Dopant (Kamen Rider)
Encyclopedia
The are the fictional antagonists in the Kamen Rider Series
Kamen Rider Series
The is a metaseries of manga and tokusatsu television programs and films created by manga artist Shotaro Ishinomori. The various Kamen Rider media generally feature a motorcycle-riding superhero with an insect motif who fights supervillains often referred to as...

 Kamen Rider W. Dopants are normal humans who use Gaia Memories. The Gaia Memories are aspects of the true , the knowledge of everything on the Earth. These were originally accessed due to Philip's link to the Gaia Memory by means of the . But after he was taken from them, the Sonozaki Family uses a strange temple underneath their mansion to access the Gaia Memory. They then sell these to the highest bidder or to common criminals, both types used as guinea pigs to study the Gaia Memories as part of the Gaia Impact project. The name comes from the English words "dopant
Dopant
A dopant, also called a doping agent, is a trace impurity element that is inserted into a substance in order to alter the electrical properties or the optical properties of the substance. In the case of crystalline substances, the atoms of the dopant very commonly take the place of elements that...

" and "doping".

Gaia Memories

A is a mysterious device resembling a USB flash drive
USB flash drive
A flash drive is a data storage device that consists of flash memory with an integrated Universal Serial Bus interface. flash drives are typically removable and rewritable, and physically much smaller than a floppy disk. Most weigh less than 30 g...

 that contains all of the Earth's knowledge of what it represents. This enables its user to become a Dopant, or in some special cases a Kamen Rider. Every Gaia Memory is adorned with the first letter of its name, stylized to reflect the powers it imbues on its user. For example, the Injury
Injury
-By cause:*Traumatic injury, a body wound or shock produced by sudden physical injury, as from violence or accident*Other injuries from external physical causes, such as radiation injury, burn injury or frostbite*Injury from infection...

 Memory (acquired by Shotaro and Philip before the series begins) resembles a broken bone
Bone fracture
A bone fracture is a medical condition in which there is a break in the continuity of the bone...

 in the shape of the letter I. Each Memory also features a button which when clicked causes the Memory to loudly declare its name; while this is traditionally done immediately before inserting the Memory by Riders and Dopants alike, it is unclear if it is actually mandatory to activate the Memory's powers. In order to transform into a Dopant, the Gaia Memory is first inserted into a device called the L.C.O.G , also called a , which then produces a USB port
Universal Serial Bus
USB is an industry standard developed in the mid-1990s that defines the cables, connectors and protocols used in a bus for connection, communication and power supply between computers and electronic devices....

-like tattoo on the user's skin called a . Whenever the Gaia Memory is pressed onto the Living Connector, it enters the user's body and transforms the user into a Dopant. Use of a Gaia Memory without a Living Connector is possible, but the side effects of doing so are nearly fatal.

This direct insertion will eventually drive its user insane from its addictive influence, which is why special belts called have been developed for use by high ranking members of the Museum to filter out these and other side effects. This weakens the Dopant visibly; high-ranking Museum members use some of the strongest Gaia Memories to more than compensate for this weakening. Kamen Riders utilize Gaia Memories that have been refined such that they can only be used in specialized Memory Driver belts. This refinement makes them resemble USB drives, rather than the ribcage design on Dopant Gaia Memories, but further weakens the power of the Memories, only allowing access to the Memory's full power during a Maximum Drive. However, despite their Memories not being as strong as unrefined ones, they are able to utilize multiple Gaia Memories at once, instead of only one like most Dopants. In some cases, a Gaia Memory may be compatible with its user which, in that case, direct insertion will not corrupt the user and may even make the Dopant even stronger.

To defeat a Dopant, a Kamen Rider has to use one of his finishing attacks to forcefully eject and destroy the Gaia Memory, resulting in what is called a . Evolved Gaia Memories require a direct strike on its location within the Dopant's body to execute the Memory Break without the risk of killing the user. If the Dopant does not have a Living Connector, a Memory Break will not occur, however the Gaia Memory will still be ejected from the user's body. In order to defeat a Dopant that uses a Memory Driver, the belt must be broken in order to defeat the Dopant and cause the Memory Break.

Other Gaia Memories seen, yet not used in the series and its related movies include , , , , , , , , , , , , , , , , , , , and

Gaia Impact

The is an event that was planned by Ryubee Sonozaki to enable all humans to be made one with the Earth, the result of his fear for the certainty of humanity's future due to the extensive extinctions that he studied as a paleontologist and archaeologist. This plan began when his son Raito (Philip) died after falling into the source of the true Gaia Memory and became a data entity and conduit for its powers, enabling the production of the artificial Gaia Memories for the next nine years. After Philip was saved by Sokichi Narumi and Shotaro at the request of Shroud (Fumine Sonozaki), the Gaia Impact was halted until Philip could be retrieved. The source was then used to monitor the use of Gaia Memories, collecting their data to prepare for the Gaia Impact.

After Kamen Rider Double accesses his Xtreme form, it enables the Museum to produce the for Ryubee's daughter Wakana based on the data, enabling her to transform from the ClayDoll Dopant into ClayDoll Xtreme and become the new conduit for the true Gaia Memory. After Ryubee convinces Philip to help with the family's plans once more after Philip discovers that he has been dead for several years, Philip is thrown into the source of the Gaia Memory once more, dissolving into data that Wakana absorbs until Shotaro stops Ryubee.

After Philip is separated from Wakana through the Xtreme Memory and Ryubee dies, Jun Kazu of Foundation X takes Wakana with the intent to convert her into data in order to upload her to one of the Foundation's satellites and have her kill all life on Earth that is incompatible with Gaia Memories. However, he must wait until her power as ClayDoll Xtreme fully resurfaces; after discovering that Philip's emotions are linked with Wakana's power level, he decides that the only course of action is to target everyone close to Philip in order to set the plans into motion. This fails when Shotaro rescues Wakana and, in the process, destroys the building and equipment necessary to cause the Gaia Impact. Afterwards, Kazu himself falls to Double, putting an end to his plan for the Gaia Impact for good. Afterwards, Foundation X stops funding Gaia Memory Research and pursuing the Gaia Impact.

In the series finale, after Wakana discovers that Philip has given up his life for her, she decides to modify the Gaia Impact to do what she believes is best for humanity; rather than making all of humanity one with the Earth or eliminate all life incompatible with Gaia Memories, she decides to sacrifice her existence to bring Philip back so he can protect the Earth with Shotaro as Kamen Rider Double.

Magma

is a man who was fired from his position at , acquires the Magma Memory, imbuing him with pyrokinetic abilities as the . However, while exacting his revenge against Windscale, Yousuke is consumed by the Gaia Memory's power and goes on a rampage. Shotaro finds Yousuke at the fifth Windscale building and defeats him as Kamen Rider Double CycloneJoker, executing the Joker Extreme Maximum Drive to destroy the Magma Memory. Before Yousuke can be handed over to the police, he is abducted and murdered by the T-Rex Dopant.

Yousuke Togawa is portrayed by YOH.

T-Rex

is Yousuke's girlfriend who was also fired from her position as Windscale's top designer, buys the T-Rex Memory with her boyfriend Yousuke to exact their revenge for both being fired. As the , she can cause massive shockwaves with its roars and can use debris to form a robotic T. rex body called the to increase its powers. However, when Yousuke goes berserk, Marina hires her childhood friend Shotaro to find Yousuke so she can kill him. Once Double destroys the Magma Memory, Marina uses her Dopant form to abduct and murder Yousuke. After Shotaro learns the truth, Marina tries to kill him as she assumes the T-Rex Dopant form. After a brief fight, T-Rex Dopant then transforms into the Big T-Rex and leads Double on a chase around the city. As Kamen Rider Double, Shotaro destroys the T-Rex Memory with HeatMetal's Metal Branding Maximum Drive and hands Marina over to the authorities.

Marina Tsumura is portrayed by . She previously portrayed Rin/Heavenly Saint Lunagel in Mahou Sentai Magiranger
Mahou Sentai Magiranger
, is Toei Company's twenty-ninth production of the Super Sentai television series. The action footage was used in Power Rangers Mystic Force and both shows had scenes simultaneously shot in New Zealand...

. As a child, Marina is portrayed by

Money

is a life-long gambler who is able to use others' tell
Tell (poker)
A tell in poker is a change in a player's behavior or demeanor that is claimed by some to give clues to that player's assessment of their hand. A player gains an advantage if they observe and understand the meaning of another player's tell, particularly if the tell is unconscious and reliable...

s to win. He is also the owner of the secret casino, using his powers as the to enforce payment of debts. By tricking debtors into having them bet their life force in a game of chance, he uses his powers to seal their life force into pseudo-memories called after they lose. As he holds the Life Coins in his Dopant body, his destruction would cause all of the people to die. Shotaro and Philip are able to beat Kaga out of Life Coins in a winner takes all game of old maid. After the Money Dopant is defeated and the Money Memory broken by means of the Metal Branding Maximum Drive, the Life Coins are unsealed and everyone is returned to normal.

Taizo Kaga is portrayed by .

Anomalocaris

The childish works as the head of one of the many Gaia Memory manufacturing centers scattered throughout Futo. As the , he can travel underwater, fire his fangs as if they are bullets, and transform into the . Due to the fact that councilwoman Miyabi Kusuhara is continuing her late husband's plans to build the Second Futo Tower and Ryubee Sonozaki sees it as a threat to his enterprise, Takamura is given the order to assassinate her. After giving a proto-model of his Anomalocaris Memory, a production-model, to his friend so he can serve as a decoy (defeated by Kamen Rider Double's Joker Extreme), Genzo later kidnaps the councilwoman's daughter Asuka to lure her mother into a trap. However, the Anomalocaris Dopant is defeated by Kamen Rider Double LunaTrigger and his Trigger Full Burst Maximum Drive.

Genzo Takamura is portrayed by .

One of the members of EXE transforms into an Anomalocaris Dopant and is defeated by Kamen Rider Joker's Rider Punch Maximum Drive.

Cockroach

is a sociopathic dōjinshi
Dojinshi
is the Japanese term for self-published works, usually magazines, manga or novels. Dōjinshi are often the work of amateurs, though some professional artists participate as a way to publish material outside the regular industry. The term dōjinshi is derived from and . Dōjinshi are part of a wider...

 artist who runs the Dark Bug Exterminator website, a blog where people write down the names of those they want dead and he carries out the deed as the , writing about his adventures in his self-published manga
Manga
Manga is the Japanese word for "comics" and consists of comics and print cartoons . In the West, the term "manga" has been appropriated to refer specifically to comics created in Japan, or by Japanese authors, in the Japanese language and conforming to the style developed in Japan in the late 19th...

 as the hero . His Dopant abilities include the ability to climb along walls and to move faster than oncoming attacks, much like a cockroach. Only Kamen Rider Double LunaTrigger's homing attacks are able to hit him, but with his speed he steals the Luna, Trigger, Heat, and Metal Memories from Double. Ikari then decided to take the rest of Double's arsenal to become more powerful. However, after Philip learns the Heaven's Tornado dance and uses it against the Cockroach Dopant, the Gaia Memories are retrieved, allowing for the Cockroach Memory to be destroyed by LunaTrigger's Trigger Full Burst Maximum Drive.

Ikari is portrayed by .

One of the members of EXE transforms into a Cockroach Dopant and is defeated by Kamen Rider Joker's Rider Kick
Rider Kick
The is the finishing move from the Kamen Rider Series. It has traditionally consisted of a flying side kick and is used against the monster/kaijin after it has been weakened from fighting with the Rider. Throughout the various Kamen Rider series, it has taken many different forms and has become...

 Maximum Drive.

Sweets

is a maid
French maid
French maid refers to a strongly modified style of servant’s dress that evolved from typical maids’ black and white afternoon uniforms of the nineteenth century . The designs of the French maid dress can range widely from a conservative look to revealing...

 at the Sonozaki estate with a sweet tooth that she cannot satisfy, only able to be a food critic instead of a pâtissière because she could not cook very well. In her Dopant form, she is able to fire a whip cream that hardens like cement to trap her enemies. As the , Yukiko kidnaps the top pâtissier
Pastry chef
A pastry chef or pâtissier is a station chef in a professional kitchen, skilled in the making of pastries, desserts, breads and other baked goods...

s hired by the Sonozaki family by dragging them in her state to a small building on the grounds to make pastries only for her. However, when Akiko attempts to weed out the wrong culprit with her sweets, Yukiko kidnaps her with Mai Asakawa, the daughter of her previous victim. Though intending to kill Akiko for disgracing her love for sweets, the Sweets Dopant is battered by Akiko using a chair before Kamen Rider Double finishes her off with HeatJoker's Joker Grenade Maximum Drive.

Yukiko Sasaki is portrayed by .

Another Sweets Dopant appears in Kamen Rider W Returns
Kamen Rider W Returns
is a set of two V-Cinema releases that serve as spin-offs of characters from the Kamen Rider W television series and films. These films focus on the characters of Ryu Terui as Kamen Rider Accel and Katsumi Daido as Kamen Rider Eternal...

s Kamen Rider Eternal entry, transforming from a man named in the credits as the . The character is portrayed by , head writer for Kamen Rider W.

Virus

The normally turns its user into the vector of a deadly plague that can wipe out entire cities. However, when uses the Virus Memory to save herself from a hit and run
Hit and run (vehicular)
Hit-and-run is the act of causing a traffic accident , and failing to stop and identify oneself afterwards...

, the transformation into the Virus Dopant is interrupted leaving only her consciousness fully enveloped in the Gaia Memory's corruptive influence. These events weaken the Virus Dopant, but also enables it to infect electronics. This ability leads to the creation of the , a formerly wrecked SUV that infects a human with its deadly virus upon impact. When the car is wrecked by Kamen Rider Double, the Virus Dopant begins using its physical form to exact Sachi's revenge on her ex-fiance who she learned was only a con man. After discovering the Virus Dopant's vulnerability to heat, Double HeatTrigger's Trigger Explosion Maximum Drive destroys the Dopant's physical body, causing the Virus Memory's ejection from Sachi's body and its Memory Break.

Sachi Yamamura is portrayed by .

Violence

is Wakana's manager, a weak willed man who loves her in spite of the abuse. Ageo is used by Wind Wave DJ in a scheme to force Wakana off the air, giving him the Violence Memory she buys. Overcome by the Memory's influence, Ageo assumes the alias of , targeting certain places of value to Wakana and portraying himself as a stalker. As the brutish , his left arm is strong enough to destroy anything in its path, even enough to smash through cars. He can compress his body into a wrecking ball-like form called the to cause more collateral damage. Once discovered, he abducts Wakana and is chased after by Kamen Rider Double. Before being defeated by means of LunaTrigger's Trigger Stag Burst Maximum Drive, he leads Wakana to Motoko.

Tsuyoshi Ageo is portrayed by .

Arms

, part of the burglar team with partner , is hired by Saeko to lure Philip out of hiding. Given the Arms Memory, it turns Kurata into a uncontrollable sadist as he turns his back on Fuyumi and the morals they followed. The is able to morph his left forearm into a variety weapons such as a gun and carries around a giant blade-like weapon called the . The Arms Dopant has his own personal Honda Valkyrie
Honda Valkyrie
The Honda Valkyrie is a motorcycle that was manufactured by Honda, from model years 1997 to 2003. It was designated GL1500C in the US market and F6C in other markets....

 motorcycle called the . The Arms Dopant goes on a burglary spree and claims to be a Kamen Rider to force Double into the trap, only able to capture Shotaro and Akiko to use as hostages. However, the unexpected return of Kamen Rider Double FangJoker, and eventual control of the form, turns the tables with the Fang Streiser Maximum Drive as the defeated Kurata is left for the police.

Kenji Kurata is portrayed by . He previously portrayed Ryoga Hakua in Bakuryū Sentai Abaranger.

Bird

is a middle school girl selected by Saeko to test the limits of one of the newest Gaia Memories: the Bird Memory. In addition to the fact that no one under the age of 20 is allowed to use a Gaia Memory, the Bird Memory can also be used by those without a Living Connector and it has an addictive side effect. When Akane runs away from home, her friend is the first to test the true powers of the Bird Memory out and decides to use it for fun with friends and until Touma decides to use it to attack people as the . They are stopped by Kamen Rider Double, and the two boys are taken into the hospital after suffering from some of the negative side effects of using a Gaia Memory without a Living Connector. Later, Akane is overpowered by withdrawal from the Bird Memory and attacks Philip who gets in her way of obtaining it. Consumed completely by the Gaia Memory, Akane is able to access the Bird Dopant's , only to be defeated after the Nasca Dopant assists Kamen Rider Double in finding the Bird Dopant's weak spot for a direct strike on the Bird Memory by means of CycloneTrigger's Trigger Bat Shooting Maximum Drive.

Akane Egusa is portrayed by . Toma Fujikawa is portrayed by . Yuichi Kanamura is portrayed by . Yayoi Kubota is portrayed by .

IceAge

is the son of flower coordinator
Floristry
Floristry is the general term used to describe production, commerce and trade in flowers. It encompasses flower care and handling, floral design or flower arranging, merchandising, and display and flower delivery. Wholesale florists sell bulk flowers and related supplies to professionals in the trade...

 , who received bad press due to her son's actions. Obtaining the IceAge Memory to become the with the ability to make absolute zero
Absolute zero
Absolute zero is the theoretical temperature at which entropy reaches its minimum value. The laws of thermodynamics state that absolute zero cannot be reached using only thermodynamic means....

 ice from attacks to clones, Kiyoshi uses it to attack anyone who makes him mad such as Shotaro when he unintentionally shoved Kiyoshi out of the way while looking for Makiko. After his clone is destroyed by Accel's Accel Glanzer Maximum Drive, believing the Dopant to be the one he is looking for, Kiyoshi runs into his mother as she takes the Gaia Memory from him to take the blame for the attack. However, Shotaro uncovers the truth as IceAge Dopant is defeated by Accel's Dynamic Ace Maximum Drive and Ryu Terui arrests Kiyoshi instead of killing him in revenge, only to learn that Kiyoshi is not his target when he discovers that he possesses the IceAge Memory and not the W Memory. Up until this time, the IceAge Dopant is only referred to as the .

Kiyoshi Katahira is portrayed by . He previously played Tsutomu Tsumura in Kamen Rider Hibiki
Kamen Rider Hibiki
is a Japanese tokusatsu superhero television series. It is the fifteenth installment in the popular Kamen Rider Series of tokusatsu programs. It is a joint collaboration between Ishimori Productions and Toei. Kamen Rider Hibiki first aired on January 30, 2005 and aired its final episode on January...

.

Triceratops

is a former FPD officer who transferred to the LAPD
Los Angeles Police Department
The Los Angeles Police Department is the police department of the city of Los Angeles, California. With just under 10,000 officers and more than 3,000 civilian staff, covering an area of with a population of more than 4.1 million people, it is the third largest local law enforcement agency in...

 under encouragement from her partner Masaki Mizoguchi, whom she loved. After the scrutiny and disappearance of Mizoguchi, Aya returns to Futo and purchases the Triceratops Memory in order to take revenge against the men responsible for Mizoguchi's disappearance and death: the crooked cops Himuro and Ken Akutsu. As the , she possesses superhuman strength, can generate spheres of plasma, and uses the as her weapon. However, after killing off Himuro and Akutsu, Aya's revenge shifts to Futo as the Gaia Memory's corruptive powers begin to take hold. She eventually gains the ability to transform into a giant bipedal Triceratops called the before Kamen Rider Accel stops her with the AccelGunner and its Gaia Cannon.

Aya Kujo is portrayed by . She previously portrayed Marika "Jasmine" Reimon/Deka Yellow in Tokusou Sentai Dekaranger
Tokusou Sentai Dekaranger
is the twenty-eighth production of the Super Sentai television series produced by Toei. The action footage from the show was used for the American series Power Rangers S.P.D..The opening catchphrase of the series is .-Story:...

.

Liar

is a street calligrapher and poet who uses the Liar Memory to become the , referred to in urban legends as the . Armed with the , a staff with a large speaker in a shape of a giant mouth, the Liar Dopant's signature move is converting any lie he says into his , forcing whoever it hits to fall under the Dopant's deception. Though he is paid by Yukiho to help Jimmy win the competition, he turns on her after she fails to pay him his ideal amount, revealing the ruse in front of Jimmy. Once his cover is blown, and his being a fan of Wakana's radio show used against him, the Liar Dopant is defeated through the combined powers of Kamen Riders Double and Accel, with Double dealing the final blow using CycloneJoker's Joker Extreme.

Sachio Sawada is portrayed by . In the music video for "Love♡Wars", the Liar Dopant make a cameo as he fights the Kamen Riders.

Puppeteer

is a children's author who has gained commercial success for his book which he wrote to reflect his feelings for his daughter Rikako who died several months ago. As the , he uses special puppet strings to take control of whatever he wishes and carries a flute that produces super-sonic waves. He uses these powers to take revenge against those who give his book harsh criticism by controlling his daughter's doll, Riko, as the instrument of his vengeance. He particularally seeks revenge against those who claim he did not truly love his daughter. After being exposed, getting a new puppet in Wakana by Isaka, Horinouchi turns his attention towards Akiko before being defeated by Kamen Rider Double CycloneMetal's Metal Twister Maximum Drive.

Keio Horinouchi is portrayed by .

Invisible

is a popular magician trying to follow in her grandfather Frank's footsteps. To emulate his most famous trick, the disappearing lady, Lily is given the Invisible Memory by Dr. Isaka, turning her into the . However, Isaka has modified the Invisible Memory such that she does not turn into a monstrous Dopant and making it impossible to remove from her body. She initially goes to the Narumi Agency for help in finding the man who gave it to her under the pretense that she wishes to have it removed, but instead she wants to be able to control the invisibility. Isaka agrees, stabilizing the Gaia Memory, only because he knows it will eventually kill her and he will be able to take it from her after she dies, giving him the power of invisibility without the Dopant transformation. However, by killing her and using his Engine Blade as a defibrillator to quickly revive her, Kamen Rider Accel removes the Invisible Memory and crushes it.

Lily is portrayed by . She previously portrayed Nanami Nono in Ninpuu Sentai Hurricanger
Ninpuu Sentai Hurricanger
is Toei's twenty-sixth production of the Super Sentai television series. The catchphrase for the series is . Its footage was used in the American series Power Rangers Ninja Storm .-Plot:...

.

Nightmare

is a college student at Futo University who fell in love with Himeka Yukimura when she called him her "prince". However, he soon realizes that Himeka tells this to any male who assists her, plaguing him with the thought that she will never love him back and giving him insomnia
Insomnia
Insomnia is most often defined by an individual's report of sleeping difficulties. While the term is sometimes used in sleep literature to describe a disorder demonstrated by polysomnographic evidence of disturbed sleep, insomnia is often defined as a positive response to either of two questions:...

 as a result. He acquires the means to become the in order to inflict this same pain on Himeka, by making sure she does not get a good night's sleep in fear of his attacks. In his Dopant form, Fukushima uses his dream manipulation powers to trap all of his rivals for Himeka's affections in their worst nightmares before using a massive dreamcatcher
Dreamcatcher
Dreamcatcher is a Native American cultural object.Dreamcatcher may also refer to:-Entertainment:* Dreamcatcher , a 2001 novel by Stephen King** Dreamcatcher , based on the Stephen King novel...

-like net to place them in a coma. Each victim is branded with a letter H
H
H .) is the eighth letter in the basic modern Latin alphabet.-History:The Semitic letter ⟨ח⟩ most likely represented the voiceless pharyngeal fricative . The form of the letter probably stood for a fence or posts....

 on their foreheads, standing for both "Himeka" and "Hajime". Though he fakes being among the victims to get Shotaro off of his trail, Fukushima is found out and his Nightmare Memory is destroyed by Kamen Rider Double LunaMetal's Metal Illusion Maximum Drive.

Hajime Fukushima is portrayed by .

Beast

, also known as , is a bank robber who a decade ago gained the Beast Memory and became the with superhuman strength and self-regenerative powers. Attempting an armored car robbery at the Futo Dam with his wife Suzuko, the case was investigated by Sokichi Narumi until the evidence went dry and when Isamu Bito turned himself in for the crime. By the present, now rich, Maruo is still looking for a bear statue that holds the Zone Memory. Once it returns to Suzuko's possession, the two return to the Futo Dam to finish their heist. However, the Beast Dopant is weakened by Kamen Rider Double CycloneJoker Xtreme's Prism Break Maximum Drive before being eventually defeated by the Bicker Charge Break Maximum Drive.

Maruo Arima is portrayed by .

Zone

, also known as , uses the powers of the to teleport anything she sees in a similar method in moving the pieces of a shogi
Shogi
, also known as Japanese chess, is a two-player board game in the same family as Western chess, chaturanga, and Chinese Xiangqi, and is the most popular of a family of chess variants native to Japan...

 board. Ten years ago, Suzuko used these powers to assist her husband in his crime wave before she lost the Zone Memory, later found by Sokichi Narumi who then hid it in a bear statue he kept in a vacation cabin. The Zone Dopant is also the first Dopant to have no humanoid form at all, resembling a floating pyramid with an eye at the top. When Shotaro finds it, he confronts Suzuko about having Isamu Bito take the punishment for her crime before she takes it back, enabling her to help Maruo out once more in his battle against Kamen Rider Accel. She is defeated by Kamen Rider Double CycloneJoker Xtreme's Bicker Finallusion Maximum Drive.

Suzuko Arima is portrayed by .

Yesterday

is the younger sister of Kirihiko who comes to Futo to take revenge against Saeko Sonozaki for her brother's death. With the powers of the , she is able to force anyone to repeat their actions from the previous day, before the target becomes comatose. Unlike other Dopants, Yukie is not driven insane by the Gaia Memory's influence, which allows her to choreograph her attacks to suit her needs. After attacking several landsharks
Speculation
In finance, speculation is a financial action that does not promise safety of the initial investment along with the return on the principal sum...

 attempting to buy the kindergarten
Kindergarten
A kindergarten is a preschool educational institution for children. The term was created by Friedrich Fröbel for the play and activity institute that he created in 1837 in Bad Blankenburg as a social experience for children for their transition from home to school...

 she and Kirihiko attended, she approaches the Narumi Detective Agency as looking for her lost cat . Shotaro takes on the case, allowing Yukie to manipulate his actions as Kamen Rider Double to attack Saeko the following day, but Accel saves her at the last minute. Yukie's identity is revealed, and she states that the attack is actually an audition to join the Museum. When she gets close enough to Saeko to exact her revenge, her powers are turned back to her due to Isaka's modifications of the Taboo Memory for such an attack. She is saved after Double CycloneJoker Xtreme's Prism Break destroys the Yesterday Memory, but its side effects finally manifest in total amnesia.

Yukie Sudo is portrayed by . She previously portrayed Yuka Yamazaki in Mahou Sentai Magiranger
Mahou Sentai Magiranger
, is Toei Company's twenty-ninth production of the Super Sentai television series. The action footage was used in Power Rangers Mystic Force and both shows had scenes simultaneously shot in New Zealand...

.

Quetzalcoatlus

is a worker at the Futo Bird Sanctuary who becomes the unwilling subject of Isaka's experimentation with the powers of the . After he kills her father, she is made to be the Quetzalcoatlus Memory's user and both her compatibility with the Memory and her fear of Isaka makes it stronger for him to use later. Isaka makes a copy of the Quetzalcoatlus Memory and uses it on a Red-and-green Macaw
Red-and-green Macaw
The Red-and-green Macaw , also known as the Green-winged Macaw, is a large mostly-red macaw of the Ara genus.This is the largest of the Ara genus, widespread in the forests and woodlands of northern and central South America...

 to further frighten Nagi by showing a sample of the Memory's powers as the giant Quetzalcoatlus Dopant, the monster Isaka would have her become. The Dopant drags Nagi off until Kamen Rider Double saves her. The copied Dopant is defeated by CycloneJoker Xtreme's Bicker Charge Break. Kamen Rider Accel Trial later destroys the Quetzalcoatlus Memory before it can be used on Nagi to make it more powerful for Isaka's use.

Nagi Shimamoto is portrayed by . She previously portrayed Nodoka Miyazaki in the Negima!! drama.

Hopper

The mysterious is a hitwoman who works for the Museum as one of its top two eliminators along with the Smilodon Dopant, originally a normal girl until her mind was rewritten by neuroscientist
Neuroscientist
A neuroscientist is an individual who studies the scientific field of neuroscience or any of its related sub-fields...

 Satoshi Yamashiro who was kidnapped to serve as a Museum researcher. She has purple hair, is dressed in Gothic Lolita attire, and carries a heart-shaped box full of that she eats and offers to others, often before attacking with her electroshock boots if they turn her down. As the , she is able to jump and kick with great intensity. She is called upon by Ryubee to murder Yamashiro when he escapes from the Museum. After mortally wounding Yamashiro, the Hopper Memory is destroyed through Kamen Rider Accel Trial's Machine Gun Spike Maximum Drive. Before Ryu can arrest her, the girl attempts to escape when the Smilodon Dopant kills her so she can not reveal any sensitive information concerning the Museum.

The Grasshopper Woman is portrayed by .

Gene

is an extremely shy independent film director who becomes the , able to use the on his right arm to alter the genetic makeup of anything he touches. Using his power, he made his magnum opus
Magnum opus
Magnum opus , from the Latin meaning "great work", refers to the largest, and perhaps the best, greatest, most popular, or most renowned achievement of a writer, artist, or composer.-Related terms:Sometimes the term magnum opus is used to refer to simply "a great work" rather than "the...

 on his own and then tricked theater goers into an empty room to sit through the 7-hour uncompleted film. After being easily defeated, Akiko decides to rehabilitate him by taking control of the movie's production, while trying to hook him up with its star Ai Nijimura who he impersonated beforehand, but this only upsets Toru due to Ai's character being rewritten from the dark figure as originally intended. However, after being used by Wakana to fuse the Gaia Progressor into her body and Akiko beating sense into him, Toru finally speaks his mind. Soon after, Toru gives up the Gene Memory, which is crushed to bits by Kamen Rider Double CycloneJoker Xtreme, and begins working on the movie in his own way with Ai.

Toru Kawai is portrayed by . He previously portrayed Long in Juken Sentai Gekiranger
Juken Sentai Gekiranger
is Toei Company's thirty-first entry in the Super Sentai franchise. Production began on September 29, 2006 with principal photography beginning on October 6, 2006. It premiered on TV Asahi on February 18, 2007, and concluded its airing on February 10, 2008...

.

Jewel

is a popular male model who had a perversed sense of love. When his high school friend Rui Jojima falls in love with their friend Satoru, Uesugi obtains the means to become the . Other than his ability to manipulate light and being impervious to most Maximum Drives, Uesugi uses his ability to turn Satoru into a diamond
Diamond
In mineralogy, diamond is an allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Diamond is less stable than graphite, but the conversion rate from diamond to graphite is negligible at ambient conditions...

 that he wears on his ring. He also forces Rui as his unwilling accomplice, making her seem to be the villain behind his crimes while appearing innocent as he turns many women into diamonds. However, Rui places a monkey wrench in the scheme by framing Detective Jinno and thus start a chain of events that exposes Uesugi and thwarts his plan to kill Rui off and leave town. By then, Philip manages to pinpoint the Dopant's one weakness and defeat him through the Bicker Charge Break Maximum Drive at the jewel's eye crack in his belt. With the Jewel Memory destroyed, Satoru and Uesegi's other victims are restored to normal.

Makoto Uesugi is portrayed by .

Old

is a palm reader in Futo who Shroud gave the Old Memory to in a calculated plan to get rid of Shotaro. As the , Soma took on the name of the , offering to age any person his customer hates for the right price, taking delight in his work. In his Dopant form, the Ager uses , an ooze similar to the Terror Dopant's Terror Field, to age his target. By turning around, the Old Dopant can switch from the rust-colored form he uses the Old Creak in to a patina-colored faster form that is geared towards combat. Although Shroud states that only the power of Kamen Rider W CycloneAccel Xtreme can defeat the Old Dopant, Accel holds the Dopant for Double CycloneJoker Xtreme to make a direct hit while in his aging state. When the Old Dopant assumes his fighting mode, Accel uses the Machine Gun Slasher to defeat the Old Dopant.

Takashi Soma is portrayed by .

T2 Dopants

In the movie Kamen Rider W Forever: A to Z/The Gaia Memories of Fate, the Dopants use T2 Gaia Memories, 26 special Gaia Memories developed by Foundation X based on Fumine Sonozaki's findings. Though originally in the possession of Jun Kazu before giving it to another member of the Foundation to take to their headquarters, the six of the T2 Gaia Memories end up in the possession of mysterious terrorist group NEVER while the rest are scattered across Futo. Unlike the original Gaia Memories, these memories appear to have some sentience, injecting themselves into people who are compatible with them (Watcherman and Santa-chan becoming the T2 Violence and IceAge Dopants) or causing a Living Connector to appear on someone's skin (Queen). There are also T2 Nasca and Weather Dopants. They are all individually flight-capable, and can be summoned to and from one location with the T2 Zone Memory's Maximum Drive. Further, the T2 Memories are extremely resistant to destruction, as a normal Memory Break does nothing to impede their functionality. All 26 T2 Memories are destroyed at the climax of the film by Kamen Rider Double CycloneJokerGoldXtreme.

The Gaia Memories in the movie are Accel
Kamen Rider Accel
is a fictional character in the 2009–2010 Kamen Rider Series Kamen Rider W, and is the series second Kamen Rider after the titlular Kamen Rider Double. The name comes from the English word "acceleration" and his motif is that of the letter A as well as a motorcycle.-Ryu Terui: is a superintendent...

, Bird, Cyclone, Dummy, Eternal, Fang, Gene, Heat, IceAge, Joker, , Luna, Metal, Nasca, Ocean
Ocean
An ocean is a major body of saline water, and a principal component of the hydrosphere. Approximately 71% of the Earth's surface is covered by ocean, a continuous body of water that is customarily divided into several principal oceans and smaller seas.More than half of this area is over 3,000...

, Puppeteer, Queen, , Skull
Kamen Rider Skull
is a fictional character who appears in the films of the 2009-2010 Kamen Rider Series Kamen Rider W. Kamen Rider Skull first appears in the film Kamen Rider × Kamen Rider W & Decade: Movie War 2010 in the portion Kamen Rider W: Begins Night, and then makes appearances in the Movie War 2010 portion,...

, Trigger, Unicorn
Unicorn
The unicorn is a legendary animal from European folklore that resembles a white horse with a large, pointed, spiraling horn projecting from its forehead, and sometimes a goat's beard...

, Violence, Weather, Xtreme, Yesterday, and Zone.

Oyakodon

In the Hyper Battle DVD, , the master of the Omuri
Omurice
Omurice, sometimes spelled , is an example of contemporary Japanese fusion cuisine consisting of an omelette made with fried rice and usually topped with ketchup. Omu and raisu being contractions of the words omelette and rice, the name is a wasei-eigo...

Fu omelette rice shop owned by his daughter Eriko, transforms into the ; his Gaia Memory possessing the combined powers of both the and the . Initially known as the , Izo attacks the Fuumen stand so that Omuri Fu becomes Futo's number one eating establishment and over powers Double and Accel when they meddle. But once Philip discovers the Dopant's true nature, Double CycloneJoker Xtreme defeats the Dopant with the Bicker Charge Break Maximum Drive. Luckily, the master of Fuumen decides not to press charges against Izo, having him work at his stand to pay back for the damages and help him start anew. Aida's transformation into the Oyakodon Dopant reflects Double's transformation sequence with the words and appearing.

The design of the Oyakodon Dopant is based on the winning entry of a Dopant drawing contest for Televi-Kun
Televi-Kun
is a Japanese monthly manga magazine published by Shogakukan, starting in May 1976. Its main target is elementary school aged boys, younger than the readers of shōnen manga...

 magazine and the Oyakodon Memory is based on the CycloneJoker Memory that came with the July issue of Televi-kun.

Izo Aida is portrayed by .
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