George Karizaki

is a Fenix (now Blue Bird) scientist who created the Revice System. He briefly transformed into the third and became in his own right. 
==History==
===Background===
George Karizaki is the son of scientist Masumi Karizaki. Sometime in his youth, his father was responsible for the creation of the Vistamps during a breakthrough in separating humans from their inner demons. Due to his father's influence with Fenix, Karizaki was given the researcher position over Shogo Ueshima out of nepotism. Karizaki created the Revice Driver to counterattack the Deadmans after his father supposedly died.
During the Deadmans' raid at the Fenix Genome Laboratory, Karizaki was present that night as the majority of Vistamps were being seized. While a fellow scientist tells Karizaki to evacuate, he doesn't at the moment as he unveils the Revice Driver and Rex Vistamp. Believing the power of Kamen Rider Revice is necessary to combat the Deadmans, he declares it is time to fight fire with fire.
===The Deadmans Crisis===
Sometime after the Deadmans raided the Fenix Genome Laboratory, Karizaki reports to commander Yujiro Wakabayashi to deploy the Revice Driver, as he voices Daiji Igarashi to a potential candidate. During the Fenix commencement ceremony to unveil the Revice Driver, the Deadmans launch a big assault. Despite Karizaki's protests, Hiromi Kadota attempted to use the belt and fails. Although Karizaki tells Daiji to use the Revice Driver, Ikki Igarashi would use the belt to fight in his place. Karizaki was present to watch and christening the debut of 'Kamen Rider Revi' and 'Kamen Rider Vice'.
Once Ikki agreed to become a full-time Kamen Rider with Fenix, Karizaki continues providing them additional Vistamps in their fight against the Deadmans. After noticing Daiji is possessed by his inner demon, Kagero, Karizaki gave him the Two Sidriver. He developed a petty grudge on Vice after he insulted his original Jackal Genome design, taking great offense to his remarks. Karizaki later authorized Hiromi Kadota with the Demons Driver to become Kamen Rider Demons to keep an eye on Daiji until he regained control of his body. After learning that Sakura Igarashi has the scrapped Libera Driver in her possession, Karizaki was notably angered on how she retrieved the belt in the first place. With all ten Vistamps collected, he developed the Barid Vistamp for Ikki to harness the powers of the previous Genomes and Remixes.
===Kamen Rider: Beyond Generations===
In 2021, Karizaki would take notice of Diablo's resurgence after tipping to Daiji about the Deadmans' break-in at the abandoned Shocker base. He and Fenix's Kamen Riders would join forces with the Sword of Logos to stop Diablo as it emerges to threaten the Earth's future. They would also encounter Kamen Rider Century, revealed to be a time-displaced Shocker scientist Ryunosuke Momose, who sought to make amends with Hideo, his young son he left behind in 1971, who is now an adult man in 2021.
It would be revealed that his future self in 2071 is still alive and assists some of the Kamen Riders who arrived in the future to protect Ryunosuke. The Karizaki of the present would stay behind the Fenix Skybase with Mei Sudo to observe the Kamen Riders' battle to stop Diablo and the Crispers.
===Dismantling the Deadmans' Operations===
Following the Deadmans' raid in the Fenix Skybase, Karizaki grew suspicious of Commander Wakabayashi. It would turn out that the Chameleon Deadman had murdered and impersonated the commander. He surrendered the Giff Stamp to the Chameleon Deadman, not before slipping a tracking device. During the raid at the Deadmans' hideout, he gave Sakura a new Vistamp before turning his attention on Giff's coffin.
Following the destruction of the Deadmans' base, Fenix had recovered Giff's casket. Karizaki kept it in his lab for analysis. After congratulating Hiromi for becoming Fenix head commander, he is shocked to learn that Genta Igarashi has no heart during a medical check-up.
===Kamen Rider Revice: The Mystery===
While Ikki and Hiromi were investigating a murder mystery at Pension Nijitenka, Karizaki was at Futo meeting with the police superintendent, Ryu Terui, who is more famously known as Kamen Rider Accel. He was sent down to Futo regarding a Vistamp found at a crime scene. They both go to Zawame to meet with Oren Pierre Alfonzo and Hideyasu Jonouchi, learning that a Vistamp is dropped whenever a monster is defeated.
Karizaki and Ryu enter the lab of Shogo Ueshima, a Fenix scientist on the verge of creating a Vistamp based on ten invidiual monsters that past Kamen Riders fought. The two later head to the Pension Nijitenka lodge just as Ikki was outing Suzu Saionji as the true culprit behind the monster attacks. It was revealed Suzu was Shogo Ueshima's fiancé and blamed Karizaki for the latter's death. Suzu transformed into Oblivian intending to destroy Ikki, but ultimately was defeated. Afterwards, Karizaki is later shown secretly copying the data of the Oblivian Vistamp into a flash drive.
===Rise of the Gifftarians===
With the rest of the Deadmans generals now scattered, Karizaki's workload was no lesser than before as all Fenix's efforts prioritized finding Orteca, who was in possession of the Giff Stamp to unleash the Gifftarians. Karizaki grants him the Volcano Vistamp for Ikki to separate the Deadmen from their demons, although this could not be done with the Gifftarians. Although Ikki initally struggled withstanding the Volcano Genome's recoil, Karizaki made adjustments and warned him to be careful.
With Hiromi's health steadily on the decline, Karizaki was questioned regarding that the Demons Driver was harboring a demon inside. He simply replied that Hiromi wasn't the intended to use the belt. Karizaki went on to say that Hiromi was just an lab rat for his own experiments and his goals was to create the strongest Kamen Rider. He continued to analyze Giff's casket under Hideo Akaishi's supervision.
===The Fenix Conspiracy===
With Hiromi missing, the incident intensified the Igarashi siblings' distrust towards Fenix, along with Karizaki to some extent. After learning that Ikki transformed into Kamen Rider Jack Revice, Karizaki was angered of the existence of the Rolling Vistamp, which he did not create. He solved restoring Ikki and Vice back to normal, which took the latter some time of convincing. At the same time, Karizaki also became suspicious of the Ushijima family. He deduced that his father, Masumi Karizaki, is still alive and working for an organization that Hikaru Ushijima works for.
Wondering what his father's true intentions were, Karizaki researched the Igarashis and discovered Genta Igarashi was Kamen Rider Vail, meaning the reason to why siblings could transform is because they carry Giff's genes. After recovering the Demons Driver from Orteca, he became the third Kamen Rider Demons to assist Daiji and Sakura to subdue a rampant Jack Revice with the Thunder Gale Vistamp. While he was out of commission due to the Demons Driver's limitations, Karizaki was proud to witness Ikki and Vice becoming Kamen Rider Revice to defeat Orteca once and for all. Karizaki would finally reunite with his father Masumi at Weekend's base, but leaves without answering any offer to fight together.
===The Giff Uprising===
Having grown suspicious towards Director Akaishi, Karizaki would assist the Igarashi to put a stop to his schemes. In time, he uncovers Akaishi's relationship with Giff and became more determined to stop him. Karizaki was tasked to modify the Demons Driver without the need of Vail, but decided to let Hikaru Ushijima become Kamen Rider Over Demons. Akaishi proved to be many steps ahead of the Kamen Riders after turning Akemi into a Giffdemos and depleting most of Fenix's forces. After the destruction of Fenix Skybase, Karizaki moves into Happy Spa to continue his research.
He would later begin the development on Giffard Rex Vistamp and initially devised a plan to capture Akemi and extract Giff's cells from her body. However, the plan failed after Akaishi killed her before the extraction could be made. To complete the Giffard Rex Vistamp, Genta elected to provide Giff's cells to his body. While Karizaki and his father performed the surgery, the operation itself was nearly killing him until Ikki was able to stop it just in time. When Giffard Rex Vistamp flew away to Giff's domain, Karizaki hands Ikki a second Revice Driver for Vice to use.
After Ikki and Vice evolved into Ultimate Revice, Karizaki would continue to provide technical assistance for Weekend. Once he finally reunited with Hiromi, Karizaki made a heartfelt apology to him for using him as the Demons Driver's lab rat. He would unveil the mass-production Kamen Rider Demons Troopers and complete the upgrade of Vail Driver upon Genta's request. He would later be present on Genta's duel with Vail. Karizaki is then applauded by his father for the Destream Driver's creation before the later collapsed.
Back in Weekend base, Karizaki is shocked after learning Masumi revealed he transferred his inner demon when the former was only a child. Feeling betrayed, Karizaki would remain confined in a private lab expresseing his frustrations of being his father's pawn and coldly brushed off Masumi's declining condition. By the time he decided to visit Masumi, Karizaki was shocked to discover his father had passed away before he can say goodbye. Karizaki resolves to create a new Rider System that does not need demons while a dark influence looms behind him.
===Birth of Chimera===
While performing experiments with the Chimera Driver, Karizaki attempted to transform into Kamen Rider Chimera. However, the transformation failed and caused Chic, the demon that was transplanted from his father, to materialize. One of the two Giff eyes under his possession was stolen from him. This forced him to create a second Chimera Driver in order to get revenge on Chic.
===Price of Transformation===
Several weeks have passed and Karizaki commenced his mission to destroy every Rider System harnessing the power of demons. After attacking the Demons Troopers, Karizaki assaults Hana and Tamaki as Kamen Rider Juuga, destroying their belts in the process. He announced his intent to bring about true peace by destroying all demon-powered Rider Systems, as well as those with Giff's DNA, believing that the Juuga Driver is the power needed to achieve peace. Although the Igarashis tried to reason with him, Karizaki was intent to threaten the family.
He would demand Ikki to fight him, despite the risk pose to the latter's memories. The following day, Ultimate Revi and Ultimate Vice fought Juuga and were evenly matched. Despite Karizaki's objections, Ikki asserts that he simply misses his late father Masumi and were able to save Karizaki's broken heart. Despite Karizaki having the upper hand at first, Ultimate Revice proves to be the strongest Rider and defeats Juuga. Ikki and Hiromi show Karizaki the drawings he made as a child and made him reminisce the times with Masumi. Finally receiving the closure he needed, Karizaki breaks down in tears, admitting that he misses his father.
As a consequence of their final battle, Ikki loses memories of his entire family. Karizaki would apologize to Ikki for his actions, which spurs him to look for a way to restore them back to normal. After helping Ikki and Vice relocate to a former Fenix dormitory, Karizaki would then talk with Vice, telling him that his contract with Ikki should have been completed since Ikki no longer has a family to be remembered. This led the two to realize that there was one family member Ikki still needed to forget - Vice himself. Sometime later, Karizaki would later be approached by Vice to concoct a plan to fully restore Ikki's memories.
Karizaki watched as Ikki and Vice transformed into Ultimate Revice, deciding to battle on much friendlier terms. Everyone present was able to tearfully laugh in happiness and cheer on for the both of them. As the battle concluded, Karizaki watched Ikki and Vice's final moments and with that, Ikki's memories of his family are restored. A few months later, Karizaki would visit Orteca in his jail cell, the latter being sentenced for 666 years. He would reunite with Hiromi, who hands him a bouquet so he could visit his father's grave.
== Later Appearances ==
===Kamen Rider Geats × Revice: Movie Battle Royale===
===Revice Forward: Kamen Rider Live & Evil & Demons===
===Kamen Rider Juuga VS Kamen Rider Orteca===
===Kamen Rider Outsiders===
Sometime later, Karizaki became a supporter of Zein. He and armed Blue Bird guards appeared in front of Nico Saiba when she was at Genm Corp. The scientist showed her the Zein Driver and instructed her to deliver it to Sakuya Tachibana of BOARD after installing Kamen Rider Chronicle program into it. Tachibana revealed that Karizaki had convinced various Kamen Riders to lend their powers for the creation of Zein Cards. 
==Other Events==
===Kamen Rider Saber===
Karizaki appeared to record Kamen Riders Revi and Vice fighting alongside Kamen Riders Saber and Espada as they fought against the Batta Deadman. He complemented how he was in the presence in the fight with modern Reiwa Era Riders. After the Batta Deadman was vanquished, Ikki collected the Batta Vistamp which was given to Karizaki. Although elated, Karizaki admitted it was not part of the ten Vistamps that he was looking for, but nevertheless counted on Ikki to continue gathering them.
==Personality==
Karizaki is a cool-headed scientist who is quick-witted on handling a dire situation. He is also a Kamen Rider super-fan (especially Kamen Rider Kuuga), and though seemingly childish, is also part of what he sees as an experiment in order to create the ultimate Kamen Rider. Due to this, he will do anything to achieve his agenda that involves Revice and the Vistamps as a whole. This is most evident with him handing over the Two Sidriver to Daiji Igarashi, knowing that Kagero was a danger and withheld this knowledge because of his curiosity. However, he is not without compassion, as shown when Karizaki ultimately decides to give the Giff Stamp to the Chameleon Deadman in order to save both Daiji's and Hiromi's lives. He even revealed that he was forced to hide the truth about the Demons Driver from Hiromi under director Akaishi's orders, and later apologized to Hiromi for how he used him as a lab rat. After learning about the Igarashi Family's past and their intertwined relations with Giff, his compassion continues to extend towards them as he becomes well concerned for their safety, to the point of assisting them in his best capacity to repent for his mistakes.
Karizaki likes to insert English into his speech, mainly to express his surprise over unexpected things (this is also evidently in how he addresses his father; he always refers to him as "daddy" in English). Karizaki is also extremely petty and can easily be angered, holding a slight grudge against Vice for openly mocking his Jackal Genome concept. Out of spite, he changed Vice's Jackal Genome into a skateboard, and deliberately excluded Vice from getting an upgrade with Barid Rex, much to Vice's shock and annoyance. This attitude would apparently carry into the future, as he designs the Kangaroo Vistamp to turn Vice into a toy-like form to serve as the "joey" of the Kangaroo Genome's Remix, and the theoretical forms for the Kirin, Niwatori, and Funkorogashi Genomes for Vice appear just as ridiculous. On a more serious note, Karizaki holds a bitter grudge towards his father. However, he did not let it get the better of him, as he would continue to assist Weekend for the sake of protecting humanity.
However, Karizaki's pride on his achievements ultimately served to be his downfall. After learning that Masumi secretly transferred his own demon inside him, Karizaki lost self-hope and considered himself to be none other than a lingering shadow of his father. As his father was no longer alive, Karizaki's anger and resentment towards his father ultimately resulted in the manifestation of Chic. This revelation led him to arrogantly create a version of the Rider System that did not rely on inner demons, particularly the Chimera Driver, which he later perfected into the Juuga Driver. After becoming Juuga, Karizaki descended into madness and began to show several psychopathic tendencies, examples include when he attacked his former allies without remorse in his twisted mission to protect the world, even when others tried to present other solutions like Daiji handing him the other Drivers. However, all that madness actually stemmed from Karizaki's inability to accept his father after the reveal that he transferred Chic into him. Karizaki finally managed to let go of his anger and resentment once he learned that Masumi truly loved him and properly mourned his death.
==Abilities==
*Genius-Level Intellect: George was not only able to create the majority of the Revice System but was also able to conclude that a Rider Kick is effective in both separating a contract holder from a Phase 2 Deadman and forcefully suppressing Kagero from Daiji. George also has great attention to detail, being able to deduce the Chameleon Deadman's identity based on two small slips. He was also able to deduce the existence of Weekend and figure out that it was led by his own father Masumi Karizaki.
*Master Engineer: George created many of the Riders' gear, with the Revice Driver and the Vistamps to name a few. He also admitted that he created the scrapped Libera Driver, which was supposed to have been destroyed. 
*Rider Knowledge: George is well versed in all aspects of Kamen Rider, as evident with his knowledge of Riders and their secret identities, past techniques such as the Rider Kick, and several Kaijin groups, and uses said knowledge as inspiration for Revice's various Genomes. He is also a die-hard Kamen Rider fan, having amassed a large collection of toys (which are real world Bandai collectibles such as S.H. Figuarts, CSM belts and Rider helmet busts).
*Bilingualism: George speaks his native Japanese and enjoys inserting English words at times, though his actual level of fluency is unknown.
*Adept Combatant: Even before acquiring the Demons Driver, George often exercised in his office and displayed an adequate level of hand-to-hand combat proficient enough to briefly hold off a Gifftex like Orteca. His increased combat proficiency was also shown when he defeated various Riders as Kamen Rider Juuga.
*Peak Human Condition: George has six-pack abdominals and is shown with a home gym.
==Forms==
==Equipment==
===Devices===
*Demons Driver - Transformation device as Kamen Rider Demons
*Juuga Driver - Transformation device as Kamen Rider Juuga
*Vistamps - Transformation trinkets
*Vistamp Holder - Carrying straps for Vistamps
==Known Creations==
*Vistamps
*Revice Driver
*Gundephone50
*Ohinbuster50
*Osutoderuhammer50
*Two Sidriver
*Libera Driver (discarded; later salvaged and completed by Weekend)
*Mass Production Type Demons Driver
*Destream Driver
*Chimera Driver
*Juuga Driver
*Zein Driver
==Relationships==
===Family===
Masumi Karizaki.png|Masumi KarizakiFather (deceased)
George Karizaki's Mother.png|Unnamed mother
*Masumi: George holds a bitter grudge towards his father for faking his death, as well as his past actions. Although he later becomes aware that Masumi had paid a high price for his sins and is currently working out of repentance, George still has a hard time forgiving his father because of the repercussions his father's actions have had on many other people. Despite this, both father and son still hold a mutual level of respect for each other's work. Eventually, George would slowly let go of his bitterness, as he began working together with his father along with Weekend in the war against Giff. The two eventually reconcile, with Masumi being proud of his son for having surpassed him. However, Masumi revealed that he gave his own demon to George, which reopened the rift between them. This resulted in George obsessing over his work instead of meeting with his dying father, who subsequently passes without his son by his side. He soon targets the Riders who used his father's creations, namely the Week Endriver and the Demons Driver, damaged it and threw it on his fake grave to mock his late father. The rift between them finally closed off for good once George learned that Masumi truly loved him.
===Friends===
*Ikki Igarashi/Kamen Rider Revi: George helped Ikki become Revice in order to keep Vice under control. To that end, he became his support when battling the Deadmans (and later Giff) in mastering his powers and becoming the hero the world needs. In return, Ikki grows to put his faith into George as a reliable ally. However, their relationship would regress into hostility when George becomes Kamen Rider Juuga and seeks to eliminate everyone with Giff's genes. Once George got closure from him and Hiromi, their relationship returns to back to normal.
*(Kamen Rider) Vice: George and Vice have a very cheeky relationship. While Vice dislikes George's designs of several Genomes which make him look ugly, George is also petty over Vice's dislike of his work, denying Vice an upgrade to Barid Rex initially as payback. For a period of time, Vice became suspicious of George as well as Fenix, due to what happened with Hiromi. However, Vice learns to trust George with Ikki's guidance, while George also becomes more of an accepting ally towards Vice as he realizes how Revice's power grows with the bond between Ikki and Vice. Like his relationship with Ikki, it regresses into hostility when George becomes Kamen Rider Juuga and specifically targets demons like Vice. However, once George got closure from Ikki and Hiromi, their relationship returns to back to normal.
*Daiji Igarashi/Kamen Rider Live: Initially, George gave Daiji the Two Sidriver out of curiosity to see how Daiji's relationship with his inner demon Kagero would affect their power as a Kamen Rider. After learning about the Igarashi family's past, however, George becomes more concerned with Daiji's well-being. As director Akaishi's evil schemes begin to take root within Fenix, George has also taken note of its effect on Daiji's behaviour, and advises him not to let his emotions get the better of him. Though Daiji initially held a level of anger towards George over what happened with Hiromi, he eventually forgives him. However, they would regress into enemies temporarily when George becomes Kamen Rider Juuga and seeks to destroy everyone with Giff's genes. However, once George got closure from Ikki and Hiromi, their relationship returns to back to normal.
*Sakura Igarashi/Kamen Rider Jeanne: George was frustrated and flustered on how Sakura got the Libera Driver, since he threw it out. However, he decides to let her use it as Jeanne, recognizing her skills in karate, and also as a Rider. Their relationship would regress into hostility temporarily once George becomes Kamen Rider Juuga and seeks to destroy everyone with Giff's genes. However, once George got closure from Ikki and Hiromi, their relationship returns to back to normal.
*Hiromi Kadota/Kamen Rider Demons (I): Due to their conflicting personalities, both George and Hiromi have had somewhat of an uneasy relationship at work. Though George gave the Demons Driver to Hiromi as an experiment, he would later feel guilty in retrospect over withholding details about the Driver's effects on Hiromi. Even with Hiromi being furious with George over this matter, the two still respected each other, with George feeling relieved for Hiromi after the latter's initial decision to leave Fenix.
=== Allies ===
*Akemi Mikoshiba: George had worked together with Akemi to analyse Giff, even as they eventually realized the corruption that was taking root within Fenix. When Akemi was kidnapped and later turned into a demon by director Akaishi, George worked together with Daiji in an attempt to rescue her.
*Genta Igarashi/Kamen Rider Vail/Kamen Rider Destream: George was curious about the Igarashi sblings' father and how his children are able to transform, believing there's a connection. The more time moved, the more George discovered how the children can be become riders and how Genta had no heart. George recreates the Vail Driver into the Destream Driver for Genta to use in his final fight with Vail.
*Yukimi Igarashi: to be added
*Hikaru Ushijima/Kamen Rider Over Demons: When George was injured by Hideo Akaishi, Hikaru offered to become Over Demons in his place when he came to save the Igarashi siblings from Akaishi.
*Hana Natsuki/(Kamen Rider) Aguilera: to be added
*Go Tamaki/Julio/Kamen Rider Over Demons (II): to be added
*Kagero/Kamen Rider Evil: to be added
*Lovekov: to be added
===Enemies===
*(Kamen Rider) Orteca/Kamen Rider Demons (II): Orteca kidnapped George to demand him to unlock Demons' full powers, though George managed to take full advantage of the situation. As fellow geniuses in their domains, George and Orteca have developed somewhat of a frenemy relationship, with George taking pleasure in feuding with someone whom he could consider as his equal.
*Hideo Akaishi: On the surface, it would appear that George and director Akaishi had some sort of cooperation over Fenix's efforts to study Giff. However, in reality, Akaishi himself had absolute power and authority over Fenix's operations; even George had no choice but to comply with Akaishi's orders until he made up his resolve to defect from Fenix and fight for good.
*Giff: At first, George's curiosity was stimulated upon having the opportunity to study Giff's coffin. However, once he realized the true dangers that Giff posed to humanity, George would later contribute to assisting Weekend and the Kamen Riders to destroy Giff.
*Vail: to be added
*Chic: George's inner demon, who was given to him by his father.
==Behind the Scenes==
=== Portrayal===
*George Karizaki is portrayed by . As a child, he is portrayed by .
*His suit actor as Kamen Rider Demons and Kamen Rider Juuga is .
===Etymology===
*Kamen Rider Juuga's name is a combination of the Japanese word for and . Juuga uses the genetic information of 10 animals, and Kamen Rider Kuuga was the 10th installment of the Kamen Rider Series. It also forms the phrase https://www.kamen-rider-official.com/revice/weekly_items/47, and may also be derived from .
**Noritaka Hamao was previously nicknamed "Kuuga Boy" due to his birth date being near the premiere of Kamen Rider Kuuga.
==Notes==
==Appearances==
==Navigation==
Category:Revice Characters
Category:Rider Creator
Category:Fenix
Category:Weekend
Category:Blue Bird
Category:Heroes
Category:Reiwa Era Riders
Category:Revice Riders
Category:Temporary Riders
Category:Good turns evil
Category:Antivillains
Category:Evil turns good
Category:Supporting Riders
Category:Outsiders Characters