandCat: Fitting of an evil mastermind, the head of the Sonozaki Family has one named Mick. It even has its own Gaia Memory and Dopant form: [[MegaNeko Smilodon]].
* RoaringRampageOfRevenge: A majority of the Dopants who can be classified JerkAssWoobie fall on this motivation, but special propos to [[spoiler:Kujo Aya]]/Triceratops Dopant in avenging her unjustly-persecuted lover and [[spoiler:Yukie Sudo]]/Yesterday Dopant for trying to avenge her murdered brother [[spoiler:Kirihiko, the [[WellIntentionedExtremist Nasca Dopant]]]].
* RobotBuddy: Almost like the Disc Animals of ''Series/KamenRiderHibiki'', our heroes have the "Memory Gadgets"; equipments that can turn into animal forms (Live Mode) with their own Memories.
** Stag Phone: A cellphone with flight and small attacks. Can summon the [=RevolGarry=] and perform a strange pincer blast with the Trigger Magnum.
** Spider Shock: Essentially a watch with a GrapplingHookPistol. Also fires tracking beacons and can shoot webs when connected to the Trigger Magnum in Luna Mode.
** Bat Shot: A digital camera which can place itself virtually ''anywhere'' and reveal invisible opponents with the Luna Memory. Attaching it to the Metal Shaft turns it into the Sonic Shaft, which can shatter objects; and attaching it to the Trigger Magnum allows it to fire a focused, precision shot.
** Fang Memory: A little dinosaur that allows Kamen Rider Double to access his MidSeasonUpgrade: FangJoker. It also serves as Philip's guardian. When attached to the Double Driver, it folds itself into the shape of a dinosaur head.
** Beetle Phone: Accel's cellphone that is the kabutomushi to the Double's Stag Phone's kuwagatamushi. Ryu uses it to spy on Shotaro and Philip at first, then later makes use of it as a cell phone and can remote-control Gunner A with it.
** Frog Pod: A CD Player dock for the [=MP3=]-like Frog Memory (read: iPod Shuffle) which records what the Frog Pod hears as a surveillance device.
** Denden Sensor: A pair of nightvision/infrared goggles that turn into a snail with a laser tripwire. Can see ''anything''.
* RunningGag: Shotaro and his "half-boiled" lifestyle.
** Jun dropping things.
* SaintBernardRescue: Episode 19 has a brief moment where [[http://www.youtube.com/watch?v=YHOEiCPU7JU Philip pretends he's a St. Bernard]] thanks to Wakana's radio show. Shotaro is not amused.
* ScarfOfAsskicking: The first appearance of the iconic scarf in quite a while. Only with Cyclone active, though.
** Nasca Dopant has one, modelled after Series/KamenRiderV3.
** Skull has one as well.
* SceneryPorn: During Akiko's dream in episode 30, we get to see Osaka's [[http://en.wikipedia.org/wiki/Tower_of_the_Sun Tower of the Sun]], [[http://en.wikipedia.org/wiki/Osaka_Castle its castle]], and the [[http://en.wikipedia.org/wiki/Tsutenkaku Tsutenkaku]], all in about 5 minutes.
* SharingABody: Though not [[Series/KamenRiderDenO the first]] to feature the idea, this is the first ''Kamen Rider'' series with two people merging into a single Rider.
* ShipTease: Akiko's had ship tease with Shotaro (particularly "The P's Game" and "Y's Tragedy") and Terui ("The P's Game" and "The O Chain"). [[spoiler:She and Terui become the OfficialCouple after "The O Chain", episode 44.]]
** ''Begins Night'' also hinted that Elizabeth has a crush on Philip.
** "The Radio Q" has some ship teasing between Philip and Wakana. [[spoiler:Which, like ''Series/KamenRiderDenO'', is also {{Squick}} Tease as it turns out that Philip and Wakana are [[BrotherSisterIncest brother and sister]]]].
** In "Y's Tragedy", Shotaro appears to develop feelings for Yuko, [[spoiler:who's really Yukie Sudo, the Yesterday Dopant.]] Delusion Diary #9 hints that he is prepared to wait for her [[spoiler:until she regains her memories.]]
* ShoeSlap
* ShortDistancePhoneCall: Philip and Wakana do this in "Client X".
* ShoutOut:
** If using Western naming order, Shotaro Hidari shares the initials of SherlockHolmes.
** In the first episode, Shotaro pulls out a copy of Creator/RaymondChandler's ''The Long Goodbye'', one of the quintessential hard-boiled detective novels.
** Philip's name is a reference for famed private eye Literature/PhilipMarlowe, the protagonist of ''The Long Goodbye''. [[spoiler:In fact, Sokichi Narumi named the amnesiac Philip directly after him]].
** The "Futo Irregulars" seem to be an analog to the Baker Street Irregulars from the ''SherlockHolmes'' series.
** Shotaro's first name may be based on the creator of ''Kamen Rider'', ShotaroIshinomori. Notably, though, the Kanji for "''Sho''" is different.
** The name 'DJ HURRY KEN' doubles as a PunnyName and a shout out to [[http://en.wikipedia.org/wiki/Ken_Hirai Ken Hirai]][[note]][[DontExplainTheJoke Ken Hirai = Hirai Ken = Hurry Ken]][[/note]].
** Ep. 29 is titled "Nemuri Hime [[LightNovel/HaruhiSuzumiya no Yuutsu]]".
*** Akiko's dream about turning into Double has the transform FX changed to say "Naniwa no Bishojo Kamen (Who Is that Beautiful Kamen)", a reference to ''Series/BishoujoKamenPoitrine''.
** The Beast Dopant has a wife named [[Disney/BeautyAndTheBeast Belle]].
*** [[spoiler:...who's also the Zone Dopant, able to [[BakuganBattleBrawlers fold into a tetrapod shape and act in a supporting role to the Beast Dopant]] in combat]].
** In ''Begins Night'', Sokichi says [[CodeGeass "Those who shoot should be prepared to be shot at."]]
** In "Y's Tragedy", Isaka says that the Yesterday Dopant found a way to counter the [[WithGreatPowerComesGreatInsanity insanity from Memory usage]] by draining the fluid buildup from the Memory and projecting it into other people to create a form of mind control. [[Film/X2XMenUnited Think he got that from Jason Stryker's case file?]]
** A reference to ''Literature/TheOldManAndTheSea'' is used as a password in "The O Chain". It's even described as "by [[Creator/ErnestHemingway Hemingway]]".
** In "Who The K Needs", Accel links up with the Turbuler parts and fights the Terror Dragon as a human torso mounted on a flight booster; this may be a ShoutOut to ''Anime/MobileSuitGundam'', where the Gundam had a near-identical configuration with the G-Armor (dubbed "Gundam + B-Parts" officially).
** The Hyper Battle video where they're dealing with a Donburi Dopant has Shoutarou, Akiko, and Ryuu go at it a'la ''IronChef'' in order to solve the case as Philip was too hungry to even go into the Bookshelves. To wit: Kitchen Garage instead of Kitchen Stadium, Philip dressing up in glittery clothes as the Chairman (although not as flashy as Kaga's wardrobe), and banging a gong.
*** And the Frog Pod doing the "battle commentary" with the voice of Shinichiro Ohta, ''IronChef''[='s=] floor reporter.
** During one of the "Hardboiled Deulsion Diary" {{omake}} shorts on the [=DVDs=], Shotaro has a daydream where the rest of the cast are hitmen after his life. Ryu ends up dressed like Duke Togo of ''{{Golgo 13}}'', complete with fake eyebrows and sideburns.
*** In the Net Movies released with ''Double Forever'', the logo for Isaka's segment '''is''' the logo for ''Series/{{House}}'', with "Dopant" replacing "House".
** At the beginning of ''The Gaia Memory Of Fate'', one of the people on the helicopter says "Kamen Rider" in perfect English and along the lines of [[Series/KamenRiderDragonKnight Dragon Knight's]] [[ByThePowerOfGreyskull transformation call]].
*** Also, in the same movie, before the duo becomes Double for the first time in the movie, Shotaro enters via bike and delivers a flying side kick. [[Series/PowerRangersMysticForce Now recall that time a similar hero did that]].
*** The NEVER uniforms resemble those given to [[Series/PowerRangersNinjaStorm several]] [[Series/PowerRangersSPD recent]] [[Series/PowerRangersOperationOverdrive Power Rangers]], and during one scene, where they're all together in Dopant Form (with Daido in Eternal's form), one can't help by think of PowerRangers. Bear in mind Koichi Sakamoto is on that set...
*** Ryuu[=/=]Accel's spin attack in episode 28 and against Weather and Nazca in ''Gaia Memory of Fate'' [[Series/PowerRangersRPM looks pretty familiar]].
*** ''W Returns: Accel'' adds the spinning of those bike-wheels on his legs as a defensive weapon.
** In another "Hardboiled Delusion Diaries" {{omake}}, Magician Akiko's magic show is called "Princess Akiko's [[Anime/OjamajoDoremi Magical Stage]]".
** In the final battle, Jun/Utopia tries to drain the power of W [=CycloneJokerXtreme=], but is physically harmed by the power being too much for him to absorb, much like in {{Kinnikuman}} when Buffaloman is burning up inside from absorbing Kinnikuman's Burning Inner Strength.
* ShoutOutThemeNaming: Carrying over the theme started in ''Series/KamenRiderDecade'' with '''Natsu'''mi (Summer) and '''Haru'''ka (Spring); '''Aki'''ko (Autumn), and the ''F Afterglow'' arc character '''Fuyu'''mi (Winter).
** In an extremely obscure example, the bands that perform the Rider's [[ImageSong image songs]] (Labor Day, Galveston 19, Florida Keys, and Wilma-Sidr) are all named after [[ShownTheirWork famous 20th century hurricanes]].
*** Wilma-Sidr is a double-theme naming, "Sidr" being a Category 5 Cyclone in the Indian Ocean.
*** And believe it or not, the recurring brand name [[http://en.wikipedia.org/wiki/Windscale_fire Windscale]] also counts.
* ShowWithinAShow: Shotaro and Philip's are huge fans of the radio show "Healing Princess", hosted by Wakana Sonozaki, who they don't realize is one of the villains.
** Played straight with ''Kaze no Saheji'', see DaytimeDramaQueen above.
* SignatureStyle: [[Franchise/PowerRangers Koichi Sakamoto]] has been invited back to Japan to direct several Toei projects, including ''W Returns: Accel''. Let's just say that other directors might not have gotten the ''hang'' of choreographing Accel Booster.
* SitcomArchNemesis: Mikio's deputy, Shun Makura, to Shotaro. Lampshaded all the way in "The W Search".
** Kirihiko and Wakana seemed to be this at first, but they got over it.
* SomedayThisWillComeInHandy: Santa-chan, another informant, gives Shotaro a bunch of miscellaneous crap in "Don't Lay a Finger on M", including a deck of cards. [[spoiler:Shotaro later plays a winner-take-all game of Old Maid, and won in the end with those same cards]].
* SpellMyNameWithAnS: Quite literally, in the show it's the Na'''s'''ca Dopant, not the Na'''z'''ca Dopant.
** Philip was subject to this as well. In the show, his "Gaia" Aura spells his name as "Philippe" while every magazine that prints the characters' names in English uses "Philip".
** The show's logo has "Kamen Rider Double" written clearly in English, while the English speaking fandom (and a fansubbing group) prefered "Kamen Rider W" (to where that fansubbing group hard encoded "Kamen Rider W" over the "Kamen Rider Double" in the logo). Part way into the show, the production company began using "Kamen Rider W" in English to refer to the show instead.
* SpitTake: Shotaro has two: one in the first episode when Akiko informs him that she's his new landlord and is evicting him, and another in the Gaia Memory Encyclopedia.
* SpookyPhotographs: A fusion of type 1 and 2 here. The [[http://img268.imageshack.us/img268/7698/97466882.jpg Sonozaki family photo]] [[http://img512.imageshack.us/img512/1852/1251002017477.jpg reveals them for what they really are]].
** Then played for laughs in the beginning of "Client X", when Dr Yamashiro walks into the agency while Akiko and Shotaro are too preoccupied with taking staff photos to notice him at all...until they see the resulting photos...
* StageMom: Akiko comes up against them in "The O Chain"
* TheStarscream: [[spoiler:Saeko Sonozaki spends a few episodes turning into this while being seduced by Isaka Shinkuro. She finally dares to attack her father in "Beyond R"...only to have Weather die on her, leaving her alone in her attempted coup]].
** [[spoiler:Until Jun Kazu shows up to help her ...]]
* StealthHiBye: Ryubee pulls the Stealth Hi on occasion, while Shroud tends towards the Stealth Bye.
* StockDinosaurs: The show follows this trope to a T with the T-Rex, Smilodon, and Triceratops Dopants. However it subverts the hell out of it when it comes to the [[http://en.wikipedia.org/wiki/Anomalocaris Anomalocaris]] and [[http://en.wikipedia.org/wiki/Quetzalcoatlus Quetzalcoatlus]] Dopants.
** It should be noted that for the Japanese, the Anomalocaris does fit this trope.
* StrawVulcan: Philip is somewhere between this and, appropriate for the detective theme, TheWatson.
* StringyHairedGhostGirl: The Virus Dopant, in a nutshell.
* StuntDouble: Used on occasion for Mick, because obviously there's no way they'd put a real cat in harm's way. The ''Double Forever'' net videos parody this during Kirihiro's "interview" with Mick: when Kirihiro gets mad and starts beating on Mick, it's obviously a plush cat. Then after Mick turns into the Smilidon Dopant and gets his revenge, Kirihiko himself turns into a human-sized dummy with a photograph of Kirihiko's face taped to the head.
* SubordinateExcuse: Kazu claims to be in love with Saeko and wants to be her business partner/subordinate [[spoiler:so he can help her defeat her father.]]
* SuperMode: A half-example (literally) in [[color:silver:Fang]][[color:purple:Joker]], making it the MidSeasonUpgrade form.
** Double's true SuperMode was later revealed to be [[color:green:Cyclone]][[color:purple:Joker]] [[color:silver:Xtreme]].
** Accel's is called [[color:mediumblue:Accel Trial]] and makes him the ultimate FragileSpeedster.
*** [[spoiler:Accel and Double's ultimate SuperMode is [=CycloneAccel=] Xtreme, and it's been Shroud's true goal all along.]]
*** [[spoiler:Double has an alternate version of [=CycloneJokerXtreme=] called [=CycloneJokerGoldXtreme=], where the Crystal Server in the middle of the suit is [[PaletteSwap colored yellow]] and he gains [[PowerGivesYouWings wings for flight]].]]
*** Accel also gains a new form, [[color:gold:Booster]], which he gets through a Gaia Memory Enhancement Adapter, giving him flight via jet boosters scattered along the arms, legs, and back, as well [[UpToEleven multiplying his power exponentially]]
* SuperpowerLottery: Inverted with [[spoiler:the Virus Dopant. Kirihiko thinks that its ability to manifest and act outside of its user's body makes it more deadly. It certainly ''seems'' that way at first, racking up a fairly large body count compared to previous Dopants...except then it's revealed by Saeko that this kind of manifestation ''drastically'' reduces the power of the Virus Memory, which, when un-nerfed, can kill entire cities effortlessly. Thanks to the state of its user, it's weak enough to only be able to put up a challenge for Double rather than kill him outright.]]
** Played utterly straight with [[spoiler:the Weather Dopant, who can tap into pretty much every [[ElementalPowers Elemental Power]] in the book. In his first episode alone he used PlayingWithFire, AnIcePerson, BlowYouAway, and ShockAndAwe, and the drowning murders imply he also has MakingASplash.]]
** The Nasca Memory when [[spoiler:Saeko uses it and unlocks stage 3.]] It has super-speed on level with Accel Trial and can actually outmuscle Xtreme.
** [[spoiler:Utopia]] is a particularly extreme example. [[spoiler:It draws power from other peoples' hopes, allowing it to do pretty much anything it wants. Such feats include nullifying gravity, stopping attacks by cancelling their motion, flinging around fire and electricity with ease, and even beating Accel so hard that it ''lit on fire'' and badly injured Terui '''through''' the suit.]]
* SuperPrototype: Inverted; according to [[AllThereInTheManual official info]], Skull and his Lost Driver are the prototypes for Double and his Double Driver. While Skull is more generally useful since it only requires one user, Double is more powerful and versatile.
* SurvivorGuilt: There's some evidence Shotaro has this with regards to his mentor; at least part of his stand-offishness with Akiko is that, as Sokichi's daughter, she's a constant reminder - especially when asking after her father.
* SweetTooth: The Sweets Dopant suffer from this.
* TakahashiCouple: Shotaro and Akiko are always at each others' throats but it's been implied a couple times that there might be an underlying attraction.
* TakeOurWordForIt: Jimmy's third and final performance - despite sticking with his "Spilk" music (and the obvious absence of any kind of TrainingMontage), he finally earns genuine applause just for "putting his true heart into it", but the audio is left out so we never hear a thing.
* TakeThat: The D[[spoiler:ummy]] Dopant in ''Begins Night'' is [[ScamReligion a bogus priest who's started his own movement with numerous celebrity believers.]] Either a dig at the ChurchOfHappyology, or the Japanese equivalent, [[http://en.wikipedia.org/wiki/Happy_Science the Happy Science movement.]]
* [[TakeUpMySword Take Up My Cool Hat]]: Shotaro's mentor is fatally wounded in the prologue, and passes on his NiceHat to Shotaro before he dies. Shotaro doesn't walk around wearing it after that though: He hangs it on the door to the ElaborateUndergroundBase and wears a different one.
** ''Begins Night'' mentions that Shotaro started out with no hat; [[LegacyCharacter he inherited his mentor's entire hat collection]].
** Judging by the Utopia arc's trailers [[spoiler:Shotaro finally considers himself worthy of wearing it.]]
*** It's his "Not playing around anymore." hat. [[spoiler: Shotaro took on Utopia sans transformation to foil his plot, armed with nothing but gadgets and style. He even blocked an attack USING the hat.]]
* TalkingWithSigns: Either the writing on Akiko's slippers are responding to this trope, or she's got dozens of pairs hidden someplace...
** Deconstructed in "The Likelihood of the G" with [[{{Hikikomori}} Kawai Toru]], who's dependent on writing in his notepad because he can't bring himself to speak up, much like [[Series/KamenRiderKiva another Hikikkomori]].
* TeensAreMonsters: EXE in the final episode, in which one of them claims that they are going to succeed the Museum. Now, seeing [[BlackWidow what]] [[BigBad the]] [[BitchInSheepsClothing Museum]] [[WellIntentionedExtremist is]] [[CatsAreMean made]] [[MadScientist of]], that's [[FridgeHorror saying something]].
* TeleportSpam: [[spoiler:The Zone Dopant]]'s shtick.
* TenMinutesInTheCloset: Dango and Chizuru [[InvokedTrope get locked]] [[MundaneUtility in the RevolGarry]] together in episode 8. This seemed to be the non-romantic type; making up results in them spending the next few minutes of the episode street dancing rather than any hugging or kissing.
* ThemeMusicPowerUp: "[[TitleThemeDrop W-B-X]]" plays precisely three times in the series, and every time it signaled incoming awesomeness. In [[Recap/KamenRiderDoubleE27E28TheDWasSeen Episode 28]], it started when Double and Accel fought the Weather Dopant together and performed a Double Rider Kick. In [[Recap/KamenRiderDoubleE47E48TheAbandonedU Episode 48]], it played when [[spoiler:Shotaro confronted Jun Kazu and kicked his ass '''without''' transforming.]] And it plays in [[Recap/KamenRiderDoubleE49GoodbyeToTheE the final episode]] over [[spoiler:Shotaro and Phillip's first post-reunion fight as Double as they kick the Energy Dopant's ass.]]
** Four times. In ''Double Forever'', it plays over [[spoiler:the transformation to [=CycloneJokerGoldXtreme=] and Eternal's subsequent ass-kicking atop Futo Tower.]]
** Each of the primary forms has their own theme music that goes along with them as well. [=CycloneJoker=] gets ''Cyclone Effect'', [=HeatMetal=] gets ''Free Your Heat'', [=LunaTrigger=] gets ''Finger On The Trigger'', and [=CycloneJokerXtreme=] gets Xtreme Dream.
* ThreeDMovie: Early in an investigation of a movie theater in "The Likelihood of the G", Shotaro and Akiko come across the film version of their favorite drama ''Saheiji of the Wind'', their favourite JidaiGeki series. In 3D, of course, perhaps as a nod to the popularity of the trend in theatres at the moment.
--> '''Shotaro''': Look at that...''Kaze no Saheji'': [[GratuitousEnglish The Movie]]! ''And it's even in 3D!!''
** Double's feature movie ''Double Forever'' was also shown in 3D, though not in all cinemas.
* ThisIsWhatTheBuildingWillLookLike: The second Futo Tower shown in "The Girl...A".
* [[strike:Tokyo]] [[TokyoTower Futo Tower]]: The prominent landmark for this season, topped with a MASSIVE windmill for good measure.
* TomboyAndGirlyGirl: A bit toyed with Queen and Elizabeth's duo; Queen falls more in {{Emo}}-{{Deadpan Snarker}} territory, Elizabeth plays her trope straight.
* TragicKeepsake: Shotaro still has the hat Sokichi gave him as he died [[spoiler:and a keychain that Kirihiko gave him before dying, telling Shotaro to protect the city]].
** [[spoiler:Yukie has been holding on to Kirihiko's scarf ever since his death]].
* TraintopBattle: "Don't Lay a Finger on M"; bus-top variant.
* TransformationTrinket: The traditional Rider Belt is still there, but the real crown goes to the Gaia Memories, not only for actually providing the powers, but also because ''both'' heroes and villains have them.
** On the right side, Philip's Memories grants an element or ability;
*** [[color:green:Cyclone]]: [[BlowYouAway Wind element]]. Releases a [[ExactlyWhatItSaysOnTheTin twister]] after transformation, and notably the only Memory to give Double a [[ScarfOfAsskicking Rider scarf]]. Default right-side Gaia Memory.
*** [[color:red:Heat]]: [[PlayingWithFire Adds flames]] to attacks and weapons.
*** [[color:gold:Luna]]: [[RubberMan Elasticity]][[note]]According to official data, "illusions", but "violation of physics" would describe it best.[[/note]]. The ability can also [[IncrediblyLamePun extend]] to the weapons.
*** [[color:silver:Fang]]: [[SpikesOfDoom Spikes/blades]]. Unique in that the resulting transformation uses Philip's body, rather than Shotaro's. Thus far only used with the [[color:purple:Joker]] Memory, allowing Double to [[TheSpiny grow blades on his body]].
** Shotaro, on the left half, holds the Memories associated with combat skills;
*** [[color:purple:Joker]]: [[BareFistedMonk Melee brawler]]. Default left-side Gaia Memory.
*** [[color:gray:Metal]]: MightyGlacier Mid-range fighter wielding an extensible rod called the [[SimpleStaff Metal Shaft]]. Possibly defense-oriented.
*** [[color:blue:Trigger]]: TheGunslinger. Uses a gun called the [[{{Handguns}} Trigger Magnum]]. Bullets can work differently depending on the current right-half's abilities.
** The [[color:silver:Xtreme]] Memory plugs in both sides of the Double Driver and turns Double into [[color:green:Cyclone]][[color:purple:Joker]] [[color:silver:Xtreme]]. It doesn't really appear to have any specific power, other than all the powers.
*** [[color:lime:Prism]]: AllYourPowersCombined. It's used to link the powers of four other Gaia Memories into one for use in [=CycloneJokerXtreme=]'s sword and shield combo.
** Ryu has three Memories at his disposal, each providing him with a different ability.
*** [[color:crimson:Accel]]: LightningBruiser. Ryu's only Gaia Memory that makes him transform into Accel, and as Accel into Bike Form.
*** [[color:gray:Engine]]: The Gaia Memory[[note]]According to the official data, it's not a real Gaia Memory and all of its powers come from a data link to the Accel Memory, though it's not quite a Giji Memory, either.[[/note]] for the [[CoolSword Engine Blade]] which gives it three different powers based on the different kinds of engines: Steam, Jet, and Electric.
*** [[color:mediumblue:Trial]]: Turns Accel into Accel Trial and a FragileSpeedster. Sacrificing physical strength and armor strength, it increases his speed a hundredfold. However, once the Maximum Drive is activated, it has to be finished [[HourOfPower in under 10 seconds]], elsewise the user's body is harmed. The Maximum Drive is activated through the stopwatch-like Maximum Mode. When in Memory Mode, has a starting-light display with three lights to indicate the different stages of the transformation when it's in.
** The Riders exclusive to the Double movies also have one Gaia Memory each.
*** [[color:indigo:Skull]]: Transforms Sokichi Narumi into Kamen Rider Skull and can be used in conjunction with his weapon, the [[{{Handguns}} Skull Magnum]].
*** [[color:palegoldenrod:Eternal]]: Transforms Katsumi Daido into Kamen Rider Eternal and can be used with his weapon, the [[KnifeNut Eternal Edge]].
* TheUnfavorite: This, along with a good case of [[WellDoneSonGuy Well Done Daughter Girl]], is what prompts Saeko's progression into becoming TheStarscream.
* UnflinchingWalk: From the trailer, Skull does this in the new Movie War Core
* UnholyMatrimony: Presumably, Saeko's former husbands (even [[spoiler:Kirihiko]]) were in on this, but now it's more of like "Unholy Engagement" in her case with Isaka, actually.
** [[spoiler:Or was. He's dead now.]]
* UpgradeArtifact: Quite literally in the Accel DTV, which introduces the Gaia Memory Enhancement Adapter. The Commander Dopant uses it, then it gets handed off to Ryu, giving him [[SuperMode Accel Booster]] Form.
* UpToEleven: Due to the movie introducing [[spoiler:an even ''stronger'' version of Xtreme form, Double has matched Kuuga in the number of forms.]]
* VerbalTic: Wakana with her "Tch", complete with closeup. Also borders on being a CatchPhrase by definition.
** Similarly (albeit more disturbing), Isaka too, see ShoutOut above.
* VictimOfTheWeek: With the twist that some of the clients are the Dopants themselves.
* VillainWithGoodPublicity: The Sonozaki family is, superficially, portrayed as rich, respectable benefactors of Futo City, with a daughter being a popular idol. [[spoiler:Despite being the presumed head of an illegal device syndicate. TheMafia references probably help]].
* WeaponOfChoice: Usually decided by Shotaro's Gaia Memories when the pair fuse into Double.
** Joker: BareFistedMonk
** Metal: SimpleStaff
** Trigger: {{Handguns}}
** [=CycloneJokerXtreme=]: [[InfinityPlusOneSword Sword]] [[BifurcatedWeapon and]] [[LuckilyMyShieldWillProtectMe Shield]].
* WeaponizedLandmark: [[spoiler:NEVER planned to turn Futo Tower into one - one that would kill off everyone in the city and turn them into undead, so to speak.]]
* WellIntentionedExtremist: The point of the Gaia Impact was to ensure the continued survival of humanity.
** Commander Dopant in ''W Returns: Accel''.
* WhamEpisode: "Client X". In the first part, [[spoiler:the man who erased Philip's memory is revealed, and the protagonists learn that it is the Sonozaki family behind the Gaia Memory business. Apart from that, Foundation X, another benefactor of the Museum, is revealed]]. Things go FromBadToWorse in the second part with the revelation that [[spoiler:Philip is Raito Sonozaki and him learning that Wakana is not only his sister, but a Museum Dopant]].
** The second part of "The Likelihood of the G". [[spoiler:Wakana can now access the Gaia Library and has a level of power ''leagues'' beyond Xtreme, Saeko has the rather inpressive Nasca Level 3, and it turns out every success that Shotaro and Philip had was allowed by Ryubee simply to gather information on them]].
** "The O Chain". Wowzers. In the first part alone, we find out [[spoiler:Weather got his Gaia Memory from Shroud. Shroud also reveals [=CycloneAccel=] Xtreme. And Shroud is Fumine Sonozaki, Ryuubee's wife and the mother of Saeko, Wakana, and Raito[=/=]Philip. Also Foundation X is behind the new generation of Gaia Memories that will be used in the upcoming movie]].
** The first part of "Who the K Needs" is probably the grand champion of them all now. What starts with a leadup to a wacky case quickly devolves into mindfuckery and realizing just how powerful Ryubee is. And worst of all is that there's still ''four'' episodes left for the writers to screw around with.
** The first part of "The Forgotten U". [[spoiler: The next time they become Double, Phillip will die.]]
** Let's just say, every episode after "Beyond R", as it's turned into a ''Wham Arc''.
* WhamLine: The above have some rather good wham lines.
** "Client X":
*** [[spoiler: '''Yamashiro''': They were...the memories of your (Phillip's) family.]]
*** [[spoiler: '''Yamashiro''': Your...real name is...Sonozaki...Raito.]]
** "The Likelihood of the G"
*** [[spoiler: '''Wakana''': It's the same power that you guys have, Raito.]]
** "The O Chain"
*** [[spoiler: '''Shroud''': It's true (regarding weither or not she gave Isaka the Weather Memory)]]
*** [[spoiler: '''Wakana''': That woman's real name is Fumine Sonozaki. She's Raito's and my...mother.]]
** "What The K Needs"
*** [[spoiler: '''Ryubee''': It is not a lie. You (Phillip) are dead. It happened 12 years ago.]]
** "The Forgotten U"
*** [[spoiler: '''Phillip''': The next time we transform into W...my body will be destroyed.]]
* [[WhatKindOfLamePowerIsHeartAnyway What Kind Of Power Is It?!]]: Unlike previous series which stuck to animal-themed (and sometimes plant-themed) MonstersOfTheWeek, some of the Gaia Memories produce Dopants with thematic concepts (like Violence or Death). Then there are the Dopants with powers from objects that are not animal, vegetable, or mineral (Money and [Fire]Arms). And then there are the Gaia Memories belonging to the Sonozaki Family.
** The Nasca Dopant's powers are themed after the [[http://en.wikipedia.org/wiki/Nazca_Lines Nazca lines]] in Peru. Apart from the flight afforded to him by the Hummingbird Geoglyph, his other powers (fighting with a sword and throwing laser bombs) don't have anything to do with the Nazca lines. His "Level 2" power of superspeed makes even less sense.
*** Level 3's strength could be attributed to the Giant.
** The Clay Doll Dopant shoots laser bombs out of her left arm. However, being shattered into billions of pieces is only a minor and temporary inconvenience as her Dopant body is made up of some kind of magical porcelain that puts itself back together.
** The Terror Dopant's powers turn out to be more straightforward than his daughters' and son-in-law's: he oozes PrimalFear that coats everything, including the [[PaintingTheMedium camera lens]]. His other powers may very well be [[EldritchAbomination Eldritch]] Tier.
*** [[spoiler:Turns out just ''seeing'' him use his powers is enough to make Shotaro paralyzed with fear at the very sight of him, [[HumanoidAbomination even when he's not transformed]]. If that doesn't qualify as [[EldritchAbomination Eldritch]] I don't know what does.]]
**** How about [[spoiler:the MONSTROSITY that erupts from his head!?]]
** Then there's the Taboo Dopant. Flying around and shooting laser bombs isn't [[http://en.wikipedia.org/wiki/Taboo taboo]]. Looking like [[http://i46.tinypic.com/2h8233b.jpg this]] probably is though. [[spoiler:However, killing your husband because he found out about your family's deep dark secret is definitely Taboo.]]
** Even Double himself isn't exempt from this. The Joker Memory is the intrinsic power of the Trump Card. How this applies to unarmed combat is up to anyone's interpretation.
** "Unarmed combat" also seems like a lame power because all his forms have hands and feet and are thus perfectly capable of punching or kicking. It comes off as copout of an explanation, even: they forgot to have it do anything and just said "it...uh...lets him hit stuff!" In the movie, [[spoiler: soloing as Kamen Rider Joker, Shotaro indeed fights without weapons and is really good at it, and he's far from the first Rider to get along just fine with no further combat abilities, but again...being stronger while suited is something all {{Toku}} heroes, including Double in other forms, can claim, and is thus hardly a satisfying answer to "what is Joker's special ability?"]]
*** [[Series/KamenRiderBlade If Chalice is an indicator, it applies quite well.]]
*** Actually, Joker increases his unarmed combat skills, and the difference is noticeable. When using Trigger or Metal, he's noticeably less skilled; Trigger just rolls around and shoots, and Metal just whacks stuff. Only Joker has notably advanced martial arts skills.
** It does work when you consider the way the two memories' abilities combine. Joker makes the ''other'' memory apply to the body instead of a weapon (Take Luna, for example. Luna Trigger has bendy bullets, Luna Metal has a bendy staff...'''only''' Luna Joker has bendy limbs.)
*** In episode 46 Shroud refers to Shotaro as a 'wild card'[[note]]kirifuda[[/note]], referring to his status as SpannerInTheWorks, so it could be a kind of PersonalityPowers.
** And Accel's Accel Memory is the intrinsic power of Acceleration. Who knew that the change of velocity with respect to time turned you into a motorcycle?
** [[spoiler:The Utopia Dopant's powers seem to be telekenisis, and a variety of ElementalPowers. As to what those have to do with a perfect society, your guess is as good as mine.]]
*** [[spoiler:At first glance, it's [[GravityMaster gravity manipulation]], but that's just his staff. It's actually RewritingReality by absorbing people's hopes.]]
** Skull also has a nice case of this. The bones that make up the face apparently translates into having a gun.
* WhatMeasureIsAMook: Despite ThouShaltNotKill being applied to ''everybody else'', nobody takes offense to the killing of [[{{Mooks}} Masquerade Dopants]]. Examples:
** [[color:silver:Fang]][[color:purple:Joker]]'s debut has [[spoiler:one very pissed Philip murdering an entire army of mooks in order to get to the Arms Dopant, and almost cut through Akiko as well. Once the drama ends, nobody really seems to care]].
** Then Accel casually cuts down a bunch of them in the serial right after he agrees not to kill anybody.
*** Of course, it's worth noting that Masquerades simply disintegrate when sufficiently damaged, as opposed to suffering a Memory Break like most other Dopants.
* WhatTheHellHero: Shotaro and Ryu's relationship is mostly based on calling each other out.
* WhenEldersAttack: What [[spoiler:old Shotaro]] does against the Old Dopant in episode 44. He [[CaneFu smacks him repeatedly with a cane]] while he's still in human form, taking him off-guard as he's mocking him.
** Ryubee Sonozaki counts.
* WhipItGood: [[color:gold:Luna]][[color:gray:Metal]] form wields the Metal Rod like a whip.
* WikiWalk: Whenever someone mentions a concept Philip isn't familiar with, he obsessively researches it until he knows everything about it. For example, he goes through one after Akiko mentions "Takoyaki". When Shotaro returns, all the whiteboards are covered in notes about it...[[CrowningMomentOfFunny and he's still far from done]].
* WindTurbinePower: the entire city of Futo, making it potentially the most eco-frindly city in fictional Japan
* WithGreatPowerComesGreatInsanity: See GRatedDrug, above. Improper use of a Gaia Memory, just like any other drug, can cause addiction and wear away at a user's mind/personality. Practice safe doping: Always use a Driver.
** [[PowerBornOfMadness With Great Insanity Comes Great Power]]: Negative emotions increase the effectiveness a Gaia Memory, and only by giving in to the corrupting influence can you reach your true potential as a Dopant. [[MorallyAmbiguousDoctorate Dr. Isaka]] Says: [[PeerPressureMakesYouEvil Cool kids don't use Drivers]].
*** [[FamilyUnfriendlyDeath And look where it got him]].
* WonderTwinPowers
* TheWorfBarrage: Saeko blasts [[spoiler:Kazu]] with constant fireballs in both his human and Dopant forms. He emerges completely unscathed and at one point on fire.
** [[spoiler: It helps that he is DeadAllAlong]].
* XMeetsY: It's a toku meets cyberpunk meets film noir, with the idealism bumped up.
* XtremeKoolLetterz: Played unbendingly straight with the Xtreme Memory.
* YankTheDogsChain: Since the show's tone purposely stays happy despite the FilmNoir aspects, none of the episode arcs are truly {{Downer Ending}}s, but the first six eps all have at least one person involved in the case end up without a happy ending in some way. [[spoiler:"The Abandoned U" [[BittersweetEnding takes the]] [[TearJerker cake, though]].]]
* YouHaveOutlivedYourUsefulness: [[spoiler:A subtle case with Shroud and Terui, wherein she deliberately lies and says he ran the motocross course fast enough to be able to handle Trial's power. He hadn't, and as a result she was sending him off to die. It didn't bother her, and she simply noted he wasn't any use to her anymore]].
* YouSuck: Lampshaded with the human form of Cockroach Dopant, who's clearly a {{Hikikomori}}.
* ZettaiRyouiki: Wakana Sonozaki in some episodes.
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--> Philip: "It appears we have new article pages not yet indicated in the main article, Shotaro. I'm going to run a search now."
--> Shotaro: "The first keyword is - 'CrowningMomentOfAwesome'."
--> Philip: "[[Awesome/KamenRiderDouble ...Got it.]]"
--> Shotaro: "Now, add the next keyword to our search...[[CrowningMomentOfFunny 'Funny'.]]"
--> Philip: "[[Funny/KamenRiderDouble Found it.]] Still a lot to narrow down here."
--> Shotaro: "The third keyword is...[[CrowningMomentOfHeartwarming 'Heartwarming']]."
--> Philip: "[[Heartwarming/KamenRiderDouble ...Done.]] Three entries found, Shotaro."
--> Shotaro: "Good work. Now to add the links to the main article and..."
--> Akiko: "WILL THE TWO OF YOU STOP WASTING VALUABLE OFFICE TIME?!" [[DopeSlap * THWAK* THWAK* ]]

-->"''This'll clinch it!''"
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