Kamen Rider 555 (仮面ライダー555, Kamen Raidā Faizu) is a Japanese tokusatsu series that serves as the 13th installment in the Kamen Rider franchise and the fourth entry in the Heisei era. The series follows loner, Takumi Inui, and Yuji Kiba, who died and became a monstrous Orphnoch, and their newfound friends as they become involved in a conflict between Smart Brain, Inc., a group of Orphnoch who seek to exterminate humanity, and alumni of the Ryusei School, who were charged with stopping the corporation with technology they are unable to use.
Takumi Inui (乾 巧, Inui Takumi) is a mysterious loner who became the Wolf Orphnoch (ウルフオルフェノク, Urufu Orufenoku) after being hit by a car when he was a child. He attempted to use his newfound powers to protect people, but his failure to save the Ryusei School reunion from Kitazaki and an implanted memory that made him believed he was the culprit forced Takumi to isolate himself from others out of fear of betraying them and forget that he became an Orphnoch. By chance, he encounters Mari Sonoda and follows her under the belief that the Faiz Gear case she was carrying was stolen from him days earlier. As a result, he reluctantly becomes involved in her crusade to fight the Orphnochs as Kamen Rider Faiz. Amidst conflicts with Masato Kusaka and Yuji Kiba, Takumi accepts his role as Faiz and joins the latter in protecting humans. Eventually, Takumi remembers his true nature as an Orphnoch and learns the truth behind the Ryusei School massacre before settling his rivalry with Kiba while defeating the Arch Orphnoch together.
As the Wolf Orphnoch, Takumi possesses increased power compared to sired and most original Orphnochs and superhuman speed and agility. As Kamen Rider Faiz, he utilizes the SB-555P Faiz Phone (SB-555P ファイズフォン, SB-555P Faizu Fon) in conjunction with the SB-555B Faiz Driver (SB-555B ファイズドライバー, SB-555B Faizu Doraibā) belt to transform. While transformed, he can perform Exceed Charge (エクシードチャージ, Ekushīdo Chāji) finishers and wields a variety of gadgets from the Faiz Gear, such as the SB-555L Faiz Pointer (SB-555L ファイズポインター, SB-555L Faizu Pointā) flashlight that he can use in Kick Mode (キックモード, Kikku Mōdo) to perform the (Axel) Crimson Smash ((アクセル) クリムゾンスマッシュ, (Akuseru) Kurimuzon Sumasshu) Exceed Charge, the SB-555C Faiz Shot (SB-555C ファイズショット, SB-555C Faizu Shotto) digital camera that he can use in Knuckle Mode (ナックルモード, Nakkuru Mōdo) to perform the (Axel) Grand Impact ((アクセル) グランインパクト, (Akuseru) Guran Inpakuto) Exceed Charge, and the SB-555H Faiz Edge (SB-555H ファイズエッジ, SB-555H Faizu Ejji) sword that he can use to perform the (Axel) Sparkle Cut ((アクセル) スパークルカット, (Akuseru) Supākuru Katto) Exceed Charge. The SB-555H Faiz Edge also doubles as a handlebar for his motorcycle, the SB-555V Auto Vajin (SB-555V オートバジン, SB-555V Ōto Bajin), which can transform into a support robot to aid him in combat. Additionally, certain gadgets allow Takumi to assume stronger forms, which are as follows:
During the events of the V-Cinema Kamen Rider 555 20th: Paradise Regained, Takumi utilizes the SB-555P20 Faiz Phone 20 Plus (SB-555P20 ファイズフォン20 Plus, SB-555P20 Faizu Fon Tuenti Purasu) in conjunction with the SB-555BN Faiz Driver Next (SB-555BN ファイズドライバーNEXT, SB-555BN Faizu Doraibā Nekusuto) belt to transform into Kamen Rider Next Faiz (仮面ライダーネクストファイズ, Kamen Raidā Nekusuto Faizu), which also has access to Axel Form.
Takumi Inui is portrayed by Kento Handa (半田 健人, Handa Kento).
Mari Sonoda (園田 真理, Sonoda Mari) is a member of the Ryusei School who strives to see the good in others and dreams of becoming a beautician. Though she was sent the Faiz Gear and SB-555V Auto Vajin by their foster father, Hanagata, she was unable to use them. After seeing Takumi Inui successfully use the equipment, she insists he accompany her in fighting the Orphnochs.
In an alternate timeline depicted in the film Kamen Rider 555: Paradise Lost, Sonoda serves as the leader of the Human Liberation Army (人間解放軍, Ningen Kaihō-gun), a guerilla force of anti-Orphnoch resistance fighters and the last known bastion of human resistance in an Orphnoch-dominated world.
During the events of the V-Cinema Kamen Rider 555 20th: Paradise Regained, Mari becomes the Wildcat Orphnoch (ワイルドキャットオルフェノク, Wairudokyatto Orufenoku) due to the activation of her implanted Orphnoch DNA by Smart Brain.
Mari Sonoda is portrayed by Yuria Haga (芳賀 優里亜, Haga Yuria). As a child, Mari is portrayed by Aoi Yūki (悠木 碧, Yūki Aoi).
Yuji Kiba (木場 勇治, Kiba Yūji) is a friendly and polite young man who became the Horse Orphnoch (ホースオルフェノク, Hōsu Orufenoku) after dying in a car crash and ending up in a comatose state for two years. Upon awakening, Yuji discovers his uncle sold his family's company and his girlfriend Chie Morishita left him for his cousin Kazuaki Kiba. After murdering Kazuaki and Morishita in anger, Yuji turns to Smart Brain for protection, only to learn of their tactics and resolve to fight them and protect humans using his Orphnoch powers. In pursuit of this goal, he befriends Yuka Osada and Naoya Kaido, but forms a rivalry with Takumi Inui due to a misunderstanding until they learn each other's true identities and intentions. Upon learning of Yuka's death, who he believed was killed by the police, Yuji kills Masato Kusaka for the Kaixa Gear, discards his ideals, and eventually replaces Kyoji Murakami as the chairman of Smart Brain. However, Yuji's humanity is restored following a final battle with Takumi and he later sacrifices himself to help him defeat the Arch Orphnoch.
In an alternate timeline depicted in the film Kamen Rider 555: Paradise Lost, Yuji maintained his desire to protect humans from other Orphnoch until Osada and Naoya are killed by the Elasmotherium Orphnoch and Yuji is manipulated by Smart Brain into believing humanity had betrayed him. Accepting the Orga Gear, one of two "perfect" Rider Gears created by Smart Brain that can only be used by Orphnoch, he agrees to serve them as Kamen Rider Orga (仮面ライダーオーガ, Kamen Raidā Ōga) and fights Takumi, who eventually defeats Yuji and shows him the error of his ways. Yuji subsequently sacrifices himself to weaken the Elasmotherium Orphnoch so Takumi can kill it.
As the Horse Orphnoch, Yuji wields a sword and shield and can transform further into a centaur-like Gallop Mode (疾走態, Shissō-tai). In the series finale and Paradise Lost, Yuji evolves into the Horse Orphnoch's Raging Mode (激情態, Gekijō-tai), gaining increased power. As Kamen Rider Orga, he utilizes the SB-000P Orga Phone (SB-000P オーガフォン, SB-000P Ōga Fon) in conjunction with the SB-000B Orga Driver (SB-000B オーガドライバー, SB-000B Ōga Doraibā) belt to transform. While transformed, he wields the SB-000S Orga Stlanzer (SB-000S オーガストランザー, SB-000S Ōga Sutoranzā) sword, which can switch between Dagger Mode (短剣モード, Tanken Mōdo) and Longsword Mode (長剣モード, Chōken Mōdo); the latter of which allows him to perform the Orga Stlash (オーガストラッシュ, Ōga Sutorasshu) Exceed Charge.
Yuji Kiba was portrayed by Masayuki Izumi (泉 政行, Izumi Masayuki).
Masato Kusaka (草加 雅人, Kusaka Masato) is a student of the Ryusei School and childhood friend of Mari Sonoda, having fallen in love with her after she saved him from bullies, and failed to attend the Ryusei School reunion. After learning of the massacre, he vowed to destroy the Orphnochs with extreme prejudice and wipe his hands of the blood he essentially spilled that night. To this end, he acquired the Kaixa Gear, which can only be used by Orphnochs or humans implanted with a sufficient amount of Orphnoch DNA, and became Kamen Rider Kaixa (仮面ライダーカイザ, Kamen Raidā Kaiza), using his implanted Orphnoch DNA to survive the belt's fatal side effects longer than its past human users and developing a rivalry with Takumi Inui. Eventually, Kusaka begins to suffer from the Kaixa Gear's side effects before he is killed by Yuji Kiba.
In an alternate timeline depicted in the film Kamen Rider 555: Paradise Lost, Kusaka is killed by Kamen Rider Psyga.
During the events of the V-Cinema Kamen Rider 555 20th: Paradise Regained, an android modeled after Kusaka and programmed to kill alumni of the Ryusei School who became Orphnochs is sent by Smart Brain, only to be destroyed by Takumi Inui as Kamen Rider Faiz. A second android Kusaka takes the android Kitazaki's place after the latter's destruction.
Kusaka utilizes the SB-913P Kaixa Phone (SB-913P カイザフォン, SB-913P Kaiza Fon) in conjunction with the SB-913B Kaixa Driver (SB-913B カイザドライバー, SB-913B Kaiza Doraibā) belt to transform into Kamen Rider Kaixa. While transformed and similarly to users of the Faiz Gear, he can perform Exceed Charges and wields a variety of gadgets from the Kaixa Gear, such as the SB-913B Kaixa Pointer (SB-913B カイザポインター, SB-913B Kaiza Pointā) binoculars that like the SB-555L Faiz Pointer can be used in Kick Mode for him to perform the Gold Smash (ゴルドスマッシュ, Gorudo Sumasshu) Exceed Charge and the SB-913C Kaixa Shot (SB-913C カイザショット, SB-913C Kaiza Shotto) digital camera that like the SB-555C Faiz Shot can be used in Knuckle Mode for him to perform his own version of the Grand Impact. Unlike Faiz, Kusaka also wields the SB-913X Kaixa Blaygun (SB-913X カイザブレイガン, SB-913X Kaiza Bureigan), which can switch between Gun Mode (ガンモード, Gan Mōdo) and Blade Mode (ブレードモード, Burēdo Mōdo); the latter of which allows him to perform the Kaixa Slash (カイザスラッシュ, Kaiza Surasshu) Exceed Charge. Additionally, he possesses the SB-913V Side Basshar (SB-913V サイドバッシャー, SB-913V Saido Basshā) motorcycle/sidecar combination that can convert into a walker-esque support mecha.
During the events of the V-Cinema Kamen Rider 555 20th: Paradise Regained, the android Kusaka utilizes the SB-913PXX Kaixa Phone XX (SB-913PXX カイザフォンXX, SB-913PXX Kaiza Fon Tuenti) in conjunction with the SB-913B Kaixa Driver to transform into Kamen Rider Next Kaixa (仮面ライダーネクストカイザ, Kamen Raidā Nekusuto Kaiza), which also has access to Axel Form. While transformed, he wields the twin bladed Kaixa Crosslasher (カイザクロスラッシャー, Kaiza Kurosurasshā) tonfa.
Masato Kusaka is portrayed by Kohei Murakami (村上 幸平, Murakami Kōhei).
Orphnochs (オルフェノク, Orufenoku)[a] are humans reborn as gray animal or plant-themed zombie-like monsters who were meant to be the next stage in human evolution. Two types seen throughout the series are "original" Orphnochs, dead humans who are subsequently resurrected as monsters, and "sired" Orphnochs, humans who survive being attacked by an Orphnoch similarly to vampires and werewolves, though they are weaker than originals. While both types are capable of switching between their human and Orphnoch forms, they suffer from a genetic flaw that causes them to eventually and inevitably disintegrate due to the human body being unable to withstand such a rapid evolution, with the use of Rider Gears accelerating the process. Additionally, there exists a third type called "evolved" Orphnochs, who are genetically perfect and significantly more powerful, but lack the ability to turn back into their human forms and can only reach this stage with assistance from the Arch Orphnoch.
All Orphnochs share superhuman abilities and senses as well as the ability to produce tendrils capable of killing humans or converting them into more Orphnochs. Furthermore, they are capable of withstanding conventional firearms, with some capable of withstanding attacks by Rider Gear users.
In an alternate timeline depicted in the film Kamen Rider 555: Paradise Lost, Orphnochs were able to retain the use of their human forms while adapting away the genetic flaw that shortened their life spans after overthrowing humanity as the dominant species on Earth.
Yuka Osada (長田 結花, Osada Yuka) is a teenage girl who was bullied by her younger sister, who their parents favored over her, and other girls from her school and basketball team. The emotional stress from this leads to her falling down snow-covered stairs, reviving as the Crane Orphnoch (クレインオルフェノク, Kurein Orufenoku), and slaughtering her sister and the basketball team. Following this, she meets Yuji Kiba and joins him in protecting humans, though she occasionally and secretly kills people she deems "bad guys". Throughout the series, she exchanges texts with Keitaro Kikuchi, eventually developing a semi-romantic relationship with him along the way, and developed a crush on Naoya Kaido, though he does not reciprocate. Near the end of the series, she is mortally wounded by the Bat Orphnoch and killed by Saeko Kageyama.
In an alternate timeline depicted in the film Kamen Rider 555: Paradise Lost, Osada joins Yuji and Kaido in proving to the Human Liberation Army that they were on their side. However, the trio fall into a Smart Brain trap, during which Osada and Kaido are killed by the Elasmotherium Orphnoch.
As the Crane Orphnoch, Osada can fly at incredible speeds, create afterimages, and possesses increased jumping capabilities and lung capacity, and superhuman hearing. Additionally, her film counterpart can assume a Flying Mode (飛翔態, Hishō-tai), gaining larger wings on her collar and sides as well as crane-like legs.
Yuka Osada is portrayed by Yoshika Katō (加藤 美佳, Katō Yoshika).
Naoya Kaido (海堂 直也, Kaidō Naoya) is an overly eccentric young man prone to incredibly fast speeches and constant mood swings who Eiichi Toda, the temporary chief of Smart Brain, sired as the Snake Orphnoch (スネークオルフェノク, Sunēku Orufenoku) to show Yuji Kiba and Yuka Osada how Orphnochs must make allies. In his younger years, Kaido played the guitar, but was sabotaged by his teacher, who destroyed his motor skills in his left hand, forcing him to abandon music. After struggling with his nature as an Orphnoch, Kaido lives with Yuji and Osada despite not sharing their desire to protect humans. Throughout the series, Kaido sides with Smart Brain, becoming Kamen Rider Faiz on one occasion and commander of their Riotroopers on a separate occasion, but his conscience ultimately stops him from committing heinous acts at the last second. Following Osada and Yuji's deaths, Kaido reintegrates into human society.
In an alternate timeline depicted in the film Kamen Rider 555: Paradise Lost, Kaido joins Yuji and Osada in proving to the Human Liberation Army that they were on their side, only to fall into a Smart Brain trap and come under attack by the Elasmotherium Orphnoch. Despite being mortally wounded, Kaido confesses his feelings to Osada before mounting a failed attack on the Elasmotherium Orphnoch, which eats him.
As of the web series Kamen Rider Revice: The Mystery, Kaido took on the alias of Naoto Kamiya (上屋 直人, Kamiya Naoto) and became a guitar instructor.
During the events of the V-Cinema Kamen Rider 555 20th: Paradise Regained, Kaido runs a ramen restaurant and looks after young Orphnochs, such as Hisao, Kouta, and Kei.
As the Snake Orphnoch, Kaido can spit acidic venom.
Naoya Kaido is portrayed by Mitsuru Karahashi (唐橋 充, Karahashi Mitsuru).
Teruo Suzuki (鈴木 照男, Suzuki Teruo) is an antisocial young boy whose parents were killed by the Barnacle Orphnoch and was subsequently placed in Smart Brain's orphanage Sousai Children's Home (創才児童園, Sōsai Jidōen) until Naoya Kaido found him and brought him to stay at the Kikuchi laundromat. Near the end of the series, the grasshopper-like Arch Orphnoch (アークオルフェノク, Āku Orufenoku), also known as the Orphnoch King, begins to awaken inside Teruo as it uses the boy's shadow to consume other Orphnochs and mature. Upon awakening and possessing Teruo's body, the Arch Orphnoch battles Takumi Inui and Yuji Kiba until the latter sacrifices himself to help the former defeat the Arch Orphnoch, who Saeko Kageyama secretly places in a stasis tank and goes into hiding with.
The Arch Orphnoch resurfaces during the events of the web-exclusive crossover series Kamen Rider Outsiders, having taken control of Smart Brain and found a new aide in the Smart Queen. While attempting to acquire the Genm Musou Corporation's technology to counter the threat of Zein, the Arch Orphnoch confronts its CEO Kamen Rider Genm before Gai Amatsu intervenes in an attempt to suggest an alliance to fight Zein instead. However, Genm and the Arch Orphnoch refuse and take their leave, with the latter declaring that he would never work with humans.
The Arch Orphnoch possesses the ability to "complete" regular Orphnochs' evolution by removing their humanity, pyrokinesis, the most physical strength out of any Orphnoch, and the use of tentacles and finger lasers capable of destroying regular Orphnochs.
Teruo Suzuki is portrayed by Kayato Watanabe (渡辺 彼野人, Watanabe Kayato) while Shun Kobayashi (小林 俊, Kobayashi Shun) portrays his shadow and the Arch Orphnoch is voiced by Hiroshi Yanaka (家中 宏, Yanaka Hiroshi).
Smart Brain, Inc. (スマートブレイン社, Sumāto Burein-sha) is a company that serves as a front for a group of Orphnochs who view themselves as a master race and are dedicated to overthrowing humanity by either annihilating them or converting them into Orphnochs as well as eliminate Orphnoch who do not agree with their ideals.
In an alternate timeline depicted in the film Kamen Rider 555: Paradise Lost, Smart Brain has become the world's ruling government following the Orphnochs' takeover of Earth.
As of the V-Cinema Kamen Rider 555 20th: Paradise Regained, the government has restructured Smart Brain with the aim of eliminating Orphnochs.
Kyoji Murakami (村上 峡児, Murakami Kyōji), also known as the Rose Orphnoch (ローズオルフェノク, Rōzu Orufenoku), is the underhanded chief of Smart Brain and successor to temporary chief Eiichi Toda following Toda's defeat at Kamen Rider Faiz's hands. Murakami is later overthrown by Hanagata and replaced with Yuji Kiba. Despite this, he seeks out the Arch Orphnoch in the hopes of correcting the Orphnochs' genetic instability, giving his life to awaken him.
In an alternate timeline depicted in the film Kamen Rider 555: Paradise Lost, Murakami was reduced to a head in a jar, but retains a significant command position in Smart Brain until the Elasmotherium Orphnoch fails to kill Takumi Inui and Murakami is murdered by Smart Lady on his superiors' orders.
As the Rose Orphnoch, Murakami possesses levitation, pyrokinesis, increased durability compared to most Orphnochs, and the ability to generate rose petals to damage or distract opponents.
Kyoji Murakami is portrayed by Katsuyuki Murai (村井 克行, Murai Katsuyuki).
Smart Lady (スマートレディ, Sumāto Redi) is the "mascot" of Smart Brain who works closely with the company's chief and helps fledgling Orphnochs. While she acts friendly and playful towards the many workers at Smart Brain, she does not realize that no one enjoys her company.
The first iteration of Smart Lady is portrayed by Hitomi Kurihara (栗原 瞳, Kurihara Hitomi) in the series and the film Kamen Rider 555: Paradise Lost, and the second iteration of Smart Queen is portrayed by Amane Shindō (進藤 あまね, Shindō Amane) in the V-Cinema Kamen Rider 555 20th: Paradise Regained.
Riotroopers (ライオトルーパー, Raiotorūpā) are Smart Brain's personal army of foot soldiers who all utilize mass-produced Smart Buckle (スマートバックル, Sumāto Bukkaru) belts.
The Lucky Clover (ラッキークローバー, Rakkī Kurōbā) are an elite quartet of Orphnochs who answer directly to Smart Brain's Chief.
Itsuro Takuma (琢磨 逸郎, Takuma Itsurō) is a cold, prideful, and initially quiet yet physically weak, cowardly, and clumsy member of the Lucky Clover who can transform into the Centipede Orphnoch (センチピードオルフェノク, Senchipīdo Orufenoku), enjoys reading poetry, and puts on a calm yet tough front despite being afraid of Kitazaki. Additionally, Takuma continuously seeks to impress Saeko Kageyama, despite fouling up their objectives whenever he does so, and secretly longs to resume his human life. Due to suffering multiple defeats across the series, Kitazaki bullies Takuma, who takes any opportunity to pay him back in kind whenever Kitazaki is weakened or hurt. After witnessing the Arch Orphnoch kill Kitazaki and remove Saeko Kageyama's humanity, Takuma flees and goes into hiding in human society, taking a job as a construction worker.
As the Centipede Orphnoch, Takuma possesses superhuman strength and speed, a body covered in toxic extendable spikes, the ability to fire blue energy rays, 180 degree vision, and the use of a spiky centipede-like whip.
Itsuro Takuma is portrayed by Jun Yamasaki (山崎 潤, Yamasaki Jun).
Saeko Kageyama (影山 冴子, Kageyama Saeko) is a calm yet sadistic and misanthropic member of the Lucky Clover who can transform into the Lobster Orphnoch (ロブスターオルフェノク, Robusutā Orufenoku), serves as the proprietor of the Lucky Clover's hideout, the Clover Bar, despises humans and Orphnochs who do not kill them, and provides emotional support to her fellow Orphnoch. Enjoying seeing her victims suffer and comforting them in disturbing ways, she has a habit of sending them a bottle of rare wine as their final drink. Upon learning of the Orphnochs' genetic flaw, she successfully seeks out the Arch Orphnoch to become immortal. Following the Arch Orphnoch's defeat, she goes into hiding with it and attends to its injuries.
As the Lobster Orphnoch, Kageyama possesses flexible armor, the ability to fire blue energy balls from her hands, gauntlets capable of withstanding most forms of attack, and the use of a rapier.
Saeko Kageyama is portrayed by Waka (和香).
J (ジェイ, Jei) is a foreign Orphnoch fluent in Japanese who usually travels with his pet chihuahua, Chaco, can transform into the Crocodile Orphnoch (クロコダイルオルフェノク, Kurokodairu Orufenoku), and possesses three lives. He is sent to kill Kamen Rider Faiz, but loses his first two lives to Kiyotaka Nishida and Masato Kusaka as Kamen Rider Kaixa. J is reluctant to continue until Kyoji Murakami threatens to brand him a traitor and punish Chaco unless he does so. J is eventually killed by Takumi Inui as Kamen Rider Faiz while Chaco comes into the care of a little girl named Keiko Kurata.
As the Crocodile Orphnoch, J possesses sharp claws and superhuman strength and durability along with his aforementioned three lives, which allow him to revive from attacks that would be fatal to regular Orphnochs. As he revives, he transitions from his initial Fight Mode (格闘態, Kakutō-tai) to his Strength Mode (剛強態, Gōkyō-tai), which is 1.5 times stronger than his Fight Mode and grants the use of the "Fakris Horn" claw, and his Violence Mode (凶暴態, Kyōbō-tai), which is three times stronger than his Fight Mode and grants the use of a sword and the ability to enhance his claws with blue flames.
J is portrayed by Kenneth Duria (ケネス・ヅリア, Kenesu Zuria).
Aki Sawada (澤田 亜希, Sawada Aki) is a formerly kind-hearted student of the Ryusei School who was killed by Kitazaki during his attack on the school's reunion, which led to Sawada becoming the Spider Orphnoch (スパイダーオルフェノク, Supaidā Orufenoku) as part of a Smart Brain experiment. Turning his back on his former life, he kills fellow classmate Saya Kimura to steal the Delta Gear and join Lucky Clover. Not long after joining, he develops a habit of folding animal-themed origami and lighting them on fire before initiating a massacre while listening to rap music, with the flame usually dying out once he kills the last person present. After returning the Delta Gear to the Ryusei School however, Kyoji Murakami brands Sawada a traitor. Realizing he still has some humanity left in him, he battles the other Lucky Clover members, sustaining mortal wounds against them, until he is fatally wounded by Masato Kusaka as Kamen Rider Kaixa. Before he dies, Sawada tells Takumi Inui to continue fighting as Kamen Rider Faiz to save humanity.
As the Spider Orphnoch, Sawada possesses superhuman strength, agility, accuracy, and jumping capabilities, the ability to cling to walls and ceilings, elastic limbs, spider silk-like hair capable of stretching and piercing concrete, fire spider silk from his mouth, a giant eye on his chest that is sensitive to movement, and the use of the "Hapo Shuriken", a wheel with eight spikes and a blade that can inject poison into targets that he can use as a melee and ranged weapon.
Aki Sawada is portrayed by Go Ayano (綾野 剛, Ayano Gō).
Kitazaki (北崎)[b] is an arrogant and violent member of the Lucky Clover, as well as the strongest and youngest member of the group, who can transform into the Dragon Orphnoch (ドラゴンオルフェノク, Doragon Orufenoku), suffers from mental incapacitation, enjoys bullying Itsuro Takuma, and attacked the Ryusei School reunion sometime prior to the series. Due to his powers, he became withdrawn from society, developing a childish outlook on others' suffering, which he sees as fun. Throughout the series, Kitazaki briefly uses the Delta Gear to become Kamen Rider Delta before becoming bored of it and successfully defeats the other Riders several times until he is defeated by Takumi Inui as Kamen Rider Faiz, which drives Kitazaki insane. Seeking revenge, Kitazaki would go on to battle Takumi several times, clashing with his fellow Lucky Clover members in the process. During the series finale, Kitazaki attempts to kill the Arch Orphnoch to prove his superiority, only to be killed by the Orphnoch King.
During the events of the V-Cinema Kamen Rider 555 20th: Paradise Regained, an android modeled after Kitazaki serves as the chief of Smart Brain and uses the Muez Gear to become Kamen Rider Muez after Rena Kurumi's death. He is destroyed by Takumi Inui as Kamen Rider Faiz.
In his human form, Kitazaki can turn anything he touches to ash, exhale red gas capable of disintegrating anything it comes into contact with, and fire destructive red energy blasts. As the Dragon Orphnoch, he can alternate between Demon-Human Mode (魔人態, Majin-tai), which grants bulky armor, superhuman strength and durability, and a pair of claws on each hand, and Dragon-Human Mode (龍人態, Ryūjin-tai), which grants superhuman speed and agility that rivals that of Kamen Rider Faiz Axel Form.
Kitazaki is portrayed by Ray Fujita (藤田 玲, Fujita Rei).
Keitaro Kikuchi (菊池 啓太郎, Kikuchi Keitarō) is a young man who dreams of making everyone in the world happy and possesses an Orphnoch allergy, though he believes he is allergic to people with bad hearts. After meeting Mari Sonoda and Takumi Inui by chance after they acquired the Faiz Gear, he allows them to stay with him at his family's dry cleaning business, West Washing Shop Kikuchi (西洋洗濯舗 菊池, Seiyō Sentakuho Kikuchi), in exchange for room and board in the hopes of encouraging them to use the Faiz Gear for good. Throughout the series, he exchanges texts with his pen pal, "Yuka", and becomes infatuated with Yuka Osada despite being unaware that they are the same person until later in the series.
Keitaro Kikuchi is portrayed by Ken Mizorogi (溝呂木 賢, Mizorogi Ken).
The Ryusei School (流星塾, Ryūseijuku) is a group of orphans fostered by Smart Brain's former chief, Hanagata, and schooled under their teacher, Mr. Masuda (増田教諭, Masuda-kyōyu). Prior to the series' beginning, they attended a reunion, where all of the alumni present were either killed or sired as Orphnoch, with only Masato Kusaka retaining his memories of the attack since he was not there. Hanagata sent the survivors three Rider Gears to combat the Orphnoch, but they are unable to use two of them due to compatibility issues and fatal side effects while the third causes megalomania.
Hanagata (花形) is the founder and former chief of Smart Brain who can transform into the Goat Orphnoch (ゴートオルフェノク, Gōto Orufenoku) and sought to evolve mankind for the better. To this end, he secretly took in orphans and had them experimented on to determine their potential for evolving into Orphnochs and locate the Arch Orphnoch. Furthermore, he developed the Rider Gears, most of which can only be used by Orphnochs or humans implanted with a sufficient amount of Orphnoch DNA, to protect the Arch Orphnoch once they were found. However, he discovered he was dying due to his Orphnoch nature, realized the error of his ways, and disappeared, taking the Rider Gears with him in the hopes of stopping humanity from becoming monsters. He would go on to become the Ryusei School's foster father and secretly give them the Rider Gears, believing they would be able to stop the other Orphnochs, and watched over them from the shadows for years.
In the present, Hanagata resurfaces to aid Takumi Inui and Masato Kusaka by giving them new equipment before stripping Smart Brain's current chief, Kyoji Murakami, of his duties and appointing Yuji Kiba as the permanent head of the company in response to the Arch Orphnoch's eventual awakening. While attempting to see his students, Mari Sonoda and Rina Abe, one more time, he is stopped by Kusaka, who learned of Hanagata's true nature as an Orphnoch. Hanagata stops him from transforming, but ultimately dies telling Kusaka to keep living due to miscalculating his time of death.
As the Goat Orphnoch, Hanagata possesses superhuman strength, speed, and agility as well as sharp horns. Additionally, he is trained in kenpō.
Hanagata is portrayed by Koji Naka (中 康治, Naka Kōji).
Rina Abe (阿部 里奈, Abe Rina) is a former alumnus of the Ryusei School who worked at Sousai Children's Home. She and her fellow alumni initially attempt to find a suitable user for the Kaixa Gear before most of them fall victim to the Delta Gear's addictive side effect. Abe temporarily takes up the mantle of Kamen Rider Delta and overcomes the side effect, but her lack of combat prowess forces her to give it to her friend Shuji Mihara, who initially refuses. After being hospitalized while retrieving the Delta Gear, she inspires Mihara to use it to fight the Orphnochs and goes on to become the head of Sousai Children's Home.
Rina Abe is portrayed by Rie Kasai (河西 りえ, Kasai Rie).
Kyosuke Tokumoto (徳本 恭輔, Tokumoto Kyōsuke) is a Ryusei School alumnus who tries to use the Kaixa Gear, but failed to out of fear due to its fatal side effects. After finding and using the Delta Gear before it was stolen by former classmate Aki Sawada, Tokumoto comes to believe that it is rightfully his due to its megalomaniacal side effects and joins forces with Ken Arai to kidnap Mari Sonoda in an attempt to lure out Sawada and take the Delta Gear back, only to be killed by Sawada.
Kyosuke Tokumoto is portrayed by Shun Saeki (佐伯 俊, Saeki Shun).
Shuji Mihara (三原 修二, Mihara Shūji) is an initially cowardly and pessimistic alumnus of the Ryusei School who desires to live a normal life and not involve himself with the Orphnochs. After his classmate Rina Abe is hospitalized in a vehicular accident while retrieving the Delta Gear, Mihara resolves to overcome his cowardice and join Takumi Inui and Masato Kusaka in fighting the Orphnochs as Kamen Rider Delta (仮面ライダーデルタ, Kamen Rider Deruta). After helping Takumi Inui and Yuji Kiba defeat the Arch Orphnoch, Mihara joins Abe in running the Sousai Children's Home.
Mihara utilizes the SB-333P Delta Phone (SB-333P デルタフォン, SB-333P Deruta Fon) walkie-talkie in conjunction with the SB-333B Delta Driver (SB-333B デルタドライバー, SB-333B Deruta Doraibā) belt and the SB-333DV Delta Mover (SB-333DV デルタムーバー, SB-333DV Deruta Mūbā) camcorder to transform into Kamen Rider Delta. While transformed, he can combine the SB-333P Delta Phone and SB-333DV Delta Mover to access the latter's Blaster Mode (ブラスターモード, Burasutā Mōdo), which has an alternate Pointer Mode (ポインターモード, Pointā Mōdo) that allows him to perform the Lucifer's Hammer (ルシファーズハンマー, Rushifāzu Hanmā) Exceed Charge. Additionally, he possesses the SB-VX0 Jet Sliger (SB-VX0 ジェットスライガー, SB-VX0 Jetto Suraigā) combat motorcycle. Unlike the other Rider Gears, the Delta Gear can be used by humans and Orphnoch, though it induces megalomania in most of its users.
Shuji Mihara is portrayed by Atsushi Harada (原田 篤, Harada Atsushi).
Masahiko Minami (南 雅彦, Minami Masahiko) is a heartless and corrupt high-ranking officer of the National Police Agency and mad scientist who believes monsters such as Orphnochs deserved to be experimented on or used as weapons. He also believes in using others regardless of species for personal gain and eliminating hindrances. After halting a police investigation into Yuka Osada so he can use her in his experiments, he arranges a deal with Smart Brain to use the Crab Orphnoch as well before capturing Osada. However, his captives escape while Minami is eventually killed by a vengeful Yuji Kiba.
Masahiko Minami is portrayed by Atsushi Ogawa (小川 敦史, Ogawa Atsushi).
Leo (レオ, Reo) is a foreign English-speaking Orphnoch and member of Smart Brain who uses the Psyga Gear, one of two "perfect" Gears developed by Smart Brain, to transform into Kamen Rider Psyga (仮面ライダーサイガ, Kamen Raidā Saiga), and appears exclusively in the film Kamen Rider 555: Paradise Lost. He leads the Orphnochs in their crusade to exterminate humanity under the personal supervision of Kyoji Murakami until he is killed in battle by Takumi Inui as Kamen Rider Faiz.
Leo utilizes the SB-315P Psyga Phone (SB-315P サイガフォン, SB-315P Saiga Fon) in conjunction with the SB-315B Psyga Driver (SB-315B サイガドライバー, SB-315B Saiga Doraibā) belt to transform into Kamen Rider Psyga. While transformed, he is equipped with the SB-315F Flying Attacker (SB-315F フライングアタッカー, SB-315F Furaingu Atakkā) jetpack, which can convert into Booster Rifle Mode (ブースターライフルモード, Būsutā Raifuru Mōdo). Additionally, the joysticks can separate into Tonfa Edge Mode (トンファーエッジモード, Tonfā Ejji Mōdo), which allow him to perform the Psyga Slash (サイガスラッシュ, Saiga Surasshu) Exceed Charge.
Leo is portrayed by Peter Ho (ピーター・ホー, Pītā Hō).
Smart Queen (スマートクイーン, Sumāto Kuīn) is an Orphnoch, the "mascot" of Smart Brain, and a secretary to the company's chief who assumes the appearance of Mari Sonoda and appears exclusively in the web-exclusive series Kamen Rider Genms: Smart Brain and the 1000% Crisis and Kamen Rider Outsiders. She uses the Delta Gear to fight Kuroto Dan, who kills her.
Smart Queen is portrayed by Yuria Haga, who also portrays Mari Sonoda.
Rena Kurumi (胡桃 玲菜, Kurumi Rena) is a leader of Smart Brain's Orphnoch extermination unit who appears exclusively in the V-Cinema Kamen Rider 555 20th: Paradise Regained. Due to allowing Takumi and Mari to escape, she is killed by the android Kitazaki deeming her as a traitor.
Rena utilizes the SB-666P Muez Phone (SB-666P ミューズフォン, SB-666P Myūzu Fon) in conjunction with the SB-666B Muez Driver (SB-666B ミューズドライバー, SB-666B Myūzu Doraibā) belt to transform into Kamen Rider Muez (仮面ライダーミューズ, Kamen Raidā Myūzu). While transformed, she wields the twin Muez Edge (ミューズエッジ, Myūzu Ejji) daggers, which can combine into a single dagger.
Rena Kurumi is portrayed by Rumika Fukuda (福田 ルミカ, Fukuda Rumika).
Jotaro Kikuchi (菊池 条太郎, Kikuchi Jōtarō) is a nephew of Keitaro Kikuchi who appears exclusively in the V-Cinema Kamen Rider 555 20th: Paradise Regained.
Jotaro Kikuchi is portrayed by Daiji Asakawa (浅川 大治, Asakawa Daiji).