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Narumi Detective Agency

    Kamen Rider Double 

Shotaro Hidari & Philip: Kamen Rider Double

Kamen Rider Double

Portrayed by: Seiji Takaiwa

https://static.tvtropes.org/pmwiki/pub/images/daburu_1563.png

Shotaro Hidari was the protege of the late great Hardboiled Detective Soukichi Narumi. Philip is a mysterious boy possessing the True Gaia Memory and gifted with all the world's knowledge inside his head. Together, They Fight Crime! by Sharing a Body as Double.


  • All Your Colors Combined: As its name implies, the Prism Memory enables this.
  • All Your Powers Combined: CycloneJokerXtreme's Prism Bicker combines the power of the Cyclone, Heat, Luna, and Joker or Metal Memories to deliver a very potent Maximum Drive.
  • The Berserker: FangJoker was this during its first two uses, due to Philip's difficulty in controlling it.
  • Bizarre and Improbable Ballistics: The LunaTrigger form fires bullets that do not just home in on the target, but can also travel in curves as Double wants. It might as well be firing bullet-shaped explosive bees...
  • Blow You Away: The Cyclone Memory.
  • Body Horror: Most of Double's Joker-Based finishers involve his body splitting in two. Vertically.
  • Broken Record: MAXIMUM DRIVE MAXIMUM DRIVE MAXIMUM DRIVE MAXIMUM DRIVE MAXIMUM DRI-
  • Calling Your Attacks:
    • All of Double's Memory Breaks, as their two halves must be in sync to use one. Shotaro makes up the names himself, and Philip indulges him to allow his partner some fun. May be justified, as speaking in unison is a good first step to mental synch.
    • Averted with CycloneJokerXtreme's Memory Breaks. At first.
  • Catchphrase: Shotaro and Philip share not one, not two, but three of them:
    • "We are two detectives in one."
    • "We are two Kamen Riders in one."
    • "Now, count up your sins!"note 
  • Cool Bike: Double's HardBoilder. And like its owner, it can switch out the back half, forming either the HardTurbular hoverbike or the HardSplasher watercraft.
  • Elemental Powers: Philip's Gaia Memories allow access to Blow You Away, Playing with Fire and Lunacy.
  • Everything's Better with Spinning:
    • Episode 8. It's not called Heaven's Tornado for nothing.
    • FangJoker's rider kick.
    • CycloneMetal's Finishing Move.
  • Explosive Overclocking: Episode 27/28's Twin Maximum Drive. The effects of one person alone trying it makes its usage take on shades of Heroic RRoD as well.
  • Finishing Move: Several, all called Maximum Drives or Memory Breaks.
    • Joker Forms: With the exception of FangJoker, forms using the Joker Memory involve Double's body separating.
      • CycloneJoker: Joker Extremenote 
      • HeatJoker: Joker Grenadenote 
      • LunaJoker: Joker Strangenote 
      • FangJoker: Fang Streisernote 
    • Metal Forms: All Metal Maximum Drives involve empowering the Metal Shaft with an element.
      • CycloneMetal: Metal Twisternote 
      • HeatMetal: Metal Brandingnote 
      • LunaMetal: Metal Illusionnote 
    • Trigger Forms: All Trigger Maximum Drives involve empowering the Trigger Magnum's shots with an element.
      • CycloneTrigger: Trigger Aerobusternote 
      • HeatTrigger: Trigger Explosionnote 
      • LunaTrigger: Trigger Full Burstnote 
    • CycloneJokerXtreme: This form has a total of five finishing moves.
      • Double Xtreme: A tornado, larger than the one used by CycloneJoker, lifts Double into the sky and speeds them towards the foe.
      • Prism Break: A slash from the Prism Sword.
      • Bicker Charge Break: A slash from the Prism Sword after being charged up by the Bicker Shield using the Cyclone, Heat, Luna, and Joker Memories.
      • Bicker Finallusion: A laser blast from the Prism Bicker with the Cyclone, Heat, Luna, and Joker Memories. A variation with the Metal Memory replacing the Joker Memory creates a laser shield that protects against powerful attacks.
      • Double Prism Xtreme: A Twin Maximum Drive with the Prism Memory in the Maximum Slot; a bicycle kick.
    • CycloneJokerGoldXtreme: Golden Xtremenote 
    • A couple of other Maximum Drives without names have been performed with the Memory Gadgets.
      • Stag Phone with Heat Memory: Engulfs the Stag Phone in fire.
      • Bat Shot with Luna Memory: Sets off a series of flash bulb bursts that disorient the target.
  • Fusion Dance:
    • It's not really two people fusing into one, but more like the soul of one person goes into the other's body. So there's a limp body that needs protecting.
    • Played straight when Double's CycloneJokerXtreme form fuses both Shotaro's and Philip's bodies together.
  • Giving Someone the Pointer Finger: Before the beatdown.
  • Lunacy: The Luna Memory; Word of God gives its power as "Illusions", but it seems that stretching is the primary manifestation of this power. See the main entry for more information.
  • Incendiary Exponent: The Heat Memory can ignite HeatJoker's right fist or the Metal Shaft as HeatMetal for the Memory Break.

Shotaro Hidari/Kamen Rider Joker

Portrayed by: Renn Kiriyama (live), Seiji Takaiwa (suit)

https://static.tvtropes.org/pmwiki/pub/images/shotarokun_7617.png

Shotaro was the protege of the private detective Soukichi Narumi. Upon the events of Begins Night he takes up on his mentor's mantle, solving Dopant cases. His Gaia Memories, featured on the left side of Double, grant Double a weapon or a fighting style. In the second movie, he takes on the mantle of Kamen Rider Joker after Philip is kidnapped, using a Lost Driver and the Joker Memory to transform. He resumes the mantle of Kamen Rider Joker in the series finale upon Philip's disappearance.


  • Arc Words: "Hard-boiled", what with him being a private detective and all. It makes its way into his bike, the Machine HardBoilder.
  • Badass Normal: Aside from having the Double Driver and training in detective work, Shotaro is more or less a normal human being when not Double. Which is why he can be affected in all manner of negative ways by the attacks of some Dopants such as Old and Terror, which both Philip and Terui can shrug off due to their "unique physiologies", as Shroud puts it.
    • Carries over into his transformation as Kamen Rider Joker. Not only does he have no special powers or weapons outside of enhanced strength, supplementary materials show that stats-wise it is in every way weaker than CycloneJoker. Doesn't stop him from kicking all kinds of ass with it.
  • Bare-Fisted Monk: When using the Joker Memory in the Lost Driver to become Kamen Rider Joker.
  • Berserk Button:
    • Don't you dare make anyone cry in his presence. In particular, the sight of someone crying has lead him to threaten Nasca to never make the children of the city cry and also to attempt a potentially lethal suicidal Twin Maximum Drive when Ryu breaks down in tears after Isaka gives him "The Reason You Suck" Speech about why he is too weak and pathetic to ever defeat the Weather Dopant.
    • Futo Detective chapter 1 shows that he's gotten so sick of being called "half-boiled" that any phrase with the prefix "half-" (like "half-hearted") gets on his nerves.
  • Cannot Spit It Out: He can't bring himself to tell Akiko about her father's death, nor can he tell a little girl her father is in fact dead and not Double. The Movie has Akiko finding out anyway, but she still wants Shotaro to openly say it to her. In the Director's Cut of the film, there's a new scene where Shotaro promises to sit down with Akiko and tell her everything about her father after they resolve the issue with the Dummy Dopant.
  • Red Oni, Blue Oni: The red to Phillip's blue
  • Can't Catch Up: Shotaro gets this after Philip's power boost from the Xtreme Memory. He does manage to get better, unlocking their Super Mode in the process.
  • Cartwright Curse: A non-lethal variation, but every single time he shows interest in a woman, she's either the Monster of the Week or simply doesn't notice.
  • Chivalrous Pervert: He's going to do nearly anything for a lady he fancies. Taken to its logical conclusion during the Invisible Dopant arc, wherein Lily Shirogane lands on Shotaro in an, er, compromising pose.
  • Dark and Troubled Past: Somewhat implied in the Jewel Dopant arc, where his flashbacks show him repeatedly running away from Jinno back when the latter was a beat cop.
  • Large Ham: Look at his facial expressions. Look at them.
  • Master of None: As Kamen Rider Joker.
  • Meaningful Name: His surname literally means "left", and he's the left side of Double.
  • My Greatest Failure: Sokichi's death, which Shotaro thinks is his fault because he went against direct orders from the boss. Addressed quite directly when the dying Sokichi passing on his cool hat; Shotaro says he's not ready for it, to which Sokichi responds "Then become a man worthy of wearing it." In the penultimate episode, Shotaro pulls the hat off the wall and wears it when he confronts Kazu, showing that he's finally gotten past the guilt.
  • Private Detective: Almost the Hardboiled Detective variety.
  • Private Eye Monologue: He has a penchant for these and usually ends up saying them out loud when he shouldn't. Every arc usually ends with one.
  • Running Gag: His "Half-boiled" lifestyle, used to mock his self-proclaimed hard-boiled image.
  • Small Name, Big Ego: A mild version; he's somewhat competent, just not as hardboiled as he thinks he is.
  • Spanner in the Works: Both to Shroud's plans, initially and later to Ryubee's. Ironically Shroud would end up relying on Shotaro being this to Ryubee, calling him a Wild Card. It's not all good, though; this trope does take a dark take when he screws up his mentor's plan through rescuing Phillip, which eventually cost Narumi his life.
  • Wild Card: Well, he IS Kamen Rider Joker. As it turns out, Shotaro's presence screwed with a LOT of people's plans.

Philip (Raito Sonozaki)

Portrayed by: Masaki Suda

https://static.tvtropes.org/pmwiki/pub/images/philipkun_7998.png

Philip is a mysterious boy, possessing the True Gaia Memory. He was rescued by Soukichi Narumi and Shotaro during the events of Begins Night. He aids Shotaro in solving Dopant cases by accessing the Gaia Library, allowing him to look up endless amounts of information. This ability also lends itself to his obsession with research. His Gaia Memories, on Double's right, grant him an elemental power, or in FangJoker's case, an upgrade. Is kidnapped in The Movie for NEVER's plans, yet Shotaro rescues him and the two defeat Kamen Rider Eternal. Later, Philip is revealed to have died twelve years prior to the series, being resurrected as an avatar of the Gaia Memory. Due to this and Ryubee initiating the Gaia Impact, which eventually failed, Philip slowly broke down into data, until a transformation into Double would make him disappear forever. However, Wakana eventually learns the truth, sacrificing her own body to provide a way for Philip to regenerate in the recreates Xtreme Memory.


  • Adaptation Dye-Job: Has green hair the sequel manga.
  • Attractive Bent-Gender: See Disguised in Drag below.
  • Big Eater: Philip will do this for the sake of his research.
  • Bishōnen: So much that some people new to the show mistake him for a girl at first. At one point he even dressed as Wakana and even Akiko was bluffed at how convincing he was.
  • Catchphrase: "Fascinating!"note , as well as "Bingo!" as a minor one.
  • Cute Bookworm: Shy? Not exactly. Vulnerable? Depends. Cute and brainy? Definitely. Also doubles as Badass Bookworm.
  • Red Oni, Blue Oni: The blue to Shotaro's red
  • Deadly Upgrade: FangJoker set Philip's mind on fire at first, despite it taking the protagonists two minutes after its television debut to get proper control over it.
  • Disguised in Drag: Except for his voice, he makes for a very convincing Wakana. Well, his clothing is marketed towards women... It also helps that Philip and Wakana are siblings.
  • Everything's Better with Dinosaurs: The Fang Memory, made to protect him, has a Velociraptor-like Live Mode, and allows access to the spiny FangJoker form. Fang also takes the shape of a dinosaur head when connected to the Double Driver.
  • Extreme Omnivore: Philip develops a taste for... vinegar, after Akiko used it a couple of times on him as an all-purpose elixir.
  • Expy: After he was revealed to be Dead All Along who was revived through otherworldly means, he is also one to Yui Kanzaki. However, unlike her, he gets better after he's revived in the final episode.
  • Go-Go Enslavement: In Forever A to Z, when Phillip got captured by NEVER, they dressed him up in one of their uniforms.
  • Hair Decorations: Freakin' binder clips.
  • Heterosexual Life-Partners: With Shotaro, at least by the end. They even call each other "partner"note .
  • Heroic RRoD: His body starts to disintegrate after the initial plan for Gaia Impact is ruined.
  • Immortality Begins at 20: Delusion Diary #11 hints that Philip will forever remain seventeen years old because he's composed of the Earth's data.
  • Improbable Hairstyle: Very noticeble in episode 16. His hair looks messy after taking off his motorcycle helmet, but in the next shot it's as perfect as always.
  • Instant Expert: Every now and then the data Phillip searches for will stick in his head for a while.
  • Meaningful Name: His real name is Raito Sonozaki, and he's the right side of Double. His name also references Philip Marlowe.
  • Of Corpse He's Alive: Whenever his mind is in Double's body, Philip is unconscious, so his lifeless body is a sitting duck. In episode 7, 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.

  • Phlebotinum Breakdown: After the failed Gaia Impact, Philip's body is returning to data, hastened by transformation.
  • Pre Ass Kicking One Liner: "How thrilling!"
  • Scarf Of Asskicking: The Cyclone Memory comes with the iconic scarf, known as the Windy Stabilizer according to supplementary materials.
  • Spell My Name with an "S": His name is spelt as "Philippe" in the aura that surrounds his body when he enters the Gaia Library, but now Toei seems to have gone with Philip.
  • Touched by Vorlons: His encounter with the Xtreme Memory gave him a huge power boost that Shotaro can't keep up with. Not to mention that he died as a child and the "green light" of the True Gaia Memory revived him, along with the ability to access the Gaia Library.
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    Akiko Narumi 

Akiko Narumi/Terui | Actor: Hikaru Yamamoto

Akiko is the Boss's daughter, coming in to replace her father. As Shotaro's landlady she proclaims herself as the Chief of the Narumi Detective Agency, specializing in Dopant cases.

  • Armed Legs: Played for laughs with her slipper.
  • Babies Ever After: By the events of the Chaser special, she and Ryū have a daughter named Haruna.
  • Berserk Button: Akiko will cop to the beautiful part, but she's no middle-schooler!
  • Big Eater: Can wolf down enormous quantities of sweets
  • Big "NO!": After giving word of her treat to two men whose appetite she knows nothing about.
  • Catchphrase: "No one told me about this~!"note 
  • Crouching Moron, Hidden Badass: She as actually quite the competent detective, when the chips are down.
  • Did You Just Flip Off Cthulhu?: Slipper-slaps Clay Doll Dopant, just after the latter's upgrade process.
  • Happily Married: Subverted for a while in Accel's V Cinema. She got better afterwards.
  • Iconic Item: Her slipper.
  • The Idiot from Osaka: Has shades of this, given her quite black and white view of the world, but she does keep Shotaro focused on the case.
  • Kansai Regional Accent: Akiko refers to herself using the uchi- pronoun. It does help that her actress Hikaru Yamamoto is from Osaka just like her character.
  • Like Father, Like Son: Even though she's mostly a goofy and earnest girl, some of her father sometimes shines through in her personality. Shotaro even sees her as her father momentarily in Episode 10, where she smashes a chair into the Sweets Dopant she'd previously been terrified to tears of because it made the mistake of trying to attack her client.
    Akiko: Don't lay a finger on my client!
  • Manic Pixie Dream Girl: One that Shotaro doesn't want in his life.
  • The Napoleon: Don't call her a middle-schooler (but she'll gladly be called beautiful).
  • Older Than They Look: Shotaro often calls her a middle school student, but Akiko is 20 years old.
  • When You Coming Home, Dad?: Her relationship with her father was like this when she was a child, with Akiko becoming upset that he was too busy to visit her, including on her birthday (though she wasn't aware at the time that he was a Kamen Rider.)
  • Official Couple: With Ryu.
  • Shoe Slap: Akiko's slipper-slap acts as a Dope Slap (on Shotaro ), as a Get a Hold of Yourself, Man! (on Philip in episode 4), then finally gets played straight (used on Wakana as Claydoll Dopant).
    • In Ep. 14, Shotaro gets payback by hitting her with her own slipper.
    • In a more meta example, she combines the slipper slap with Percussive Maintenance in the music video for the opening theme song. The results are bizarre, to say the least.
    • Durning her dream in the Nightmare arc, her slipper serves as CycloneJoker's primary weapon, and she beats the crap out of the Nightmare Dopant with it (or tries to, at least).
    • And she manages to outdo herself yet again in episode 40 by slapping Wakana in her Claydoll form who had just received the Gaia Progressor.
    Sokichi Narumi/Kamen Rider Skull 

Sokichi Narumi/Kamen Rider Skull (Crystal) | Actor: Koji Kikkawa

Sokichi Narumi was Shotaro's boss, who taught the young man the trade of a Private Detective. During a mission to liberate a young man he dubbed Philip, he was shot to death. The events of Movie Wars 2010 reveal that he was Kamen Rider Skull, while Movie Wars CORE is a Whole Episode Flashback showing him as Skull Crystal ten years before the Double TV series.

Tropes that apply to him in general

Tropes exclusive to him as Kamen Rider Skull

  • Badass Biker: OH YEAH!
  • Cool Bike: The SkullBoilder, which is a black version of the HardBoilder.
  • Cool Guns: Skull Magnum.
  • Finishing Move:
    • Skull Punishernote 
    • An unnamed Rider Kick executed with the Skull Memory in the Maximum Slot, which creates an energy skull that Soukichi kicks towards the Dopantnote .
  • Super Prototype: Skull is the prototype for Double, best illustrated by its being a jack-of-all-trades combination of Shotaro's Memories (melee brawler like Joker, good defense like Metal, The Gunslinger like Trigger).

Futo Police Department

    Ryu Terui/Kamen Rider Accel 

Ryu Terui/Kamen Rider Accel

Portrayed by: Minehiro Kinomoto (live), Eitoku (suit)

https://static.tvtropes.org/pmwiki/pub/images/ryukun_7267.png

Ryu Terui is a police superintendent assigned to the Futo Police Department's Paranormal Crime Investigation Division, and is thus Jinno and Makura's superior. His family was murdered by a man with a W memory, giving him a motivation to exact revenge. When he meets up with the enigmatic Shroud, she gives him his gear, allowing him to transform into Kamen Rider Accel.

Tropes that apply to him in general

  • Babies Ever After: His last scene in the Drive Saga V-Cinema has him talking to Akiko on the phone, and the conversation reveals that they have a daughter, Haruna.
  • Badass Biker: Let's see: his attire completely fitting of a biker (leather jacket and pants, riding gloves and boots), he rides around on a motorcycle that's not a Rider Machine (and a Ducati at thatnote ), he has a motorcycle Motif as a Rider, and he can become a bike while transformed into Accel.
  • Berserk Button: He won't listen to reason once the Weather Dopant comes calling. Learning to rein himself in whenever Weather baits him is part of his Character Development.
  • Big Brother Instinct: Flashbacks showed that Ryu's sister was very important to him, and even was the one who gave him the necklace he wears in the series. One episode arc has him helping out a victim because she resembled his sister to a T.
  • Catchphrase: Four of them.
    "Don't question me."note 
    "Now, let's break away!"note 
    "Despair awaits you at the finish line."note 
    "It's time for your despair!"
  • Cool Bike: Ryu's rad red Ducati 999, Diablossa.
  • Death by Origin Story: One that mirrors V3's, natch.
  • Death Seeker: Ryu becomes one when he finally tracks down Dr. Isaka. Shotaro calls him out on it, and he eventually gets over it.
  • Happily Married: With Akiko during the events of Movie War Core.
  • Homage: His character design mirrors that of Kaneda. Also, his Rider armor is red and has a monoeye, he holds a high rank despite being young, and is rivals with one who has a W crest... Char Aznable?
  • Irony: While his Kamen Rider form emphasizes speed, he has the slowest henshin phrase as he says it in a Punctuated! For! Emphasis! manner.
  • Love Redeems: He believes his love for Akiko helped him overcome his craze for vengeance.
  • Meaningful Name: He wears bright red and has fire-themed powers, and his name means 'Dragon Shining-well'.
  • Official Couple: With Akiko.
  • The Only One Allowed to Defeat You: For the Weather Dopant.
  • Only Sane Man: Once he gets over his dream of vengeance, Ryu is probably the most sensible main character compared to everybody else.
  • Punctuated! For! Emphasis!: "Hen... SHIN!"
  • The Rival: Ryu initially presents himself as though he'll be one, aided by this being the default relationship of nearly all prior secondary Ridersnote , who often would hate and antagonize the main Rider for most if not all of the show. Ryu looks like he'll be the same way, as someone whose moral stance and personality begin fundamentally opposed to Shotaro's, but he undergoes enough Character Development in his debut two-parter alone to completely avert the formation of a rivalry. The two instead become genuine friends, setting the new standard for nearly all secondary Riders going forward.
  • Tranquil Fury: How he ends up ultimately defeating Isaka.
  • The Worf Effect: Ryu suffers a few beatings to showcase the power of some of the stronger Dopants, most notably in the final act against both the Terror and Utopia Dopants.
  • Unexpected Character: He teams up with Shinnosuke and Gō in the Drive Saga V-Cinema.

Tropes exclusive to him as Kamen Rider Accel

https://static.tvtropes.org/pmwiki/pub/images/accel_755.png
  • Body Horror: While the transformations of Gaia Memory-using Riders are complete alterations of their bodies, it's usually not obvious compared to the blatantly inhuman Dopants. Accel's Bike Form, however, requires contorting his body in some rather unsettling ways.
  • Cool Bike: He can become one himself when he assumes Bike Form. Granted, it's all Conspicuous CG, but still Rule of Cool.
  • Cool Sword: Engine Blade. Although it is quite heavy for him to wield when he isn't transforming.
  • Finishing Move: Several:
    • Accel: Accel Glanzernote 
    • Engine: Four variations:
      • Dynamic Ace: The EngineBlade blasts a giant letter A out of the blade into the enemy.
      • A-Slasher: Accel uses the EngineBlade to make three slashes in the shape of the letter A, be it a birds eye view or in front of him, to attack.
      • Engine Bike Dasher: Accel transforms into Bike Form and then drives straight through the target.
      • (Unnamed): Accel spins around while slashing multiple targets before stopping a moment to spin into the opposite direction (still slashing) and then stops again to finish them off with normal slashes.
    • Cyclone: Accel performs a wind-powered slash with the EngineBlade.
    • AccelGunner: Gunner Full Breaknote 
    • AccelTurbuler: AccelTurbuler Phoenixnote 
    • Trial: Machine Gun Spikenote 
    • Trial / Engine: Machine Gun Slashernote 
    • AccelBooster / Engine: Boost Slashernote 
  • Fire, Ice, Lightning: Accel's Engine Blade has settings for steam, fire, and lightning, representing three types of engines (Steam, Jet, and Electric).
  • Fragile Speedster: Accel Trial loses much of Accel's armor in return for moving at Super Speed.
  • It Was a Gift: All of his gear was given to him by Shroud.
  • Juggle Fu: Part of Machine Gun Spike. He starts the Trial Memory's countdown, throws it ahead of him, runs up to his opponent and kicks them an insane amount of times, then catches the Trial Memory on its way down.
  • Mighty Glacier: Downplayed. Despite having a heavier armor compared to his two future form, Trial and Booster, he wasn't hindered by the restricted mobility and can still move as if he is a Lightning Bruiser.
  • Super Mode: By upgrading the Accel Memory with the Gaia Memory Enhancer Adapter, he gained Accel Booster in the process.
  • Super Speed: Courtesy of Accel Trial.
  • Zorro Mark: Invoked with one Engine Blade Finishing Move, down to the three-cuts gimmick (marking an A instead of a Z).
    Detective Mikio Jinno 

Detective Mikio Jinno | Actor: Takeshi Nadagi

Detective Jinno is a friend of Shotaro's, frequently letting him deal with Dopant cases. He is never seen without his trademark back scratcher.

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    Detective Shun Makura 

Detective Shun Makura | Actor: Shingo Nakagawa

Makura is Detective Jinno's rookie partner, who usually quarrels with Shotaro.

The Museum

    Ryubee Sonozaki 

Ryubee Sonozaki/Terror Dopant | Actor: Minori Terada

The paterfamilias of the Sonozakis, he masterminds the entire Gaia Memory operation, using it to weed the weak-minded adults of society. As the Terror Dopant he can produce deadly liquids, literally make people fearful, and summon a dragon from his headdress. After Double defeats him with the Double Xtreme Maximum Drive, he returns to the burning mansion, dying in a maddened state.

  • Affably Evil: Somewhat.
  • Ambition Is Evil: Ryubee's ambitions cost him and the rest of his family everything. Some of them even die more than once for his goals.
  • Big Bad: He's the driving force of the primary antagonists, but he ends up getting supplanted as the final fight by Jun Kazu.
  • The Chessmaster: Everything he does is in the name of his goal of making everyone on the planet connected to the True Gaia Memory like Philip was to prevent an extinction event from ever occurring.
  • Chewing the Scenery: "XTREEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEME!"
  • The Don: The Sonozaki family operate Museum much more like a Mafia than a Yakuza, despite operating out of Japan.
  • Embodiment of Vice: Greed, seen in his lavish lifestyle as king of Fuuto's underworld and the ambitions that tear his family apart.
  • Evil Laugh: Not just a habit of Ryubee's, but an integral part of the Terror Dopant's schtick.
  • Go Out with a Smile: Ryubee's mind breaks along with the Terror Memory in "What The K Needs", causing him to walk back into the Sonozaki mansion as it collapses around him and reminisce about his family in happier times.
  • Nice Hat: Has a Headpiece of Doom when in his Dopant form. It can even turn into a floating monster the size of a house!
  • Nightmare Fuel: Taken rather more literally than most examples: as the Terror Dopant, the fear-inducing ooze he produces in vast quantities resembles an oil spill.
  • Papa Wolf: On the surface, his behavior towards Wakana is this, in contrast to his treatment of Saeko. The truth is more complicated.
  • Social Darwinist: While using the Gaia Memories to weed the weak-minded out of society isn't his aim per se, he certainly doesn't mind it as a consequence.
  • Stealth Hi/Bye: Capable of these without involving Gaia Memories.
  • Supernatural Fear Inducer: His Terror Memory's main power, creating fear in others.
  • Tragic Villain: His Fatal Flaw of ambition ultimately costs his family their happiness and unity, as well as his sanity and, ultimately, his life, as he spends his final moments laughing like a madman in his own burning, crumbling house. He'd be a good fit in a William Shakespeare play.
  • Villainous Breakdown: His Terror Memory being destroyed along with his entire scheme being thwarted just as it was about to succeed causes him to snap. He dies dancing blissfully as the Sonozaki mansion is burning to the ground around him, laughing insanely.
  • Well-Intentioned Extremist: Driven by a fear that humanity would one day become just as extinct as all the long-gone species in his museum, Ryubee set about a plan to meld humanity with the Earth itself.
  • Xanatos Speed Chess: Implied between him and Shroud.
  • You Have Outlived Your Usefulness: To his wife, of all people.
    Saeko Sonozaki 

Saeko Sonozaki/Taboo Dopant/Level 3 Rnote -Nasca Dopant | Actor: Ami Namai

Ryubee's elder daughter, assisting her father in the Gaia Memory business. She marries Kirihiko the Gaia Memory salesman. As the Taboo Dopant she can fly and shoot energy. She turns on him, killing him after he has a Heel–Face Turn. She then got interested in Dr. Shinkuro Isaka, the Weather Dopant, before his untimely demise. After losing the Taboo Memory to Mick, she recovers the Nasca Memory and uses it, unlocking level 3 until she is defeated by Wakana's Claydoll Xtreme.

  • Black Widow: She's killed most of her fiances and husbands off, including Kirihiko.
  • Cartwright Curse: Saeko just can't catch a break with her love interests, each of them dying over the course of the series. Mind, Kirihiko was her fault entirely, but Isaka and Jun were definitely out of her hands.
  • Chickification: She goes through this after taking up with Isaka, though it seems like she's doing it on purpose to make herself seem more attractive.
  • Embodiment of Vice: Lust, going through three romantic interests over the course of the show. It's stated that she's gone through many, many more before them, disposing of her partners once they bore her.
  • Enemy Mine: Versus Utopia.
  • Even Evil Has Standards: Even Saeko is rather uneasy about Weather modifying Wakana's Driver to not let her safely transform.
  • Evil Genius: Also a bit of The Dragon, given that she killed off the Boss in the premiere and fights Double at times.
  • Meaningful Name: Saeko means cold child, and she spends the series being cold and antagonistic to Wakana.
    • Nevermind how it's pronounced...note 
  • Palette Swap: After losing the Taboo Memory to Mick and having her Gaia Driver destroyed, she starts to use Kirihiko's Nasca Memory, proving far more compatible with it than Kirihiko ever was.
  • Pyrrhic Victory: While she manages to survive the downfall of the Museum and Ryubee's death, she loses the Nasca Memory after being defeated by Claydoll Xtreme.
  • The Starscream: For most of the first two acts of the series, it was hinted that she had bigger plans for the Memories beyond those of her father. "Beyond R", the conclusion of the second act, shows her and Isaka first plotting to take Ryubee down and then making their move. Isaka didn't survive, and Saeko went on the lam.
  • Thicker Than Water: Subverted for the majority of the series; though Saeko doesn't openly hurt her family for the most part, she harbors a very strong grudge towards Wakana, and she develops similar feelings towards her father in turn. However, once the family and the Museum is in ruins, and Jun attempts to retrieve Wakana to forcibly restart the Gaia Impact attempt, she gives her life attempting to stop him, making Wakana leave for safety.
  • The Unfavorite
  • Unholy Matrimony: Marries Kirihiko early in the show, but doesn't love him any more than the various other suitors she's wed and killed. Her romance with Isaka, however, is genuine.
    Wakana Sonozaki 

Wakana Sonozaki/Clay Doll Xtreme Dopant | Actor: Rin Asuka

The younger daughter of Ryubee, she is a popular idol around Futo, to the point of having her own radio show. Is the least interested in running the family business. As the Clay Doll Dopant she can shoot fireballs from her arm and reform after being broken into pieces. Her Driver was tampered with by Dr Isaka, which now left her mind open to the madness induced by Gaia Memory usage. Her father also manages to fully turn her to evil just as she plans on escaping Futo with Philip, turning her into the new Dragon. She seemingly dies in the wake of the Sonozaki Mansion's destruction, yet her body was recovered by Jun Kazu to be used in Foundation X's plan.

  • Astonishingly Appropriate Appearance: In her first appearance, Wakana wears her hair in a style very similar to her Claydoll Dopant form's head design.
  • Bitch in Sheep's Clothing: Before she underwent Character Development.
  • Brainwashed and Crazy/Mind Rape: What her father does to her.
  • Catchphrase: "Why must you anger me?". Also, see Verbal Tic below.
  • Chewing the Scenery : She copies her father's "XTREEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEME!" when she unlocks her Super Mode.
  • Dark Chick: Given that she's the least interested in running the family business... Until Saeko rebels, and Ryubee promotes Wakana into The Dragon.
  • Devil in Plain Sight: Despite being one of the Museum Dopants she has fans in Shotaro and Philip, who listen to her radio show.
  • Driven to Madness: After her Driver is tampered with by Isaka, she gradually becomes mad. While Wakana adjusts to avoid the impairing effects of this, her personality takes a permanent turn for the worse.
  • Embodiment of Vice: Envy, both in the sense of wanting to escape her family's obligations and her eventual usurpation of the Gaia Library for herself. It's appropriate that her Super Mode comes with a whole lot of green light.
  • Evil Costume Switch: Before being brainwashed, she used to wear bright-colored clothes. After that, she switches to dark colors.
  • Heel–Face Revolving Door: Following the The Radio Q arc (Ep. 13&14), Wakana began to regret being involved with the Museum and being the Clay Doll Dopant. Then during the The P Game arc (Ep. 25&26) she directly attacks her sister due to Isaka's influence. Then in the Client X arc (Ep. 37&38), she finally is on the cusp of her Heel–Face Turn when something happens thanks to Ryubee and she becomes completely evil. Then by the end she gives her life to allow Philip to come back to life.
  • Idol Singer: Gets her own Defictionalized single release with "Naturally".
  • Magikarp Power: Clay Doll seems to be the weakest of the Gaia Memories used by Museum, primarily useful for its regenerative ability and suffering the humiliation of being unable to hit even an untransformed Kirihiko. Claydoll Xtreme, meanwhile, is so monstrously powerful that not once do the Riders ever stand a chance against her.
  • One-Winged Angel/Evil Counterpart: The Gaia Progressor she gains from her father grants her Claydoll Xtreme form, which is much more powerful and grants Wakana access to the Gaia Library.
  • People Puppets: Was the victim of one such attempt, by way of the Puppeteer Dopant - her Dopant form is named Claydoll, after all.
  • Rich Bitch: Until she mellowed out in "The Radio Q", that is.
  • Talking the Monster to Death: By the end of the show, this is the only option for dealing with Wakana, who's so powerful that beating her in combat is impossible. The one who does the talking isn't Shotaro or Philip, though, but Shroud.
  • Verbal Tic: *tch* , complete with close-up.
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    Kirihiko Sudo 

Kirihiko Sonozaki/Nasca Dopant | Actor: Yuki Kimisawa

Originally named Kirihiko Sudo, he was a promising Gaia Memory salesman who became engaged to Saeko. In his childhood, he designed the famous mascot Futo-kun, based on a windmill. Marrying into her family, he quickly becomes a Museum commander, assisting Saeko in administering the family business. As Nasca he has Super Speed, flight, and fencing skills. He's the first Museum member to perish, as his Nasca Memory begins to kill him when he unlocks too much of its power. He makes a final appeal to Saeko to make a Heel–Face Turn with him, and she finishes him off.

  • Alas, Poor Villain: The Farewell N arc generates plenty of sympathy for Kirihiko, and ends with his perishing.
  • Bring My Red Jacket: The cravat that Kirihiko wears has a red mark on it right over his chest. It's practically a bullseye for the attack that eventually kills him.
  • Deadly Upgrade: Upon taking the Nasca Memory to Level 2, Kirihiko begins seizing up whenever he tries to use it, and then even when he's not using the Memory, which Ryubee reveals to be the result of his excessive training and poor compatibility with the Nasca Memory leading to one of these. Worse yet, Ryubee and Saeko knew this would happen to him and gave him the Memory deliberately knowing it would kill him. Judging by the pain he's in, what Saeko does to him might qualify as a Mercy Kill by comparison.
  • The Dragon: During his tenure, Kirihiko is the most active Museum member by far when it comes to engaging Double in direct combat.
  • Embodiment of Vice: Pride, exhibited in his Noble Demon tendencies and his cocksure attitude, even dodging Clay Doll's attacks without transforming at his wedding just to show off the fact that he can.
  • Even Evil Has Standards: Kirihiko draws the line at giving a Deadly Upgrade to kids to see what will happen.
  • Fanservice: He's stark naked (save for his Memory Driver) when he's given the Nasca memory and his ass is in full view of the camera.
  • The Maiden Name Debate: Inverted - he takes Saeko's family name after their marriage because she is his social superior.
  • Not So Different: From Shotaro, as they both love Futo.
  • The Rival: To Double.
  • Scarf Of Asskicking: Has two, similar to Kamen Rider V3.
  • Super Speed: Kirihiko's training with the Nasca Memory eventually unlocks this power for him. Unfortunately for him, that training pushed him past the limit of how much of the Memory's power he could handle.
  • Well-Intentioned Extremist: Loves Futo as much as Shotaro does, yet is willing to use Gaia Memories to destroy those who wish it harm.
  • You Have Failed Me: Saeko showed increasing displeasure over his failure to defeat Double in the form of both verbal and physical abuse. She forgives him for it, but it turns out he'd failed her from the very beginning, and she gave him the Nasca Memory knowing it would kill him.
    Shinkuro Isaka 

Shinkuro Isaka/Weather Dopant | Actor: Tomoyuki Dan

Shinkuro Isaka is a benefactor of the Sonozaki family and high-ranking member of the Museum. He is the wielder of the Weather Memory, responsible for the murders of Ryu's family. Isaka appears on the scene after Kirihiko's death and becomes a love interest to Saeko, initially working as the head doctor of a hospital until Ryu exposes him as a Dopant and he is forced to go underground at the Sonozaki mansion. He is killed when, after Accel destroys his Weather Memory in Trial Mode, Isaka is consumed by the multiple Memory ports all over his body.

  • Arch-Enemy: To Ryu.
  • Arc Villain: From The I Doesn't Stop to Beyond the R.
  • Big Eater: Having multiple memory drives supercharges his metabolism, requiring him to have a high calorie intake.
  • Character Tics: Licking his lips.
  • Eat the Dog: At the end of episode 28, Isaka thinks about how hungry he is and begins staring at the cat. Fortunately, Mick comes through it unscathed.
  • Embodiment of Vice: Gluttony, both in his Big Eater tendencies and his endless hunger for more powers than even his Weather Memory grants him.
  • Evil Cannot Comprehend Good: After Accel finally destroys his Weather Memory, he's left unable to fathom how Ryu managed to defeat him without his hatred, not realizing it was his determination to save Isaka's captive that gave him the strength to master the Trial Memory and win.
  • Fetish: Is interested in Saeko's body only when she is in her Dopant form.
  • Informed Ability: Supposedly has gained the power of numerous Gaia Memories, yet he always relies only on his Elemental Powers. That said, he's been shown to resist multiple Memory Breaks, albeit not unscathed, and even compared to a normal Dopant he seems unusually powerful.
  • Laser-Guided Karma: When the Weather Memory finally breaks, Isaka's Living Connectors kill him from the inside out. Guess that's what he gets for dipping into Gaia Memory research a little too much...
  • Power Born of Madness: The reason Isaka doesn't believe in the use of Drivers. Incidentally, he's the third strongest Dopant in the series and so completely insane that his own Memory couldn't make him worse.
  • Serial Killer: Not only does he murder people to take their Gaia Memories, when he got the Weather Memory, he went on a series of murder sprees simply to test out his various elemental powers. Ryu's family are among his victims.
  • The Starscream: Has offered to help Saeko overthrow her father and made good on his offer in "Beyond R". He failed.
  • Superpower Lottery: As the Weather Dopant, Isaka has nearly every Elemental Power in the book. It's not enough for him, though, and he continues to seek means of acquiring even more superpowers by devouring other Memories.
  • You Killed My Father: Killed Ryu's entire family in cold blood. It creates one of Double's most powerful allies.
    Mick Sonozaki 

Mick Sonozaki/Smilodon Dopant | Voice Actor: Yasuhiro Takato

Ryubee's (originally Raito's) pet British Shorthair cat. Also can become a Dopant through the use of the Smilodon Memory. The Smilodon Dopant can move into high speeds and can discharge electric currents.

  • Defeat Means Friendship: You can even hear him purring. Justified, considering he was Raito's pet.
  • Embodiment of Vice: Sloth, as befitting a lazy cat. Mick only acts on Ryubee's orders, and doesn't seem to particularly mind changing owners as long as he's fed and petted.
  • Mega Neko: As the Smilodon Dopant.
  • Weaksauce Weakness: Waving objects in a certain way will make him stop a bit and expect food. Quite Pavlovian.note 

    Dopants 

A Dopant is created when a Gaia Memory is inserted into a human body, transforming the user and granting them supernatural powers. Each Gaia Memory contains the culminated knowledge of a single topic extracted from the True Gaia Memory; thus, Gaia Memories can be based on anything from the history of Earth, from natural phenomena to abstract concepts.

In normal cases, a human requires surgery before they can use a Gaia Memory. A Living Connector is imprinted upon the skin of the user, through which the Gaia Memory can be directly inserted into the body. While this maximises the power of the created Dopant, it carries a significant risk that the Gaia Memory will consume the sanity of the user and create a strong addiction to its power.

Gaia Drivers are external mounts that can be used to insert a Gaia Memory without surgery. While this limits the power of the Memory, it removes the negative side-effects. High-ranking members of the Museum equip first-generation Gaia Drivers to transform into Dopants, compensating for the power loss by using extremely powerful "golden" Gaia Memories.

Tropes embodied by the Dopants include:

  • Attack Reflector: Jewel can do it with energy attacks.
  • Badass Normal: Normally Dopants will go mad within a few days to weeks of using their Memory for the first time due to its addictive nature. The Beast Dopant managed to use his Memory for ten years without suffering any mental issues of note, not even Isaka's heightened megalomania. He's also one of the most powerful Dopants in the series in direct combat, with basically the same powers as Wolverine.
  • Battle Couple:
    • Beast and Zone are a husband-and-wife team who robbed an armored car ten years prior to the series.
    • Magma and T-Rex were a couple who became Dopants together in order to take revenge on their former employer, but then T-Rex kills Magma when he becomes useless to her because he has been completely taken over by his Memory.
  • Bitch in Sheep's Clothing: Several Dopants look kind and innocent until the truth comes out about their identities, which usually leads them to drop the act.
  • Card-Carrying Villain: Quite a few Dopant abusers come complete with titles like Mr Question and the Radio Clown, sometimes with a one-shot Catchphrase or Bond One-Liner.
  • Compelling Voice: Liar, who as the name implies, can literally make anyone believe anything, so long as it's not the absolute truth.
  • Disproportionate Retribution: Quite a few Dopants use their powers for really petty reasons.
  • Does This Remind You of Anything?: Gaia Memory use is paralleled with drug use.
  • Elemental Powers: Magma, IceAge, and Energy.
  • Expy:
    • Old is pointed out by the characters to be one to Terror, given their "ancient" design and their use of a sort of sludge to attack. Old ends up acting as a trial run of sorts of how the characters intend to go about fighting Terror.
    • IceAge and Triceratops are the first two Dopants Accel faces, compared to Magma and T-Rex, the first two onscreen Dopants Double takes on.
    • The Masquerade Dopants could be seen as Expies of the classic Shocker Soldiers, given their skeletal design and status as easily-defeated Mooks.
  • Fantastic Drug: Gaia Memories are highly addictive, grant a power high that often brings out the worst in the user's personality, and can wreak havoc on their mind and body with extended use.
  • Genetic Engineering Is the New Nuke: Gene, for his powers to work, needs biological material but can create anything from said material. For example, he created a plush cow on Shotaro's right hand with two leaves during their first fight.
  • The Gunslinger: Arms.
  • An Ice Person: IceAge.
  • Invisibility: Invisible, though notably, Lily Shirogane didn't actually become a monster of any sort; Dr Isaka modified the Invisible Memory to allow her to use its power without such a change.
  • It's Personal: Many of the Dopants. Notable are Puppeteer, who attacks the literary critics that panned the book he wrote in his daughter's memory; Magma and T-Rex, who wanted revenge on their old employer for firing them; and Yesterday, who turns out to be Kirihiko's sister and wants to get back at Saeko for her brother's death.
  • Knight Templar: At their least twisted, Dopants end up as these. Triceratops and Commander are standout examples.
  • Legacy Character: The final episode of the series establishes that multiples of the same Memories do exist; in this case, Anomalocaris and Cockroach. Another specific example would be Roidmude 077 becoming the next Beast Dopant.
  • Love Makes You Crazy: Oh so much. T-Rex killed her lover Magma because he went crazy, Triceratops wishes to avenge her lover, Violence is Wakana's Stalker with a Crush, Nightmare is jealous to the point of putting his supposed rivals to sleep, Jewel set his unrequited crush up as the culprit though he was a monster to begin with. Commander is driven by a desire to avenge his dead wife, but unlike Triceratops, who on her own only wanted to kill those who caused his death, Commander decides to kill all criminals, regardless of crime.
  • Made of Diamond: Jewel, quite literally.
  • Magma Man: Magma, who else?
  • Money Fetish: The Money Dopant.
  • Monogender Monsters: Averted; people become Dopants regardless of gender. An even funnier detail to this aversion is that some of the more 'manly' Gaia Memories, like T-rex and Triceratops do in fact have female users.
  • Mook Maker: The Commander Dopant can create Faceless Goons called Masked Soldiers out of thin air.
  • Mythology Gag:
    • Hopper is based on a grasshopper and fights with powerful kicks. Sound familiar?
    • Cockroach having Super Speed as its main power.
  • One-Winged Angel: Certain Memories (particularly the ones based on animals) can make their user a larger Dopant, done in Conspicuous CG.
    • Quetzalcoatlus is this right of the bat, with no intermediate humanoid form ever seen (though this might be partly because the "user" was a parrot).
    • Bird does this as a result of its Gaia Memory evolving.
    • Commander upgrades his Gaia Memory to increase his power, changing form in the process.
  • Overnight Age-Up: Old's specialty, at a price of about 10,000 yen for every year he ages the victim up. (Payment up front.)
  • People Puppets: Puppeteer, though he mostly sticks with his dead daughter's Creepy Doll.
  • Psycho for Hire: Cockroach and Old.
  • Right Hand of Doom: Violence, whose left hand is an Epic Flail.
  • Roaring Rampage of Revenge: Several are motivated solely by revenge.
  • Shock and Awe: Energy in the finale.
  • Small Name, Big Ego: The Sweets Dopant. She considered her restaurant to be "the best in Futo" despite the fact that it folded and closed in less than a year. Unfortunately, this lead to her snapping and using the Sweets Gaiamemory to kidnap and enslave Patissiers to be her personal source of sweets.
  • Stock Dinosaurs: T-Rex and Triceratops.
  • Stringy-Haired Ghost Girl: Virus can come very close, even though she's still alive (though in a coma).
  • Super Speed: Cockroach, Smilodon, and Donburi.
  • Sweet Tooth: Sweets, who sneaks desserts while working as a maid for the Sonozaki family.
  • Teleport Spam: Zone.
  • Two Guys and a Girl: Jewel and his friends. Him finding out that his two friends loved each other didn't go... well with him, which was very similar to Isamu Bitou and the Beast and Zone Dopants (he had no problems with them getting together, but still got screwed over for it).
  • Voluntary Shapeshifting: Other than anyone with a Memory, Dummy can take on the appearance of anyone he wants, usually the dead to take advantage of the dead person's loved ones.
  • Well-Intentioned Extremist:
    • Triceratops.
    • It seems to be this way with the original Cockroach, as he believed he was being a superhero.
  • With Great Power Comes Great Insanity:
    • Memories used without a Driver madden their user, and Drivers can be modified to mimic the effect of direct insertion.
    • Using a Memory without the bio-port will cause grievous bodily harm and even death with extended use, as seen with the underage high school students who shared the Bird Memory.
  • Yandere: Several of the Dopants are this trope, including the T-Rex Dopant, the Violence Dopant, and the Spider Dopant.

Foundation X

    General Tropes 
Foundation X is a shadowy organization funding experiments on human evolution; this does not just include Gaia Memories but also a certain class of medals.

     Jun Kazu 

Jun Kazu/Utopia Dopant/Kamen Rider Eternal Red Flare | Actor: Gong Teyu

A representative of Foundation X, which researches Gaia Memories for the Museum. He rescues Saeko when she is attacked by the Smilodon Dopant and her Taboo Memory is destroyed, and reveals that he wants to help her overthrow Ryubee.

  • The Blank: This is what he does to everyone associated with Philip in order to jumpstart the Gaia Impact.
  • Character Tics: Frequently becomes startled and drops things. Becomes a Brick Joke when you see how he inserts his Gaia Memory.
  • Dead All Along: Killed by Katsumi/Kamen Rider Eternal in Eternal's V-Cinema, and was then taken back to the headquarters by subordinates, turning him into a Necro-Over.
  • Energy Absorption: He literally sucked Accel's Super Mode right out of him, then used the energy to set him on fire.
  • Even Evil Has Standards: Before his own atrocities occur in the series, he considered Dr. Prospect's "Heaven's Fall" brutal even by his standards during that time.
  • Final Boss: He's the last major threat faced by Shotaro and Philip in the series.
  • Iconic Item: His briefcase, which contains the T2 Gaia Memories.
  • Light Is Not Good: A well groomed, impeccably dressed Man in White who possesses the "Utopia" memory, which transforms him into an elegant gold Übermensch. On the other hand, utterly ruthless, calculating, and barely capable of expressing any emotion. Even before he died.
  • Logical Weakness: Utopia's ability is to drain hope from its opponents and turn it into power, and is shown to be absolutely devastating when used against other living beings. However, this means that the ability is worse than useless against targets that have no concept of hope, such as mechanical automatons and inanimate objects. Shotaro manages to figure this out in time for the final battle, and deploys the memory gadget robots against Utopia to incredible effect, and even blocks the hope-draining ability with his hat.
    • This is also a critical factor in Eternal's V Cienma, where he can't draw power from Katsumi Daido/Kamen Rider Eternal (since Katsumi is Dead All Along, Kazu obviously cannot draw "hope" from a dead person), allowing Katsumi to completely own him when he became Eternal (and Katsumi actually had a pretty close fight against Kazu even before his henshin).
  • Mind over Matter: The most commonly used of Utopia's powers. Turns out this is actually his own psychic power as a Quark.
  • Ninja Pirate Zombie Robot: He's a Dopant, a Necro-Over, a Quark, and a former Kamen Rider as well.
  • No Body Left Behind: After he's defeated, his body disintegrates.
  • Not So Stoic: Calm and cold until he finally breaks down out of frustration at Saeko for not returning his feeling or appreciating his effort to make her "Queen" of The Museum.
  • Power Floats: A variation: Kazu usually makes everything else float when he's about to use the Utopia Memory, or just showing off his psychic powers.
  • Reality Warper: The Utopia Memory's power is granting the wishes of its user.
  • The Starscream: Appears to have offered to help both Sonozaki girls overthrow their father.
  • Subordinate Excuse: Claims to have feelings for Saeko and thus wants to help her defeat her father. Saeko doesn't seem so keen...
  • Too Spicy for Yog-Sothoth: How he is defeated. He uses his hope-draining ability on CycloneJokerXtreme, but ends up absorbing much more energy than he can handle.
    Neon Ulsland 

Neon Ulsland | Actor: Maria Theresa Gow

Jun Kazu's superior, a seemingly foreign woman in charge of the Foundation X front Charming Raven.

  • Greater-Scope Villain: She seems to be a high-ranking member, if not the leader, of Foundation X and is the one who terminates Foundation X's research into Gaia Memories after Jun Kazu is defeated.
  • Iconic Item: Her stopwatch.
  • Surprisingly Good English: Justified, as Maria Theresa Gow's father is Scottish and her mother was a Filipina. Of course, she still can't pronounce Museum.

Others

     The Futo Irregulars 

Played by Nasubi (Watcherman), Zennosuke Fukkin (Santa-chan), Tomomi Itano (Queen), Tomomi Kasai (Elizabeth)

Shotaro's informants, nicknamed after the Baker Street Irregulars from the Sherlock Holmes series. These consist of Watcherman, an anonymous blogger; Santa-chan, a man who dresses as Santa Claus and wanders around Futo handing out presents; and Queen and Elizabeth, a pair of "street" teenage girls.

  • Big Eater: Watcherman and Santa-chan go though several bowls of ramen (eight each, to be exact) in the time it takes for Akiko to make a phone call.
  • Butt-Monkey: Watcherman finds himself the target of most of the show's comedic violence.
  • Catchphrase: Santa-chan's "Merry Christmas!"
  • Ephebophile: Played for laughs with Watcherman.
  • Funny Afro: Watcherman.
  • Hair Decorations: Elizabeth and her rose hairclips.
  • Informed Attribute: Queen and Elizabeth don't spend a lot of time in high school, do they?
  • Joshikousei: Queen and Elizabeth.
  • Kawaiiko: Elizabeth.
  • Otaku: Watcherman, though it's not the first time the actor has played one.
  • Ship Tease: Begins Night and the ending of "The B Carried on the Wind" implied that Elizabeth has a crush on Philip. "If Philip-kun's not going to eat his candy apple, then let ♥ me ♥ do ♥ it! ♥"
  • Some Day This Will Come In Handy: Santa-chan gives Shotaro a bunch of miscellaneous crap in episode 4, including a deck of cards. Shotaro later plays a winner-take-all game of Old Maid with the Money Dopant, and won in the end with those same cards. The cards reappear briefly in ep. 12.
  • Those Two Guys: Watcherman and Santa-chan count, with Queen and Elizabeth as Those Two Girls.

    Shroud 

Shroud/Fumine Sonozaki | Actor: Naoko Kouda

A mysterious woman dressed in a black trenchcoat and oversized fedora, her face covered with sunglasses and bandages. Her main role in the series is as a supplier of gear, particularly to Ryu, Philip, and Isaka. She is later revealed to be Ryubee's wife and is exacting revenge for what happened to Raito/Philip.

  • Bandaged Face: Caused by her husband, no less.
  • The Chessmaster: Her opponent is Ryubee Sonozaki. Fitting the show's hardboiled theme, a billiards metaphor is used instead of chess.
  • Childhood Friends: Movie Wars reveals that she's childhood friends with Sokichi, who helped her hide from Ryubee. In exchange, she made the Skull Memory for him.
  • Embodiment of Vice: Wrath, the only thing Shroud has left.
  • Evil Mentor: Shroud tries to be this to Terui, encouraging him to embrace The Power of Hate to become her weapon in her revenge against Ryubee. Eventually Terui rejects her mentorship and finds a better way.
  • Evil vs. Evil: She's not much better than Ryubee, if at all, being directly responsible for the deaths of Accel's family.
  • Gone Horribly Wrong: Giving Isaka the Weather Memory, although her warped sense of perspective means she's initially upset about it for all the wrong reasons.
  • The Gunslinger: Her Shroud Magnum, a Palette Swap of the Skull Magnum. Comes with the Bomb Memory for a rather deadly Maximum Drive.
  • Heel–Face Turn: It takes until almost the very end, but Shroud is able to make peace with the last of the Sonozaki family. In so doing, she stops the unbeatable Wakana, saves Philip's life, and earns her happiness within the Earth's memory.
  • It Was a Gift: All of Ryu's equipment, Double's Frog Pod and Denden Sensor, the vehicles and gadgets that Double inherited from Skull, Skull's own Memory, and Isaka's Weather Memory were all handed to them by Shroud to further her plans.
  • Living on Borrowed Time: Shroud's sheer fury seems to have been the only thing keeping her alive after the injuries that led her to bandage her face. When she finally lets go of her hatred, she perishes soon after.
  • Luke, I Am Your Father: She's Ryubee's wife and the mother of Saeko, Wakana, and Raito (Philip), whose face was burned by Terror's ooze after she refused to have Raito used as a Museum experiment.
  • Nice Hat: As do most of the cast.
  • Roaring Rampage of Revenge: Her motivation is getting revenge against Ryubee for taking Raito from her.
  • Teleportation: Seems to have the ability to teleport objects in rings of fire as well as reappear and disappear. While an explanation for how she does this isn't given in the series proper, Word of God implies she's a Quark.
  • Well-Intentioned Extremist: Few people have done so much evil in the name of good.
  • Xanatos Speed Chess: The events of the entire series effectively amount to a game of Xanatos Speed Chess between her and Ryubee.
  • You Have Failed Me: You no longer hate your opponent as much as you used to? Now you're useless to her, and she'll send you off to die.

Characters appearing in Kamen Rider Double: Begins Night

     Asami Mutsuki 

Asami Mutsuki | Actress: Asuka Shibuya

A famous pop singer. She is being haunted by the spirit of her dead sister Erika, and comes to the Narumi Detective Agency for help. Later calls off the case after being lured into a trap by cult leader Father Roberto Shijima.
    Erika Mutsuki 

Erika Mutsuki | Actress: Miyu Sawai

Asami's sister, who died in a boating accident a year ago.

    Father Roberto Shijima 

Father Roberto Shijima/Death Dopant/Dummy Dopant | Actor: Toru Tezuka

A cult leader who takes care of the local cemetery. He is causing the mysterious resurrections throughout Futo, including those of Erika and Sokichi as the Death Dopant... who he is imitating as the Dummy Dopant.

Characters appearing in Kamen Rider Double Forever: A to Z/The Gaia Memories of Fate

    NEVER 

NEVER

  • Came Back Wrong: Katsumi was Maria's good son, Reika was just an escaping prisoner, Kyosui was a triad member who got betrayed (and without his Camp Gay trait before death), Gozo was a farmer protesting against land development, and Ken was a married SAT member. Subverted by a little that they still retain their kind side even after becoming NEVER , but subsequent events turned them insane (though Reika was still retaining her sanity).
  • Dead All Along: NEVER was a project by the Museum and Foundation X reviving people to use as Super Soldiers.
  • Evil Counterpart: To Double's own Gaia Memories. Although Cyclone isn't evil.
  • Fallen Hero: The group began acting as mercenaries, still holding onto their ideals. One of the effects from the serum that kept them active was the gradual vanishing of their emotions: by the time of A to Z, most -if not all- of them had already fallen to this, even if most of their personality traits were retained. That and their failure to save the Quark project subjects drove them insane.
  • Phlebotinum Rebel: Villainous version. Though originally this wasn't the case.
  • Super Soldier: Were originally intended to be used as this due to their invulnerability.
  • We Have Reserves: when a defeated Reika returns to Eternal, he dismisses her and tells her that he can just make more of them.
    Katsumi Daido/Kamen Rider Eternal 

Katsumi Daido/Kamen Rider Eternal Blue Flare | Actor: Mitsuru Matsuoka

Katsumi Daido is the leader of the terrorist organization NEVER, distributing the T2 Gaia Memories which resemble the Kamen Rider's Memories. With the Eternal Memory and a Lost Driver, he transforms into Kamen Rider Eternal.

Tropes that apply to him in general

  • Ax-Crazy: Oh boy, is he.
  • Big Bad: Of The Movie.
  • Came Back Wrong: Subverted. According to his mother, before he died, he was actually a good person and loving son, thus why she brought him back to life to begin with. However, the backstory in Kamen Rider W Returns: Kamen Rider Eternal reveals that it wasn't the resurrection that corrupted him; he turned out okay initially. Instead, it was after his encounter with Dr. Prospect that he began to be more unhinged.
  • Card-Carrying Villain: Not afraid of proclaiming himself to be evil.
  • Catchphrase: "Now, Enjoy Your Hell."note 
  • Driven to Madness: Dr. Prospect's coldblooded murder of the Quark Project subjects drove Katsumi insane.
  • Early-Bird Cameo: A rather surprising one: SOPHIA was a guest at Anime Expo 2010 in Los Angeles, and during their last song, Eternal came on stage.
  • Fallen Hero: His failures in W Returns: Kamen Rider Eternal, and the monstrosities he witnessed, were what drove Katsumi to fall.
  • Knife Nut: He carries around a combat knife.
  • Laughing Mad: Happens after he was driven insane by the deaths of the Quark Project subjects.
  • Noble Demon: Sure, Katsumi is a ruthless fighter and killer, but he saved his to-be comrades from death by turning them into Necro-Overs, and also Mina and her Quark's comrades from despair and death, urging them to fight against Foundation X for survival. Even Shotaro and Philip mourned for him after hearing the whole story, saying that he could have become another Kamen Rider protecting Futo had he not experienced those events.
    Katsumi: If the past is going to disappear, then at least let me have a tomorrow. That's why we're still struggling! Now, a dead person like me is still fighting for my tomorrow, how can you explain that!?
  • Roaring Rampage of Revenge: His reason of returning to Futo in The Movie, against both Museum and Foundation X.

Tropes exclusive to him as Kamen Rider Eternal

  • All Your Powers Combined: Eternal can channel a 26-memory Maximum Drive with all of the T2 memories.
  • Badass Cape: The Eternal Robe. From the setting, it can block electric shock, fire, blizzard and physical attacks, making him almost imprevious to most type of damage.
  • Finishing Move: Five of them.
    • Eternal 1: Eternal Requiemnote 
    • Eternal 2: Bloody Hell Bladenote 
    • Unicorn: An unnamed Maximum Drive where Eternal executes a Rider Punch through drill shaped energy.
    • Zone: Another unnamed Maximum Drive that brings all T2 Gaia Memories (within a certain radius) to Eternal, placing each one in a Memory Slot.
    • T2 Gaia Memories: Never Ending Hellnote 
  • Knife Nut: Eternal Edge.
  • Mythology Gag: His design somewhat resembles that of Kiriya's Oni form from Kamen Rider Hibiki, while following the trend of white movie-exclusive Riders like Psyga, Touki & Den-O Wing Form.
  • Palette Swap: Eternal Red Flare from W Returns: Eternal, which is revealed to be the result of using the experimental T1 Eternal Memory. Its resonance with Daido causes it to evolve into Blue Flare before burning out entirely.
    Reika Hanehara 

Reika Hanehara | Heat Dopant | Actor: Minase Yashiro

Reika is a woman who uses the T2 Heat Memory to control fire. She also has her own motorcycle. Defeated by Kamen Rider Joker's Rider Kick.

  • Berserk Button: She doesn't like it when Shotaro calls her cold.
  • Blood from the Mouth: In her death scene in the Eternal V-Cinema.
  • Breakout Character: Of the NEVER characters, she gets the most attention and screentime in the Eternal V-Cinema of anybody except Katsumi himself. Having the most nuanced personality of the bunch in Forever A to Z probably helped, as did Koichi Sakamoto's tastes in women.
  • Mad Love: Implied towards Katsumi. The movie OST actually has a track named "Twisted Love", which plays when Reika's body disintegrates after Katsumi rejects her as just a tool.
  • Nice Job Fixing It, Villain!: Telling Shotaro that Daido is holding Philip captive is a subtle case of this.
  • Masculine Girl, Feminine Boy: Masculine Girl to Kyosui's Feminine Boy.
    Kyosui Izumi 

Kyosui Izumi | Luna Dopant | Actor: Genki Sudo

Kyosui is a man who uses the T2 Luna Memory in order to cast illusions on his body, allowing him to bend. While he manages to best Kamen Riders Double, Accel, and Joker (on separate occasions), he is defeated by Kamen Rider OOO's OOO Bash.

  • Berserk Button: According to him, being called a creepy old guy is a huge insult to a lady.
  • Bodyguard Crush: Fell in love with Katsumi before his first death.
  • Camp Gay: And very open about it, to boot. He even calls himself a "lady".
  • The Cast Show Off: Genki Sudo is both a mixed martial artist and a dancer, so Kyosui spends a lot of time sort of dancing in place just to show off how flexible he is.
  • The Dragon: To Eternal/Katsumi Daido.
  • Manly Gay: Considering the actor normally does MMA...
  • Masculine Girl, Feminine Boy: Feminine Boy to Reika's Masculine Girl.
  • Mook Maker: He is able to spawn T2 Masquerade Dopants.
  • Rock Beats Laser: In W Returns: Eternal he can avoid psychic attacks by shimmying.
    Gozo Domoto 

Gozo Domoto | Metal Dopant | Actor: Koji Nakamura

Gozo is a man who uses the T2 Metal Memory to turn into the Metal Dopant, wielding a rod. Defeated by Kamen Rider Joker's Rider Punch.

  • Shirtless Scene: The Metal Memory goes into his back. W Returns: Eternal plays this one straight.
    Ken Ashihara 

Ken Ashihara | Trigger Dopant | Actor: Masayuki Deai

Ken is a man who uses the T2 Trigger Memory to turn into the Trigger Dopant, with a large rifle attached to his arm. Defeated by Kamen Rider Accel Trial.

    Maria S. Cranberry 

Maria S. Cranberry/Maria Daido/Cyclone Dopant | Actor: Aya Sugimoto

Maria S. Cranberry is an international crime investigator on the trail of NEVER, aiding Shotaro as he combats the organization.

  • The Atoner: She helps the heroes in order to atone for her role in making her son a guinea pig for the NEVER experiment.

Characters appearing in Kamen Rider Skull: Message for Double

     Seiichiro Matsui 

Seiichiro Matsui/Spider Dopant | Actor: Taro Yamamoto

Called Matsu, he is Narumi Soukichi's friend and partner from 1999. He helps Soukichi on his cases by researching in libraries, which causes Akiko to compare him to Philip. However, his jealousy of Soukichi leads him to become the Spider Dopant, eventually kidnapping Melissa with the intent of marrying her. Soukichi as Skull stops him, however, and defeats him with a Rider Kick, at the cost of Matsu's life.

  • Expy: To Philip, minus the magical library.
  • Mythology Gag: As the Spider Dopant, he is a reference to the Spider-Man from the original series. He's even called Kumo Otoko (Spider-Man).
  • No Ontological Inertia: Averted: even after his Memory broke and he died, the spider bombs he planted remained active.
    Melissa 

Melissa | Actor: Hikaru Yamamoto

A famous singer in Futo in the year 1999, and being stalked by the infamous Spider-Man.

  • Shoe Slap: Does this to the Spider-Man/Dopant. With a high-heel shoe.
  • Unholy Matrimony: Spider Dopant attempts to do this with her.
    Eren Komori 

Eren Komori/Bat Dopant | Actor: Reon Kadena

A Museum agent serving as a Gaia Memory dealer in 1999. Fights Soukichi/Skull as the Bat Dopant, and is defeated after Skull uses the Skull Punisher on a fuel truck she was controlling. She begs for the Rider to rescue her, but he ignores her as the truck bursts into flames and explodes.

  • Mythology Gag: Another reference to the original series, where Kamen Rider 1 fought a Bat after the Spider.
  • Punny Name: While 'Komori' is written with different kanji, it's a homophone for the Japanese word meaning 'bat'.
    Kamen Rider Core 

Kamen Rider Core

A monster created from the fusion of the Memory Memory and the black Core Medals.

Characters appearing in Kamen Rider W Returns: Kamen Rider Accel

     Aoi Katsuragi 

Aoi Katsuragi | Actor: Yukari Taki

A member of a pickpocketing ring and a thief's daughter; she saw her father killed by a certain cop later revealed to be the Commander Dopant. Thus she treats police officers with apprehension until meeting Ryu Terui/Kamen Rider Accel. Her involvement with Ryu complicates his marriage with Akiko, yet in the end their relationship recovers and Aoi begins to reform.

  • Just Like Robin Hood: Subverted in that she only really turns good after vowing to leave her life of crime.
    Hiroshi Sagami 

Hiroshi Sagami/Commander Dopant | Actor: Minoru Tanaka

An officer within the Futo police who saw his wife killed in front of him. Thus he became the Commander Dopant, vowing to eradicate crime in the city regardless of life or cost. He eventually acquires the Gaia Memory Enhancing Adapter, increasing his power, and later abducting Akiko to attempt to convince Ryu to follow his path. Ryu decides not to, however, and defeats Sagami as Accel Booster.

Characters appearing in Kamen Rider W Returns: Kamen Rider Eternal

     Mina 

Mina

A mysterious psychic who confronts Shotaro and Philip, and tells them the story of Katsumi Daido, Kamen Rider Eternal.

  • Mind over Matter: While Mina can use all of the various types of Quark powers, telekinesis is her general favorite.
  • Superpower Lottery: Of the various Quarks, she's noted to be far and away both the most powerful and the most versatile, manifesting all of the various abilities the psychic soldiers can achieve instead of just one. She's so powerful, in fact, that even the Eyes Dopant's brand doesn't kill her.
    Doctor Prospect 

Doctor Prospect/Eyes Dopant

A doctor sponsored by Foundation X and leader of the Quark project, designed to augment humans with Psychic Powers.

  • Big Bad: Of W Returns: Eternal.
  • The Dreaded: The Quarks, people with amazing Psychic Powers, are absolutely terrified of him. And with good reason!
  • Morally Ambiguous Doctorate: He's a very intelligent man, but he's also a complete maniac with no regard for human life.
  • Sinister Surveillance: One of his powers as the Eyes Dopant is to implant Quarks with an "eye" that allows him to watch their every move. Said eyes also can be used to kill their bearers in case of escape.
  • Super Senses: Of the sight variety.
  • Weaksauce Weakness: His creepy floating eyes can also be used to predict his opponents moves in a fight, but Katsumi gets around this by using his Eternal cape to hide his attacks from his sight. Even before that, Kamen Rider Eternal did considerably better against him, likely due to him previously using muscle movements and facial expressions to predict his movements, which he couldn't see inside the suit.
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