Kiriya Kujo

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, also spelt as Kiriya Kujyo, is a medical examiner of Seito University Hospital who transforms into , and later after his revival as a Bugster. 
==History==
===Background===
Kiriya Kujo was a coroner who worked at the Medical Examiner's Office. Five years ago, he discovered through files obtained from the Ministry of Health that his friend, Jungo Aihara, afflicted with the Bugster Virus. When Jungo was informed that his illness was life-threatening, he was terribly upset and left the room, which led to Jungo ending up killed in a traffic accident. Kiriya blamed himself for Jungo's death and realized telling the truth might not always be the best thing to do.
He had since then became intent to figure out the origins of the Bugster Virus to find closure. Two years later, Kiriya Kujo became aware of Zero Day. Confronting the Genm Corp. CEO, Kuroto Dan, about this information, he blackmailed him into giving him a Gamer Driver and the Bakusou Bike Gashat in exchange for his silence. With the belt and Gashat, he was capable to transform into Kamen Rider Lazer.
===Secrets And Lies===
Three years later, Kiriya Kujo appeared at the Mighty Action X launch party following the Bugster's rampage, voicing himself things were getting interesting. From afar, Kiriya continues observing the Kamen Riders until he finally meets Emu Hojo. He asks Emu to save his colleague Yoshitaka Nishiwaki in exchange of regaining Mighty Action X Gashat from Taiga Hanaya. When Lazer advance to Level 2, he takes the form of a racing bike, but unable to reach his full potential unless riden by a Kamen Rider. Kiriya teamed up with Emu to defeat the Motors Bugster, but quickly turned on Emu to obtain a Bugster sample to examine, only for the "Black Ex-Aid" to destroy it.
Whenever Kiriya made his presence among CR, he would often lie to them in order to keep them in the dark. After Genm Corp.'s four new Gashats were stolen, Kiriya allegedly stated that the Gashat thief is the Black Ex-Aid, only to turn out to not be Graphite. He claims that it is sometimes nessasary to lie in order to make things better. Kiriya does work with Emu for another time to obtain the Giri Giri Chambara Gashat. He would attempt to expose the Black Ex-Aid as Kuroto Dan, only for his opponent to fool everyone into thinking he lied to everyone again.
While he confronted Kuroto Dan, Kiriya questions why he is colluding with the Bugsters. Kuroto claims to search for the Bugsters' origins, while cluing Kiriya that Emu haven't underwent compatibility surgery. Kiriya began looking into Emu Hojo's unique condition, even researching the childhood surgery performed by Kyotaro Hinata. During Christmas Eve, Kiriya saved Emu from Drago Knight Hunter Z's influence and reaffirmed his trust. Kuroto would later reveal himself to the Doctor Riders as the "Black Ex-Aid", and christened himself as Kamen Rider Genm, proving Kiriya was telling the truth.
On Christmas Day, Kiriya meets Kuroto's father, Masamune Dan, in prison. He learned the true origins of the Bugster Virus and the truth regarding Emu's unique condition. When he gathers the doctors to disclose the information, Kuroto arrives to trick Kiriya into using the Dangerous Zombie Gashat, before transforming with it himself as Genm Level X to destroy Lazer in battle, seconds before the Doctor Riders arrived. As his body digitizes, Kiriya in his final moments entrusts Emu his Gamer Driver along with the responsibility to change the world's fate, before dissolving into data that Christmas night.
===The Patient Zero Conspiracy===
The death of Kiriya Kujo had severely impacted the Doctor Riders, in particular Emu Hojo, who initally couldn't focus on the work which led to him accessing Mighty Brothers XX that allowed him a winning edge against Genm. Hiiro Kagami and Taiga Hanaya grew more suspicous of Kuroto Dan as Kiriya would learn that he infected Emu with the Bugster Virus sixteen years ago and Patient Zero.
Before his death, Kiriya left behind valuable data on reprogramming to counteract the Bugster infection. It was revealed that he was looking for a way to stop the Bugsters by searching for the very first strain, which turned out to be Emu. He stored the information in his personal laptop, which his colleague Yoshitaka later hand to Hiiro. The program was later used as the main function of the Maximum Mighty X Gashat, which would be used by Emu to access Maximum Gamer Level 99 and defeat Genm.
===Revival as Lazer Turbo===
During the Kamen Rider Chronicle crisis, Masamune Dan seizes the Proto Gashats and forced Hiiro Kagami by his side. After Hiiro obtains Kiriya's Gamer Driver from Emu, Masamune demostrates his ability to restore deleted victims by reviving Kiriya as his "left-hand man". Kiriya is given a new Bakusou Bike Gashat to become Kamen Rider Lazer Turbo. Upon learning of his resurrection, Emu took the initative to reprogram Kiriya back to normal. However, he revealed that he was acting under his own volition. After whispering a message to Emu's ears, the latter punches Kiriya and declares they are no longer friends.
The next day, Kuroto Dan had completed the Hyper Muteki Gashat to combat Cronus' Pause ability, but Lazer Turbo would swipe it from Emu after he failed to use it. Kiriya learns that Masumune's intends to take advantage of Kamen Rider Chronicle's death toll to increase potential customers. After defeating Emu in battle, Cronus rewards Kiriya with the Hyper Muteki Gashat. However, he quickly reveals his ruse on Cronus and returns it back to Emu. Kiriya was present to witness Ex-Aid Muteki Gamer defeating Cronus for the first time. 
After being welcomed back at CR, he revealed that he returned the Proto Gashats. Although he reunites with Kuroto Dan, Kiriya still hated the man who murdered him, declaring he will have revenge one day. Kiriya would continue to provide his services in preventing Hyper Muteki from being rendered unusable against Cronus. Once Cronus displayed his Restart ability, Kiriya assisted Emu and Kuroto to recreate the Hyper Muteki Gashat, this time with a "Save" function to save their progress. After some trials and tribulations, the Kamen Riders advanced to the final stage of Rider Chronicle, preparing to confront the last boss Gamedeus.
===The Gamedeus Pandemic===
With Gamedeus and his Bugster Virus pandemic spreading rapidly, this led to Kuroto and Kiriya infecting themselves with Gamedeus' virus and fighting each other until one of them could develop an immunity to the virus. While most of Genm's lives were burned through, Genm and Lazer Turbo finally reached the needed point and Kuroto completed the Doctor Mighty XX Gashat. After Kuroto completed the Doctor Mighty XX Gashat, Masamune barged in to absorbed the Bugster into his own body at the last minute. This resulted in the fusion known as Gamedeus Cronus, proclaimed to be Chronicle's true final boss. Because of his role in the vaccine's creation, Kiriya was given a job at CR and a doctor's coat.
Kiriya was later afflicted by Super Gamedeus' virus, regressing to a rampaging Bugster Virus until Poppy sacrificed her life with the Doctor Mighty XX Gashat. Kiriya partipicates with the remaining Kamen Riders the final stand against Cronus by reverting back to Bike Gamer Level 2 to defeat Cronus once and for all. However, in their final confrontation, Masamune kills himself with the Master Gashat, this removing the only way to rescue the data of the patients within the Proto Gashats. Afterwards, he watches Emu presenting his televised speech on behalf of the Ministry of Health and amused that his name was mentioned as a Game Illness victim.
After arriving at Genm Corp., Kiriya met with the new CEO, Tsukuru Koboshi, with whom he would begin work on creating vaccines to neutralize the Bugster viruses starting with the Salty Bugster.
===Kamen Rider Ex-Aid: True Ending===
Along with Kuroto, Kiriya would investigate the occurrences of the new Bugster Virus outbreak along with the appearances of the Ninja-Players and Kamen Rider Fuma. After finding out from Koboshi that Genm Corp.'s servers had been hacked, Kiriya heads over to Machina Vision's company headquarters, though he and Johnny Makishima would later be infected with Hurricane Ninja's virus by Kagenari Nagumo. Upon being sent into Hurricane Ninja's game world, Kiriya meets up with Emu and tells him everything behind the game world's creation. Fuma later finds them, with Kiriya stepping aside as Emu is the only one who can transform and fight him. Kiriya is later brought back into the real world by Ex-Aid using the powers of Mighty Creator VRX.
Kiriya and Taiga later team up to fight Nagumo again, all while the latter's daughter Madoka is being operated on to cure her illness. After her operation was completed, Kiriya gives Nagumo a ride in his form so that he can see her.
A year later, Kiriya continues to work with Asuna on the Bugster vaccines for patients.
===Kamen Rider Heisei Generations Final: Build & Ex-Aid with Legend Riders===
One week after Kamen Rider Build stole Emu's powers, Nebula Bugsters start to appear due to the effects of Enigma, an inter-dimensional gateway connecting his reality to the Build's world. This alerts the CR, who attempt to solve the issue without Ex-Aid, but they are also rendered powerless due to the effects of Enigma, controlled by Right Kaiser. Kuroto Dan eventually created the Kamen Rider Build Gashats in order to enable to Doctor Riders to continue fight while their Earth and Build's Earth were vast approaching, where it was stopped by the united forces between Ex-Aid & Build.
===Kamen Rider Ex-Aid Trilogy: Another Ending===
Two years after the Enigma crisis, Kiriya and Hiiro discuss with Saiko Yaotome about moving forward with the regenerative medicine to restore victims of Game Illness. He was one of the first to pick up on the fact that Hiiro was hiding his troubles with a revived Lovelica, and approaches him with a map sketch detailing Lovelica's last reported locations, which Hiiro quickly snatches off of him. Kiriya is later approached by Saiko, and tells her he will be taking Hiiro's place in a later meeting, though he is slightly fazed by the female doctor's mannerisms.
After Emu is attacked by a dark doppelgänger of Parado, Kiriya rushed to his bedside in the hospital and learnt of the events that had transpired. Kiriya begins to investigate the Bugster cultivation game developed by Saiko and discovers that the female doctor is actually the daughter of the late Michihiko Zaizen, the person who had operated on Emu to extract Parado years prior. Furthermore, Saiko had also allied with Kuroto, who enacted his plan to become the ultimate god, though he would later turn against her to further his own agenda.
As Kuroto unleashes the final culmination of his plan in Zombie Chronicle, Kiriya fights off the horde of Zombie Gamers and saves a distraught Saiko from one. He reminds her not to give up on her aspirations as a doctor, telling her that she is the only one who can push forward the progress of regenerative medicine. Kiriya confronts Kuroto but is overwhelmed by the latter's newfound Level Billion abilities as God Maximum Gamer; even Masamune, who stepped into the battle as Cronus, was unable to stop Genm. In his last moments, Masamune hands over to Kiriya the Buggle Driver II, which has been imbued with Cronus' "Reset" ability. Despite Emu's protests, Kiriya decides to settle things with Kuroto once and for all. Kiriya was eventually able to overpower Kuroto with Lazer Level X's "Reset" ability to reduce Genm's God Maximum Gamer to nothingness. The battle eventually ends with both of them losing their lives, as Emu barely arrives in time to witness Kiriya's final moments.
In a surprising turn of events, however, Kiriya later wakes up in a hospital bed, where he learns that he has been fully regenerated into a restored human body once again thanks to God Maximum Mighty X's abilities. Kiriya gets emotional upon realizing that this was the ending that his rival had left for him, the player of his ultimate game. Heading back to the scene of their final battle, Kiriya leaves flowers for Kuroto and pays his respects, as he witnesses a vision of Kuroto, who declares that his games will never end.
==Other Events==
======
Together with a group of Chou Super Heroes, an iteration of Kiriya emerged from the Game World and quickly transformed into Kamen Rider Lazer Chambara Bike Gamer Level 3 to battle Galaxian Aliens. After Kamen Rider True Brave appeared and defeated the last of the enemies, the Chou Super Heroes returned to the Game World.
===Kamen Sentai Gorider===
As part of Kuroto's plan to revive himself in a backup game, Kiriya was revived alongside other deceased past Riders, such as Kaito Kumon, Yoko Minato and Kaoru Kino to have their negative energies absorbed. With Emu's arrival to clear the game, Kuroto manipulated the event to his advantage by impersonating Kazuma Kenzaki and had been doing this more than a single occasion, evidenced by Emu's memory of being killed several times. When the other three Riders began to suspect Emu as the mastermind, Kiriya was the only one to maintain his trust due to their friendship back then.
When Emu managed to unmask "Kenzaki" as Kuroto (with the real person emerges as well), Kiriya teamed up with the remaining Riders as they utilized the Goriders cards and sacrificed their only chance of revival for both Emu and Kenzaki to escape to the real world.
===Kamen Rider Heisei Generations Forever===
When Ex-Aid manifested in the World of Ataru due to the memories of the fans of Kamen Rider Ex-Aid, Lazer accompanied him in his Bike Gamer Level 2 form and was the motorcycle that Ex-Aid used during the final battle against Ultimate Another Kuuga.
==Personality==
Kiriya is an easy-going man whose lighthearted attitude hides a sharp intellect and cunning nature. As such, he is a manipulative individual and also a very convincing liar who will use dirty tactics to get what he wants, including deceit and sabotage. His deceitful personality actually developed from the trauma he experienced five years ago when his friend Jungo died from an accident when he freaked out over the possibility of dying from the Bugster infection. He also states to Emu and the others that he just tried to protect all of them from the harsh truth, showing that his lyings are his attempts to do what he believes is right, as shown in him calling out Emu for being blunt about Yoshio's condition, though it puts a rift between him and his comrades making him viewed as untrustworthy instead.
However, he still cares for his patients as shown when he found out that Nishiwaki's sister was kidnapped by Graphite and also Yoshio. But even then he did not stop being opportunistic and self-serving. He had the habitual quirk to drape his dull red leather jacket over his shoulders without putting his arms through the sleeves, and to wear round sunglasses whenever he is observing something, but he'll put his jacket on properly and discard his sunglasses whenever he needs to be serious or fight.
But despite his tremendous mental strengths, Kiriya suffers from a great deal of pride that he gets from the knowledge he obtains. This, in turn, causes him to become blind to his own weaknesses and the strengths of the people he believes to have leverage on. When he is serious enough, he won't lie. However, if someone outsmarts him or the situation turns against him to give the impression that he had been lying, he'll resort back to lying. This often leads to him casually claiming that he did, in fact, lie before instead of trying to defend his innocence, showing that he doesn't really care what other people think of him.
After returning back from the dead, Kiriya's personality doesn't change. His ability of lying is also his greatest advantage, as shown when he feigns his allegiance with Masamune Dan, the latter of whom is unaware of Kiriya's deception after reviving him.
== Powers and Abilities ==
=== Abilities ===
*Skilled Combatant: Kiriya has shown himself to be a skilled fighter, being able to easily take on Bugster viruses as a civilian with his natural athletic and acrobatic skills.
*Expert Acrobat: Kiriya incorporates his acrobat skills and also gymnastics into his fighting style to fight Bugster viruses as a civilian.
*Expert Deceiver: To be added
===Powers ===
* Acquired Game Illness Immunity: As a result of the standard compatibility surgery for CR candidates, Kiriya Kujo is immune to the Game Illness and able to transform into a Kamen Rider to fight the Bugsters.
Take a note that the power and the weakness which Kiriya acquire here is only when he had been revived as a Bugster. After the events of Another Ending, Kiriya had been turned back into human.
*Bugster Ability Restriction: One of the functions of Level 0 Gashats. Kiriya can seal certain abilities of Bugsters who are in his game area.
**Teleportation: Kiriya can teleport himself for simple travel or evade incoming assaults.
**Virus Neutralization: Thanks to Level 0's power being over nothingness, by touching any Gashacon equipment with a Bugster virus, Kiriya can neutralize the virus. This was demonstrated when he touched Cronus's Buggle Driver II containing Gamedeus's virus data.
===Weaknesses===
*Level 0: As stated by its name, Level 0 is the weakest level among all the levels, making Kiriya extremely vulnerable to any type of attacks, even the orthodox attacks can deal great damage on him. This disadvantage can be covered by utilizing advanced-level Gashats.
==Forms==
==Equipment==
===Devices===
*Gamer Driver - Transformation device
*Rider Gashat - Transformation trinkets
*Kimewaza Slot Holder - Carrier strap for the Rider Gashats
*Buggle Driver II - Transformation device used to transform into Lazer Lv.X
*Chambara Gamer - Lazer's Level 3 support robot summoned by the Giri Giri Chambara Gashat.
*Hunter Gamer - Lazer's Level 5 support robot summoned by the Drago Knight Hunter Z Gashat.
*Proto Combat Gamer - Lazer Turbo's support robot summoned by the Proto Jet Combat Gashat.
===Weapons===
*Lazer
**Front/Rear Armed Unit - The wheels in Level 2, also serve as shooter and punching unit in Level 1.
**Gashacon Sparrow - Chambara Bike Gamer Level 3's standard sidearm weapon.
**Dragon Blade and Dragon Gun - Hunter Bike Gamer Level 5 Dragon Claw's personal weapon.
*Lazer Turbo
**Gashacon Sparrow - Standard sidearm weapon
**Air Force Wingers and Gatling Combats - Proto Combat Bike Gamer Level 0's personal weapons.
** Trick Flywheels - Proto Sports Bike Gamer's personal weapons.
**Gashacon Bugvisor II - Borrowed from Poppy.
*Lazer-X
**Gashacon Bugvisor II - Given to by Masamune Dan after his defeat by Kuruto using Level Billion
**Gashacon Sparrow - Standard sidearm weapon
===Vehicles === 
*Bike Gamer - Lazer's old Rider Machine Mode/Level 2 form summoned by the Bakusou Bike Gashat that he can use to ride as Lazer Turbo.
*Proto Sports Gamer - Lazer Turbo's Level 0 Rider Machine summoned by the Proto Shakariki Sports Gashat.
==Legend Rider Devices==
==Relationships==
=== Friends ===
* Emu Hojo/Kamen Rider Ex-Aid: Kiriya is interested in Emu because of his gaming skill and personality. Of all the Gamer Riders, Kiriya finds Emu to be the best candidate for him to work with, despite Kiriya's constant lies when conversing with him which makes Emu and his other allies distrustful of him. In reality, Kiriya had put all of his faith into Emu, especially after learning that the latter was patient zero of the Bugster virus, believing that Emu had what it takes to end the Bugster threat once and for all. After clearing up misunderstandings between both of them, Kiriya proved to be the best friend Emu could ever have. And this could also be seen from Kiriya entrusting Emu with his Gamer Driver right before his death, as well as the important data he had left behind, which would later prove to be a valuable asset to the Riders with the creation of Maximum Mighty X. Ever since Kiriya was brought back to life, his treatment towards Emu was harsh. In fact, Emu tried to save Kiriya using the reprogramming but Kiriya reveals that he has been working for Masamune Dan under his own volition, putting their trust into questioning. Their relationship is strained after Kiriya whispered to Emu about a secret in their last battle. This gets subverted however when it is revealed that Kiriya was secretly working to get the Proto Gashats back and his traitorous behavior is simply a ruse to keep Masamune convinced that he's joining his side. In Kamen Sentai Gorider, he is the only one aside from "Kenzaki" to trust Emu after the other three deceased Riders suspected him as a traitor.
* Asuna Karino/Poppy Pipopapo: To be added
=== Allies ===
*Seito University Hospital
**Hiiro Kagami/Kamen Rider Brave: Kiriya had a hard time getting close with Hiiro as Hiiro never believed in Kiriya due to his lies. This is shown when Hiiro states that Kiriya's friend, Jungo, is not a victim of Zero Day, but rather of a mere accident. After Kuroto reveals himself as Kamen Rider Genm, Hiiro then finally believes what Kiriya had been trying to warn the Riders what he saw before. Eventually, they continued to work together after Cronus' defeat.
**Taiga Hanaya/Kamen Rider Snipe: Kiriya viewed Taiga as a dangerous person to approach and hardly asked for his co-operation. Taiga is the only Gamer Driver user that Kiriya never got close with. After Kuroto reveals himself as Kamen Rider Genm, Taiga then finally believes what Kiriya had been trying to warn the Riders what he saw before.
*Parado/Kamen Rider Para-DX: To be added
*Nico Saiba: To be added
=== Enemies=== 
*Genm Corp. 
**Kuroto Dan/Kamen Rider Genm: At first, Kiriya tried to make use of Kuroto to discover the truth behind the Bugster invasion, especially Zero Day. However, after learning the truth of Kuroto as Genm, he becomes Kiriya's number one nemesis. This hatred is further enhanced after Dan tricked everyone to believe that Genm is Parado. Despite being enemies, Dan claims he created the Gamer Driver and Rider Gashats to find out how the Bugsters could exist in the real world, not unlike Kiriya's own goal of searching for the truth behind the Bugsters. Unfortunately, Kiriya and the other three doctor Riders were too late to notice and stop Kuroto's true plan to gather more battle data to create the Dangerous Zombie Gashat. Not long after discovering Emu's secret, Kuroto ultimately kills Kiriya, and stole his Gashacon Sparrow and the Giri Giri Chambara Gashat. In Kamen Sentai Gorider, Kiriya was among the four deceased Riders whose despair was harvested by Kuroto to get himself revived. Ironically when his virtual world was damaged by Joker's power, Kuroto begged to the deceased Riders for their help in exchange for their revival but neither of them including Kiriya complied to his wishes, having accepted their original fates instead. When revived in the series, Kiriya still sees Kuroto as his enemy, but he admits that he will put that aside as Kamen Rider Chronicle is more important than settling things with him. Eventually, Kiriya got his revenge on Kuroto by using the latter as a guinea pig for the Gamedeus vaccine, the end result being Doctor Mighty XX, and subsequently turning Kuroto to the Ministry of Health.
**Masamune Dan/Kamen Rider Cronus: Kiriya first met Masamune when learning about the truth behind Emu's mysterious ability to transform without undergoing the compatibility surgery as well as the truth behind Zero Day, thus leading to his death shortly afterward at the hands of Masamune's son. During the events of Kamen Rider Chronicle, Masamune, after revealing himself as Kamen Rider Cronus, revives Kiriya as a Bugster, seemingly mind-controlled. In reality, however, Kiriya revealed to Emu that he is working for Masamune of his own free will, which later revealed to trick Masamune. Now Masamune became his ultimate enemy after Kuroto.
*Kagenari Nagumo/Kamen RIder Fuma: Kiriya suspects him being involved with the incident that recently happened involving his daughter. Lazer takes him to his daughter as she continues waiting for him.
==Behind the Scenes==
===Portrayal===
Kiriya Kujo is portrayed by . As Kamen Rider Lazer, his suit actor is in Level 1. His Level 2 form is based on a which is the same model as Machine Ghostriker. His suit actor from Chambara Bike Gamer Level 3 onwards, as well as Lazer Turbo Bike Gamer Level 0, is Hobby JAPAN Vol. 571.
===Etymology===
*The name Lazer is a play on the word , reflecting his racing game aesthetic.
==Notes==
Kiriya's White Uniform 1.png|Kiriya's white uniform in the OP
Kiriya's White Uniform 2.png|Kiriya transforming into Lazer in the OP
*In the show's first opening sequence, Kiriya is featured wearing an all-white uniform which he has never shown to have worn throughout the series.
*Lazer is the first Kamen Rider to also be a Rider Machine.
*As revealed in the Ex-Aid character book, Kiriya is 27 years old, making him the second oldest of the Gamer Riders.
*Unlike other Ex-Aid Riders who pick up or gesture their Rider profile pics by hand while they transform, Kiriya kicks the profile image instead.
*Lazer is the only Rider in series whose Rider Gauge is still visible in Chambara Bike Gamer Level 3.
**While in this form, Lazer has a second Rider Gauge on his shoulders, leftover from his Level 2 form. These do not function in Lazer's Level 3 and 5 forms, the function now transferred to the main Gauge on his chest.
*Kamen Rider Lazer is the only Supporting Rider in the show to appear in all three Heisei Generations Series films.
*In real life, Japan has steadily abolished the medical examiner system in medicolegal investigations. Instead, they are entrusted by the police.https://pubmed.ncbi.nlm.nih.gov/1752593/ Despite the above circumstances, there are quite a few medical examiners who specialize in these types of examinations, and there are a large number of people who also work as faculty members or practitioners in forensic departments at universities. 
**This is among to the creative liberties of Ex-Aid regarding Kiriya's occupation as Game Illness cannot be dissected because the body disappears with the death of the patient and Kiriya's role is more forensic than clinical. There are many instances in which Kiriya is acting against the intentions of the Ministry of Health and Genm Corp.
== Appearances==
==References==
==Navigation==
ru:Кирия Куджо
Bugster
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