List of Kamen Rider Fourze characters

Kamen Rider Fourze (仮面ライダーフォーゼ, Kamen Raidā Fōze) is a Japanese tokusatsu series that serves as the 22nd installment in the Kamen Rider franchise and the 13th entry in the Heisei era. Transfer student Gentaro Kisaragi transforms into the titular hero Kamen Rider Fourze to battle the constellation-themed monsters called Zodiarts. Series' producer Hideaki Tsukuda initially planned on including various past Kamen Riders in the series to commemorate Kamen Rider's 40th anniversary. However, due to past series Kamen Rider Decade celebrating the 10th anniversary of the Heisei Kamen Riders, Kamen Rider Fourze appreciates the previous Kamen Riders' history and treats them as urban legends in-universe.
The primary setting of the series is the fictional Amanogawa High School (天ノ川学園高校, Amanogawa Gakuen Kōkō), abbreviated as AGHS (天高, Amakō), which the main characters attend. Additionally, the monstrous Horoscopes seek to transform Amanogawa High's students and faculty into more of their kind to expand their ranks.
The Kamen Rider Club (仮面ライダー部, Kamen Raidā-bu) is a club that Gentaro Kisaragi forms to gain new friends at AGHS, using past Kamen Riders as inspiration. After Gentaro becomes Kamen Rider Fourze, the club's members assist him in his battles against the Zodiarts and investigate the urban legends that surround the past Kamen Riders' existence. The club's headquarters is the remains of the Rabbit Hatch (ラビットハッチ, Rabitto Hatchi) lunar base, which is accessed by a Cosmic Energy (コズミックエナジー, Kozumikku Enajī) powered portal found in a locker in an abandoned section of the AGHS campus and was originally owned by the Outer Space Technology Organization (外宇宙技術開発機構, Gai Uchū Gijutsu Kaihatsu Kikō) abbreviated as OSTO (オスト, Osuto), which developed Fourze's technology and the Zodiarts Switches. After losing the Rabbit Hatch to the Zodiarts in the series finale, the Kamen Rider Club is reworked to become the Earth-based Space Kamen Rider Club (宇宙仮面ライダー部, Uchū Kamen Raidā-bu).
Gentaro Kisaragi (如月 弦太朗, Kisaragi Gentarō) is a second-year, later third-year, student at AGHS with a reckless, bad-boy image due to his delinquent yankee fashion sense coupled with a sociable attitude and a desire to befriend everyone he comes across. Throughout his time at AGHS, he goes on to become Kamen Rider Fourze and form the Kamen Rider Club.
Five years later, as of the events of the crossover film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, Gentaro has become an AGHS teacher and the Kamen Rider Club's new academic advisor before sacrificing his Rider powers to help his student, Saburo Kazeta defeat Kageto Banba.
The Fourze System consists of a spacesuit, the Fourze Driver (フォーゼドライバー, Fōze Doraibā) belt, and 40 Astroswitches (アストロスイッチ, Asutorosuitchi), all of which harness Cosmic Energy and were reverse-engineered from the Presenters' Core Switch by Rokuro Utahoshi, who was inspired by the Four Symbols and a hypothetical friendship-based system used by Kyoto's citizens' ancestors. As such, Gentaro is the only one who can access the Fourze System's full potential. Additionally, Mitsuaki Gamou compares Fourze's power to that of a gravitational lens due to Gentaro's influence on Astroswitches and Zodiarts Switches.
Utilizing the Fourze Driver and four Astroswitches, Gentaro can transform into the white-colored Kamen Rider Fourze Base States (ベースステイツ, Bēsu Suteitsu). While transformed, he can activate the Astroswitches' Fourze Modules (フォーゼモジュール, Fōze Mojūru) to assist him in combat and perform Limit Break (リミットブレイク, Rimitto Bureiku) finishers based on his active Modules, with his primary Limit Break being the Rider Rocket Drill Kick (ライダーロケットドリルキック, Raidā Roketto Doriru Kikku) via the Rocket (ロケット, Roketto) and Drill (ドリル, Doriru) Switches. The power of certain Astroswitches also allow Gentaro to assume varying States (ステイツ, Suteitsu) forms, which are as follows:
Additionally, Gentaro possesses additional States accessed from unique Astroswitches that appear in supplemental media connected to the series, which are as follows:
Gentaro Kisaragi is portrayed by Sota Fukushi (福士 蒼汰, Fukushi Sōta). As a child, Gentaro is portrayed by Tatsuki Ishikawa (石川 樹, Ishikawa Tatsuki).
Kengo Utahoshi (歌星 賢吾, Utahoshi Kengo) is a second-year, later third-year, student and Gentaro Kisaragi's level-headed and intelligent partner as well as the Core Child (コアチャイルド, Koa Chairudo), a physical construct made of Cosmic Energy that his adoptive father Rokuro Utahoshi created from the Core Switch that the alien "Presenters" sent to Earth to test humanity's ability to contact them, though Kengo was unaware of his true nature for most of his life. After losing Rokuro the day he was born and a year before the series, Kengo discovered the Fourze System, Rabbit Hatch, and the Zodiarts' existence and took on his father's mission to fight the monsters. Due to his weak physical constitution however, which he believed was a medical condition, Kengo is unable to properly utilize Rokuro's equipment and is forced to let Gentaro take his place while he serves as a tactician. Due to his desire to uphold his father's legacy, Kengo initially refuses to acknowledge the Kamen Rider Club, though he eventually warms up to them and Gentaro.
During his third year at AGHS, Kengo discovers the truth of Rokuro's death and realizes his nature as the Core Child. He uses his powers to foil Mitsuaki Gamou's plans to see the Presenters by destroying AGHS before intending to leave Earth and return to the Presenters himself with what he has learned about humanity. However, a vengeful Gamou destroys the Core Switch, causing the youth's body to dissolve into light particles. Following his final battle with Gentaro, Gamou revives Kengo as a human, leading to the latter staying on Earth with his friends.
Five years later, as of the events of the film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, Kengo became a scientist working to continue Utahoshi and Gamou's dream of seeing the Presenters.
Kengo Utahoshi is portrayed by Ryuki Takahashi (高橋 龍輝, Takahashi Ryūki).
Yuki Jojima (城島 ユウキ, Jōjima Yūki) is a bright and cheerful second-year, later third-year, student and Gentaro's childhood friend who cares deeply for her friends. After hearing a voice from the stars as a child, she became obsessed with becoming an astronaut and went on to become a self-proclaimed "space otaku" in the present. After meeting Kengo on the day he found the Rabbit Hatch, Yuki supports him in his endeavors and convinces him to let Gentaro join them, becoming the founding members of the Kamen Rider Club in the process. During her third year, Yuki becomes the Kamen Rider Club's new president after Miu graduates, using her ingenuity to lead her friends in their battles against the Zodiarts.
Five years later, as of the events of the film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, Yuki fulfilled her dream of becoming an astronaut.
Yuki Jojima is portrayed by Fumika Shimizu (清水 富美加, Shimizu Fumika). As a child, Yuki is portrayed by Kanon Kasuga (春日 香音, Kasuga Kanon).
Miu Kazashiro (風城 美羽, Kazashiro Miu) is a level-headed yet cocky third-year, later undergraduate, student who comes from an upper-class family, head cheerleader of AGHS, and "Queen of the School" (学園の女王, Gakuen no Joō) two years running, a title she earned in the Queen Festival (クイーンフェス, Kuīn Fesu) through effort and hard work. Among her philosophies as queen, she believes that she needs to know everything that occurs within the campus grounds and that one can only truly shine under their own power. Though she is well-loved by many at school, she displays a superiority complex over her classmates and sees those who are infatuated with her as sycophants who leech onto her for their own failure to shine. This mentality initially leads to her clashing with Gentaro. When her fellow cheerleader Tamae Sakuma humiliates her and reveals the negative aspects of her personality in front of their classmates in an attempt become the new queen however, a humbled Miu is reminded of her passion and returns to compete in the Festival despite the odds being against her. After winning a third time, she accepts Gentaro's friendship and joins the Kamen Rider Club, using her natural leadership skills to become its president and working with Kengo to coordinate group efforts. Over time, she becomes more caring of others and willing to step in herself if necessary. Following her graduation, Miu names Yuki the new president while the former becomes the club's chairwoman as her chosen college is close to AGHS.
Five years later, as of the events of Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, Miu has become a successful model.
Miu Kazashiro is portrayed by Rikako Sakata (坂田 梨香子, Sakata Rikako).
Kaizo Jingu (神宮 海蔵, Jingū Kaizō), better known as "JK" (JK（ジェイク）, Jeiku, pronounced "Jake"), is a cowardly first-year, later second-year, AGHS student with a gaudy appearance who serves as an information broker, trading secrets for favors. In his youth, he dreamed of becoming a rock star like his father, Keizo, and formed a rock band with his friend Tojiro Goto, only to give up the dream upon realizing he cannot sing. After learning of Gentaro Kisaragi's identity as Kamen Rider Fourze, JK agrees to keep the former's secret in exchange for protection from Fumihiro Nitta, a student the latter had wronged, while secretly intending to steal one of Gentaro's Astroswitches in an attempt to teach him a lesson about trust. However, JK is captured by Nitta, rescued by Kisaragi, and learns the true meaning of friendship before joining the Kamen Rider Club, using his connections to aid the group in identifying Switchers, Zodiarts, and their targets.
Following Miu Kazashiro and Shun Daimonji's graduation, JK becomes the Powerdizer's secondary pilot and sets up an internet radio show called DJ Gene Milky Night Carnival under the alias "DJ Gene" as a means of living out his childhood dream. When Goto returns as a Zodiarts and uses his powers to increase the show's popularity, JK finds himself conflicted by his loyalties to the Kamen Rider Club and refusal to give up on his dreams like his father had. Upon discovering Goto was brainwashing people, JK ends DJ Gene Milky Night Carnival in favor of cherishing his friendships.
Five years later, as of the events of the crossover film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, JK has become a journalist.
JK is portrayed by Shion Tsuchiya (土屋 シオン, Tsuchiya Shion). As a child, JK is portrayed by Wataru Sekine (関根 航, Sekine Wataru).
Shun Daimonji (大文字 隼, Daimonji Shun) is a third-year, later undergraduate, student, a stereotypical jock, and captain of the American football team who is treated like a king by the student body. Due to his life being planned out by his father, Takato, Shun was raised to believe that those beneath him are trash and that he should manipulate them to suit his needs. Additionally, he distances himself from anything that could potentially ruin his reputation for fear of shaming his father and their family name and paired himself up with Miu Kazashiro, the "queen" of AGHS. After a series of events lead to him receiving detention with Gentaro Kisaragi and the Kamen Rider Club, Shun reveals his history to them, how he is not truly happy with who he is or what he achieved, and that he considers himself an outcast due to his holier-than-thou attitude. Respecting his wishes, Gentaro inspires Shun to do what he truly wants while making his father happy, which subsequently leads to the latter joining the Kamen Rider Club as Gentaro's ally in combat via the Powerdizer. Over time, Shun slowly becomes more humble and friendly, though he experiences discomfort and guilt in response to others following his previous example and works to atone for his past misdeeds.
Five years later, as of the events of the film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, Shun has become a professional American football player and rekindled his relationship with Miu.
With his athletic prowess, Shun is capable of piloting the Powerdizer (パワーダイザー, Pawādaizā), a special OSTO exo-suit that requires an incredible amount of exertion to operate and possesses missile batteries, a land rover-like Vehicle Mode (ビークルモード, Bīkuru Mōdo), and a launch pad-like Tower Mode (タワーモード, Tawā Mōdo).
Shun Daimonji is portrayed by Justin Tomimori (冨森 ジャスティン, Tomimori Jasutin).
Tomoko Nozama (野座間 友子, Nozama Tomoko) is a spiritual first-year, later second-year, goth girl with an unorthodox sense of thinking, an acute sixth sense, and uncanny stealth. After joining other goth students in forming a coven while in pursuit of her dream of living on the moon, only to learn they are fake, she nearly becomes a Zodiarts until Gentaro Kisaragi brings her to the moon via the Rabbit Hatch. Despite being disappointed by the coldness of space, Tomoko finds comfort and acceptance in the Kamen Rider Club, joining them and providing assistance with her ability to detect things others overlook.
Five years later, as of the events of the film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, Tomoko has become a best-selling novelist.
Tomoko Nozama is portrayed by Shiho (志保).
Ryusei Sakuta (朔田 流星, Sakuta Ryūsei) is a mysterious transfer student from Subaruboshi High School (昴星高校, Subaruboshi Kōkō), and a former member of the Anti-Zodiarts Union (反ゾディアーツ同盟, Han Zodiātsu Dōmei) After his friend Jiro Iseki used a Zodiarts Switch that put him in a coma, Ryusei never forgave himself and vowed to never make friends again before receiving the means to become Kamen Rider Meteor (仮面ライダーメテオ, Kamen Raidā Meteo) and the task of locating the Aries Zodiarts from Tachibana.
Due to his search taking him to AGHS, Ryusei puts on a timid demeanor to infiltrate the Kamen Rider Club and secretly report on their activities for Tachibana while assuming his true aggressive nature as Meteor. Despite helping the Kamen Rider Club develop new technology for Fourze, Ryusei is manipulated by Aries into nearly killing Fourze in exchange for Aries reviving Jiro. While Ryusei's identity is exposed in the process and Aries upholds his promise, Jiro's worsening condition causes Ryusei to risk his life protecting the Kamen Rider Club, who forgive him and agree to keep his identity secret. Following the Zodiarts' defeat, Ryusei returns to Subaruboshi High.
Five years later, as of the events of the film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, Ryusei became an Interpol agent alongside Inga Blink.
On his own, Ryusei is a proficient martial artist and practitioner of Jeet Kune Do and the fictional Seishin Dairin Fist (星心大輪拳, Seishin Dairinken, Star-Mind Large-Ring Fist).
Utilizing the Meteor (メテオ, Meteo) Switch in conjunction with the Meteor Driver (メテオドライバー, Meteo Doraibā) belt, powered by Cosmic Energy supplied from the M-BUS (エムバス, Emubasu, Meteor Back-Up Satellite), Ryusei can transform into Kamen Rider Meteor. While transformed, he can perform the Meteor Tornado (メテオトルネード, Meteo Torunēdo) and Meteor Strike (メテオストライク, Meteo Sutoraiku) Limit Breaks. He also wields the Meteor Galaxy (メテオギャラクシー, Meteo Gyarakushī) brace, which grants abilities based on Mars, Jupiter, and Saturn as well as allow him to perform the Starlight Shower (スターライトシャワー, Sutāraito Shawā) Limit Break.
Utilizing the Meteor Storm (メテオストーム, Meteo Sutōmu) Switch in place of the Meteor Switch, Ryusei can transform into his ultimate form; Kamen Rider Meteor Storm (仮面ライダーメテオストーム, Kamen Raidā Meteo Sutōmu). While transformed, he can perform the Meteor Storm Strike (メテオストームストライク, Meteo Sutōmu Sutoraiku) Limit Break. He also wields the Meteor Storm Shaft (メテオストームシャフト, Meteo Sutōmu Shafuto) gun, which allows him to perform the (Max Power) Meteor Storm Punisher ((マックスパワー) メテオストームパニッシャー, (Makkusu Pawā) Meteo Sutōmu Panisshā) Limit Break.
Ryusei Sakuta is portrayed by Ryo Yoshizawa (吉沢 亮, Yoshizawa Ryō).
The Zodiarts (ゾディアーツ, Zodiātsu) are humans, or Switchers (スイッチャー, Suitchā), who utilize black Zodiarts Switches (ゾディアーツスイッチ, Zodiātsu Suitchi) to convert Cosmic Energy and that of their negative emotions into monstrous, constellation-themed construct bodies. If they use their Switch often enough, the Switch will gather energy until it transforms into its "Last One" phase. If the Switcher uses it at this point, their mind will be transferred from their human body to their Zodiarts form, which can potentially evolve into one of the Horoscopes (ホロスコープス, Horosukōpusu) if they unlock their Resurrection Star (最輝星, Saikisei) and absorb their human body. The Horoscopes, alternatively known as the Twelve Constellations of the Zodiac (黄道十二星座, Kōdō Jū-Ni Seiza), possess varying Supernova (超新星, Chōshinsei) abilities and red Horoscope Switches, can create Stardust Ninja Dustards (星屑忍者ダスタード, Hoshikuzu Ninja Dasutādo) to serve as foot soldiers, and assume themselves to be chosen by the universe to become superior beings.
Similarly to the Fourze System, the Zodiarts Switches were reverse-engineered by Mitsuaki Gamou from a Core Switch sent by the Presenters (プレゼンター, Purezentā), a mysterious alien race that sends Core Switches to various worlds to enable the planet's dominant race to contact them. Gamou created the Zodiarts and Horoscopes to withstand the rigors of transwarp travel and generate negative Cosmic Energy to convert an atmospheric vortex above AGHS known as "The Hole" (ザ・ホール, Za Hōru) into an extra-dimensional labyrinth called the Dark Nebula (ダークネビュラ, Dāku Nebyura) so he can reach the Presenters. After learning the Dark Nebula would also destroy AGHS and the city, the Kamen Rider Club eventually succeed in stopping Gamou.
Mitsuaki Gamou (我望 光明, Gamō Mitsuaki), initially credited as the "red-eyed man" (赤い目の男, akai me no otoko), is AGHS's egocentric and charismatic school board chairman who often uses space metaphors in his speech. Despite his charming personality, he lacks friends as he views the concept as beneath him. As a child, Gamou heard the Presenters' call around the time of the Apollo 11 exploration, motivating him to join NASA, the Russian Federal Space Agency, and the OSTO in an attempt to meet them. Twenty years prior to the series, while working for OSTO, Gamou found the Presenters' Core Switch alongside Rokuro Utahoshi on the moon. The pair cracked the Switch's puzzle, but clashed over how to contact the Presenters, with Gamou seeing Rokuro's Fourze System as a time-consuming dead end before he went on to develop the Zodiarts Switches. Three years after finding the Core Switch, Gamou tasked Kuniteru Emoto with getting the Zodiarts Switches from OSTO's lunar station and murdering Rokuro, though Emoto abandoned Rokuro on the moon instead. A decade prior to the series, Gamou received funding from Foundation X to build Amanogawa High directly under "The Hole" ostensibly in order to foster a love of space exploration in future generations while secretly utilizing the school to create and raise Zodiarts to gather the Horoscopes for the day he meets the Presenters, which he refers to as the Day of Awakening (覚醒の日, Kakusei no Hi). To this end, he became one of the first Horoscopes, the Sagittarius Zodiarts (サジタリウス・ゾディアーツ, Sajitariusu Zodiātsu).
Throughout the first half of the series, Gamou secretly uses AGHS to encourage the students to pursue individuality and whatever they please in the hopes that they can evolve and become Horoscopes. Additionally, he orders his subordinates not to eliminate Kamen Riders Fourze and Meteor as they provide an additional factor towards his Zodiarts' evolution. After Emoto reveals his true colors and aids the Riders however, Gamou reveals himself to the pair and searches for the Core Switch. When Utahoshi's son Kengo thwarts his Day of Awakening, Gamou destroys the Core Switch to kill Kengo before renewing his plans, only for Fourze to defeat him. Gamou accepts the Rider's ideals and friendship, but begins to evaporate into stardust due to years of working directly with Cosmic Energy. Before he dies, he asks the Kamen Rider Club to meet the Presenters in his stead before using the Aquarius Zodiarts' powers to repair the Core Switch and resurrect Kengo.
Due to years of saturating himself with high levels of negative Cosmic Energy, Gamou gained supernatural abilities in his human form, such as the ability to grant his fellow Horoscopes their Supernova powers and place hypnotic suggestions in people. As the Sagittarius Zodiarts, Gamou possesses durable armor and can generate the Gilgamesh (ギルガメッシュ, Girugamesshu) bow on his left arm, which can fire a barrage of Cosmic Energy arrows. His Supernova ability allows him to transform into Sagittarius Nova (サジタリウス・ノヴァ, Sajitariusu Nova), gaining increased agility, the ability to fire arrows directly from his left hand without Gilgamesh, and augment his attacks with negative Cosmic Energy. Similarly to Kou Tatsugami, Gamou can also utilize other Horoscope Switches.
Mitsuaki Gamou is portrayed by Shingo Tsurumi (鶴見 辰吾, Tsurumi Shingo). As a child, Gamou is portrayed by Musashi Takahata (高旗 武蔵, Takahata Musashi).
Sarina Sonoda (園田 紗里奈, Sonoda Sarina) is the youthful and beautiful AGHS homeroom teacher of class 2-B who teaches classical literature and serves as Mitsuaki Gamou's loyal right hand after Principal Hayami recruited her while she was an AGHS student. Secretly using her pleasant facade to befriend students and find ideal Horoscope candidates as the Scorpion Zodiarts (スコーピオン・ゾディアーツ, Sukōpion Zodiātsu), she initially works from the shadows, distributing Zodiarts Switches to vengeful students, before fighting Fourze to stop him from interfering with her targets and Gamou's plans. After being defeated by Fourze and Meteor despite attaining her Supernova powers and maintaining her secret identity however, Kuniteru Emoto seemingly banishes Sonoda to the Dark Nebula for her failure while Gamou acquires her Horoscope Switch and covers up her disappearance as a sabbatical, later resignation, for health reasons. It is later revealed that she was placed in suspended animation on the M-BUS.
As of the tie-in novel Kamen Rider Fourze: Ama High Grad-Uation, Sonoda is safely returned to Earth, where the Kamen Rider Club discover her connection to the Zodiarts. Additionally, it is also revealed that she had a childhood friend, Tsubasa Amano, who was killed in an accident following an argument they had. As a result, she blamed herself for it and developed a split personality based on him. While she was able to suppress it, the personality influenced her actions as the Scorpion Zodiarts and inspired Tsubasa, an alien that took on Sonoda's appearance and split personality. After Fourze defeats Tsubasa and the Kamen Rider Club help her come to terms with the latter, Sonoda surrenders herself to the police and is allowed to return to AGHS once she completes her sentence.
As the Scorpion Zodiarts, Sonoda utilizes a kick-based fighting style and possesses clawed gauntlets, a scorpion's tail-like ponytail that doubles as a whip, and the ability to envenom targets. Her Supernova ability allows her to transform into Scorpion Nova (スコーピオン・ノヴァ, Sukōpion Nova), gaining a scorpion man-like form that grants monstrous strength and the ability to store enough energy to destroy a city.
Sarina Sonoda is portrayed by Yuka Konan (虎南 有香, Konan Yuka) while the Scorpion Zodiarts is voiced by Eiji Takemoto (竹本 英史, Takemoto Eiji).
Kouhei Hayami (速水 公平, Hayami Kōhei) is the attractive and charming yet shrewd and inquisitive principal of AGHS who most everyone falls for and displays undying loyalty to Mitsuaki Gamou. True to his nature as the Libra Zodiarts (リブラ・ゾディアーツ, Ribura Zodiātsu), Hayami has a habit of using terms related to weight when talking to others. Following Sonoda's banishment, Gamou tasks Hayami with continuing her task of distributing Zodiarts Switches and accelerate their efforts to find the remaining Horoscopes, which the latter reluctantly agrees to by targeting his prized pupils while staying out of combat as much as possible.
After negating a version of "The Hole" over Kyoto to ensure only "The Hole" over AGHS can gather Cosmic Energy, Hayami learns Gamou intends to eliminate him now that his usefulness has ended. The former's desperation over staying with Gamou causes Hayami to manifest his Supernova ability, the Eye of Laplace (ラプラスの瞳, Rapurasu no Hitomi), which allows him to directly identify people who can evolve into Horoscopes by viewing their "Fate of the Stars" (星の運命, Hoshi no Sadame). Due to this new development, Gamou allows Hayami to stay until the Horoscopes have been found. However, Hayami slowly begins to question Gamou's goals and his place in it and considers betraying him. Nevertheless, Hayami ultimately chooses to remain by Gamou's side and sacrifices himself to save the latter from Kamen Rider Fourze. Before he is vaporized by "The Hole's" lightning, Hayami dies satisfied with his actions.
As the Libra Zodiarts, Hayami wields the Dikē (ディケ, Dike) khakkhara, which can cast illusions. As stated above, his Supernova ability allows him to identify Horoscopes, current and future.
Kouhei Hayami is portrayed by Kousei Amano (天野 浩成, Amano Kōsei).
Kuniteru Emoto (江本 州輝, Emoto Kuniteru) is an associate of Mitsuaki Gamou and Rokuro Utahoshi who worked as a research associate and studied Cosmic Energy with them at OSTO twenty years prior to the series. Out of jealousy towards Rokuro, who Emoto saw as the Earth to Gamou's sun and his moon, reflecting the sun's light while paling in comparison to them, Emoto formed a partnership with Gamou, stole the Zodiarts Switches from OSTO for him, and abandoned Utahoshi on the moon. However, Emoto came to regret his actions and vowed to take Rokuro's place as the Earth in their relationship to Gamou by subverting the latter's agenda. In pursuit of this, Emoto became the Virgo Zodiarts (ヴァルゴ・ゾディアーツ, Varugo Zodiātsu) to seemingly serve as Gamou's judge and executioner within the Horoscopes' ranks while secretly sending potential victims to the M-BUS for their own protection, assume the identity of the masked "Tachibana" (タチバナ) to secretly gain Kamen Rider Meteor and Rokuro's son Kengo's help, and utilize his occupation as a Kyoto Space University (宇宙京都大学, Uchū Kyōto Daigaku) professor to study a version of The Hole above Kyoto; using his Zodiarts form's teleportation powers to maintain all of his plans and identities.
After Gamou orders Kouhei Hayami to negate The Hole in Kyoto, Emoto transfers to Miraikan to become the Kamen Rider Club's instructor and use his Tachibana identity to train Fourze in using ruthlessness instead of friendship to get what he wants. When Tomoko Nozama discovers his identity, Emoto sends her to the M-BUS to conceal his secret before intimidating the other Kamen Rider Club members into leaving Fourze. However, Kengo's ingenuity and Hayami's powers lead to Emoto's secrets being revealed to the Zodiarts and Kamen Rider Club. Upon seeing Fourze's friends stand by him despite what he did, Emoto befriends Fourze and brings Nozama back, but is mortally wounded by Gamou and killed by Kou Tatsugami for his betrayal. Before he dies, Emoto reveals the truth of what happened to Utahoshi to Kengo, begs him to stop Gamou, and leaves behind a flash drive for Kengo detailing his history and Gamou's Day of Awakening.
As of the tie-in novel Kamen Rider Fourze: Ama High Grad-Uation, Fourze safely returns everyone that Emoto sent to the M-BUS to Earth.
As the Virgo Zodiarts, Emoto wields the Rhodia (ロディア, Rodia) halberd, can produce formidable barriers, fire black hole-like orbs, and conjure portals to send targets to other locations.
Kuniteru Emoto is portrayed by Hajime Yamazaki (山崎 一, Yamazaki Hajime) while the Virgo Zodiarts is voiced by Rie Tanaka (田中 理恵, Tanaka Rie), who also voices Shun Daimonji's mother, and Tachibana is voiced by Nobuyuki Hiyama (檜山 修之, Hiyama Nobuyuki), who also serves as the series' narrator.
Kou Tatsugami (立神 吼, Tatsugami Kō) is a skilled martial artist who originally took part in street fights as he had little to live for until he met and was bested by Mitsuaki Gamou, after which the former became fanatically loyal to him, serving as his personal aide and bodyguard. After helping Gamou achieve his goals and fighting Kamen Riders Fourze and Meteor as the Leo Zodiarts (レオ・ゾディアーツ, Reo Zodiātsu) on several occasions, Tatsugami is eventually defeated by Meteor and evaporates into stardust.
On his own, Tatsugami is an adept hand-to-hand combatant. As the Leo Zodiarts, Tatsugami possesses clawed gauntlets, a roar-based shockwave attack, superhuman speed, incredible durability, and the ability to produce personal kabuki-themed versions of the Dustards called Leo Dustards (レオ・ダスタード, Reo Dasutādo), which dual wield a pair of Duswords. Like Gamou, Tatsugami also possesses a unique physiology that allows him to use the other Horoscopes' Switches.
Kou Tatsugami is portrayed by Kazutoshi Yokoyama (横山 一敏, Yokoyama Kazutoshi).
Natsuji Kijima (鬼島 夏児, Kijima Natsuji) is an arrogant second-year student with a sharp tongue who displays hostility towards anyone who irritates him. Originally the president of the AGHS rakugo club, Kijima found a Zodiarts Switch that Kouhei Hayami dropped and becomes the Pegasus Zodiarts (ペガサス・ゾディアーツ, Pegasasu Zodiātsu), acquiring a taste for power. Using his Zodiarts form and partially for fun, Kijima seeks revenge on teacher Haruka Utsugi for taking his rakugo fan by attacking martial artists and mimicking her fighting style to frame her as the Pegasus Zodiarts. Despite the Kamen Rider Club deducing the truth and defeating Kijima, Kuniteru Emoto ensures he evolves into the Cancer Zodiarts (キャンサー・ゾディアーツ, Kyansā Zodiātsu).
Quickly winning Mitsuaki Gamou's favor, Kijima tactlessly flaunts his increased power, challenges Kamen Riders Fourze and Meteor constantly, and belittles Hayami for not treating him as an equal. After learning Meteor's identity, Kijima tortures the Rider in increasingly twisted ways and quickly gains his Supernova abilities. However, Meteor acquires new powers of his own and defeats Kijima. The latter goes to Hayami for help, but the principal uses his illusionary powers to disguise Kijima as a meddling detective and convince Emoto to send him to the Dark Nebula. Taking possession of Kijima's Horoscope Switch for Gamou, Hayami later claims Kijima died in battle while Kijima himself was secretly placed in suspended animation within the M-BUS.
As of the tie-in novel Kamen Rider Fourze: Ama High Grad-Uation, Kijima is safely returned to Earth.
As the Pegasus Zodiarts, Kijima possesses increased offensive capabilities and the ability to generate horseshoe-shaped energy blasts. As the Cancer Zodiarts, he possesses an impregnable carapace capable of withstanding most Limit Breaks, sharp pincers on his left forearm capable of slicing any material, the ability to liquefy himself, and the ability to remove people's life forces and place them in comas. His Supernova ability allows him to transform into Cancer Nova (キャンサー・ノヴァ, Kyansā Nova), taking on a more monstrous form that possesses incredible strength, an even more impregnable carapace, and the ability to store enough energy to destroy a city.
Natsuji Kijima is portrayed by Soran Tamoto (タモト 清嵐, Tamoto Soran).
Ran Kuroki (黒木 蘭, Kuroki Ran) is a first-year student at AGHS who is proficient in swimming and aikido. Though Gentaro Kisaragi tries to befriend her and her best friend Haru Kusao, she rejects his friendship outright due to an incident with senior students from her old middle school that convinced her to not trust students older than her and to protect Kusao. However, her ideals lead to Kusao becoming a Zodiarts because he felt she was smothering him. After receiving help from Kisaragi in bringing Kusao back to his senses, Kuroki apologizes to everyone involved and becomes a provisional member of the Kamen Rider Club until Kusao fully recovers.
Upon discovering she is the Pisces Zodiarts (ピスケス・ゾディアーツ, Pisukesu Zodiātsu), Kouhei Hayami attempts to delay the recruitment process until Kou Tatsugami brutalizes him to force Kuroki into activating her Zodiarts Switch and save the principal. Despite her Switch temporarily turning an immature blue instead of the Horoscopes' usual red, Tatsugami's plan eventually works and he steals the complete Pisces Switch from Kuroki, who is temporarily hospitalized following an attempt to fight Tatsugami without her powers. As of the series finale, Kuroki and Kusao become full members of the Kamen Rider Club.
As the Pisces Zodiarts, Kuroki can liquefy herself, swim through solid surfaces, and shoot high pressure water streams. Additionally, a clone of the Zodiarts seen in the film Kamen Rider Fourze the Movie: Space, Here We Come! wields an unnamed, double-headed trident-like weapon.
Ran Kuroki is portrayed by Rin Honoka (ほのか りん, Honoka Rin).
Rokuro Utahoshi (歌星 緑郎, Utahoshi Rokurō) is Kengo's father who worked for the OSTO at their lunar base, which would later become the Rabbit Hatch. While studying Cosmic Energy with Mitsuaki Gamou and Kuniteru Emoto, Utahoshi reverse-engineered the Fourze System from the Core Switch in the hopes that the finalized versions would be made for future generations after his death. Seventeen years before the series, Gamou tasked Emoto with getting the Zodiarts Switches from the OSTO lunar base to Earth. In the process, the latter abandoned Rokuro on the moon. Before he died, Rokuro left an inscription explaining the legacy he meant to leave behind with the Fourze System.
Rokuro Utahoshi is portrayed by Toru Kazama (風間 トオル, Kazama Tōru).
Chuta Ohsugi (大杉 忠太, Ōsugi Chūta) is a middle-aged, superstitious, and cowardly second year geography teacher, later third-year homeroom teacher, with a habit of punctuating his sentences by snapping his suspenders, which he always wears. Despite being disliked by several AGHS students and his belief that teachers should not be friends with them, he also believes that teachers should protect their students.
After becoming the Kamen Rider Club's homeroom teacher, Ohsugi makes it his mission to catch them committing misdeeds. This would lead to him discovering the Rabbit Hatch and their battle against the Zodiarts. In spite of their pleas, he intends to disband the club for varying reasons until he learns his fellow faculty members are involved in Zodiarts attacks and the Kamen Rider Club save him from one such monster. Following these, he agrees to give the club faculty approval, reconciles with them, and becomes their academic adviser. By the end of the series, his respect for the group and bravery have grown to the point where he is willing to put himself in danger to stop the Leo Zodiarts from harming the Kamen Rider Club.
Chuta Ohsugi is portrayed by Takushi Tanaka (田中 卓志, Tanaka Takushi) of Ungirls.
Toshiya Miura (三浦 俊也, Miura Toshiya) is a second-year AGHS student and a member of the American football team. Due to Shun Daimonji's father making unpopular decisions for the team and ruining his chances at playing football, Miura acquires a Zodiarts Switch and transforms into the Orion Zodiarts (オリオン・ゾディアーツ, Orion Zodiātsu) to seek revenge, only to be defeated by Kamen Rider Fourze. Despite this, Miura became addicted to the power of Zodiarts Switches and became a shut-in. Months later, Fourze, the Kamen Rider Club, and Miura's girlfriend Mari Yamamoto of the AGHS photography club investigate and learn of what happened to him and attempt to bring him back to school. When the Scorpion Zodiarts offers to turn him back into the Orion Zodiarts, Miura recalls his old self and resists the temptation before befriending Fourze and returning to AGHS as a member of the photography club to be with Yamamoto.
As the Orion Zodiarts, Miura possesses superhuman strength and endurance and wields the Lemnos (リムノス, Rimunosu) club and Chios (キオス, Kiosu) shield.
Toshiya Miura is portrayed by Masanori Mizuno (水野 真典, Mizuno Masanori).
Takashi Satake (佐竹 剛, Satake Takashi) is the cruel and unforgiving AGHS teacher in charge of the Sunday remedial class/detention session, which the students refer to as "Study Hell" (地獄補習, Jigoku Hoshū), believing it is where only the most troublesome students get sent to. Additionally, Takashi displays an extreme intolerance for delinquents, likening to them to dirt spots on a clean surface. After Fourze rescues his son Teruhiko however, Takashi has a change of heart and eventually goes on to become the new principal following Kouhei Hayami's death.
Takashi Satake is portrayed by Satoshi Jinbo (神保 悟志, Jinbo Satoshi).
Jiro Iseki (井石 二郎, Iseki Jirō) is one of Ryusei Sakuta's friends from Subaruboshi High School who acquired a malfunctioning Zodiarts Switch through unknown means in an attempt to become stronger than Sakuta, only for the Switch to put him into a coma. Due to the Switch remaining on and Iseki being the only one capable of turning it off, he is unable to be treated by conventional medicine. As a result, Sakuta became Kamen Rider Meteor and attempts to locate the Aries Zodiarts to save him. While Sakuta eventually succeeds in reviving Iseki, who deactivates his Switch, the latter is horrified to learn what the former did to save him, loses his will to live, and relapses. After helping Fourze defeat Aries, Sakuta makes amends with Iseki and helps him recover.
Jiro Iseki is portrayed by Ryusei Yokohama (横浜 流星, Yokohama Ryūsei).
Haru Kusao (草尾 ハル, Kusao Haru) is a meek first year AGHS student who receives a Zodiarts Switch from Kouhei Hayami and becomes the Musca Zodiarts (ムスカ・ゾディアーツ, Musuka Zodiātsu) to protect his overprotective friend Ran Kuroki, who had sworn to protect him at their previous school. As his Zodiarts form evolves however, Kusao becomes addicted to the Switch's power and his mental state grows increasingly unstable until Fourze restrains him long enough for Kuroki to apologize for being overprotective of him. After Kusao asks Fourze to defeat him, he is temporarily hospitalized and given provisional, later full, membership with the Kamen Rider Club alongside Kuroki.
As the Musca Zodiarts, Kusao initially has the ability to emit slime from his mouth and possesses increased jumping capabilities. As he evolves, he gains armor, increased strength, the ability to separate into a swarm of flies, wings, and the ability to emit explosive slime balls.
Haru Kusao is portrayed by Jigen Araki (荒木 次元, Araki Jigen).
Nadeshiko Misaki (美咲 撫子, Misaki Nadeshiko) is an alien lifeform called SOLU ("Seeds Of Life from the Universe") who mimicked her namesake's appearance, becomes an AGHS student, and makes her first appearance in the crossover film Kamen Rider × Kamen Rider Fourze & OOO: Movie War Mega Max. After seeing Gentaro Kisaragi transform into Kamen Rider Fourze, Misaki uses her alien powers to create her own Rider powers and transform into Kamen Rider Nadeshiko (仮面ライダーなでしこ, Kamen Raidā Nadeshiko). However, she is kidnapped by Suddendath of Foundation X, who turns her into the SOLU Switch for Lem Kannagi. After Fourze joins forces with Kamen Rider OOO to defeat Kannagi, Misaki becomes a being of pure energy and leaves Earth.
During the events of the crossover film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, XVII brings Misaki back to Earth to help Fourze and Kamen Rider Wizard defeat the Akumaizer.
Utilizing the Nadeshiko Driver (なでしこドライバー, Nadeshiko Doraibā) belt and two copies of Fourze's Astroswitches, Misaki can transform into Kamen Rider Nadeshiko. While transformed, she can use her alien powers to create copies and/or stronger versions of Fourze's equipment. She can also perform either the Nadeshiko Rocket Kick (なでしこロケットキック, Nadeshiko Roketto Kikku) finisher on her own or the Double Rider Rocket Punch (ダブルライダーロケットパンチ, Daburu Raidā Roketto Panchi) finisher with Fourze.
Nadeshiko Misaki is portrayed by Erina Mano (真野 恵里菜, Mano Erina), who also portrays the girl whose appearance Misaki mimicked.
Foundation X (財団X, Zaidan Ekkusu) is a mysterious research foundation that originally funded and researched the Museum's Gaia Memories before shifting their attention to other projects, such as funding Mitsuaki Gamou's work with Cosmic Energy and Zodiarts Switches.
Lem Kannagi (レム・カンナギ, Remu Kannagi) is a mysterious Foundation X agent who appears exclusively in the crossover film Kamen Rider × Kamen Rider Fourze & OOO: Movie War Mega Max. While searching for a mysterious substance called SOLU, which is only found in two meteorites that collided with Earth, he mutated human test subjects into the Super Evolved Lifeform Mutamits (超進化生命ミュータミット, Chō Shinka Seimei Myūtamitto) and created the Dummy Inhumanoids (ダミー怪人, Damī Kaijin), which are capable of assuming varying monstrous forms, from his mobile spaceship lab, Exodus (エクソダス, Ekusodasu). Upon gathering the necessary materials, he goes rogue, transforms into the monstrous Super Gingaoh (超銀河王, Chō Ginga Ō), and attempts to take over the world. However, he is defeated by Kamen Riders Fourze and OOO, who destroy him along with the Exodus.
On his own, Kannagi can utilize his breath as a repelling or attracting force and dissolve unprotected humans. With the Gingaoh Driver (ギンガオードライバー, Gingaō Doraibā) belt, the SOLU Switch (SOLU スイッチ, Soru Suitchi), and Kamen Rider Poseidon's future Core Medals, Kannagi can transform into Super Gingaoh. While transformed, he possesses chronokinesis, a hover pack, and the ability to convert his cape into a boomerang-shaped sword.
Lem Kannagi is portrayed by Toru Masuoka (益岡 徹, Masuoka Tōru).
Katal (カタル, Kataru) is one of Lem Kannagi's subordinates who can transform into a draconic Mutamit called Suddendath (サドンダス, Sadondasu) and appears exclusively in the crossover film Kamen Rider × Kamen Rider Fourze & OOO: Movie War Mega Max. While helping Kannagi achieve his goals, Katal fights Kamen Rider Fourze and the Kamen Rider Club before the former kills him.
Katal is portrayed by Dante Carver (ダンテ・カーヴァー, Dante Kāvā).
Solaris (ソラリス, Sorarisu) is one of Lem Kannagi's subordinates who was transformed into a Mutamit, possesses a Zodiarts Switch that allows her to transform into a copy of the Unicorn Zodiarts, and appears exclusively in the crossover film Kamen Rider × Kamen Rider Fourze & OOO: Movie War Mega Max. While helping Kannagi achieve his goals, she is defeated by Kamen Rider W.
Solaris is portrayed by Sanae Hitomi (人見 早苗, Hitomi Sanae).
Chancellor Kiima (キイマ総統官, Kiima-sōtōkan) is the superior of Lem Kannagi, who kills her after his plan to take over the world is exposed and he goes rogue.
Chancellor Kiima is portrayed by Azusa Watanabe (渡辺 梓, Watanabe Azusa).
The Space Ironmen Kyodain (宇宙鉄人キョーダイン, Uchū Tetsujin Kyōdain) are two of three Machine Organisms (機械生命体, Kikai Seimeitai) that Professor Blink created and infused with Cosmic Energy who first appear in the film Kamen Rider Fourze the Movie: Space, Here We Come! After attaining sentience and developing elitist personalities, they killed Blink and attempted to attack humanity, only for Blink and XVII to lock them in human forms and trap them on Earth. Despite this, the Kyodain utilize their human forms to create the front organization OSTO Legacy (オスト・レガシー, Osuto Regashī) and manipulate the Kamen Rider Club into helping them regain their full capabilities, only to be destroyed by Kamen Rider Fourze.
In the crossover film Kamen Rider × Super Sentai × Space Sheriff: Super Hero Taisen Z, new versions of the Kyodain join Space Shocker. However, their sense of honor and desire to fight Gavan lead to the pair being destroyed by Space Ikadevil for acting against Space Shocker's cause.
Groundain (グランダイン, Gurandain) is the blue-colored older brother figure who takes on the identity of Harumi Saeba (冴葉 晴海, Saeba Harumi), the general manager of OSTO Legacy. He is equipped with the chest-mounted Grounblaster X (グランブラスターX, Guranburasutā Ekkusu) cannon, has the ability to use his Cosmic Energy to summon Dustards like the Horoscopes, and can transform into a car-like form called the Grouncar (グランカー, Gurankā).
Groundain is voiced by Kohki Okada (岡田 浩暉, Okada Kōki), who also portrays Harumi Saeba.
Skydain (スカイダイン, Sukaidain) is the red-colored younger sister figure who takes on the identity of Shizuka Shirayama (白山 静, Shirayama Shizuka), Saeba's personal secretary. She is equipped with the twin arm-mounted Skycutter (スカイカッター, Sukaikattā) blades and can transform into a jet-like form called the Skyjet (スカイジェット, Sukaijetto), which allows her to fire Skymissiles (スカイミサイル, Sukaimisairu).
Skydain is voiced by Ayumi Kinoshita (木下 あゆ美, Kinoshita Ayumi), who also portrays Shizuka Shirayama.
Satellite Weapon XVII (衛星兵器XVII（エックスブイツー）, Eisei Heiki Ekkusu Bui Tsū) is a large satellite with the personality of Professor Blink capable of communicating with humans via the Brain (ブレイン, Burein) global computer terminal who first appears in the film Kamen Rider Fourze the Movie: Space, Here We Come!. After the Kyodain fatally injured Blink, XVII trapped the androids in human forms and sent them to Earth years prior. With help from Kamen Rider Fourze and the Kamen Rider Club, XVII combats the Kyodain when they resurface in the present before befriending Fourze and leaving to journey through space. In the crossover film, Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, XVII brings Nadeshiko Misaki back to Earth so she can aid Fourze and Kamen Rider Wizard in their fight against the Akumaizer.
XVII can transform from its satellite mode into a large humanoid robot mode called the One Seven Formation (ワンセブンフォーメーション, Wan Sebun Fōmēshon) and possesses Gunbase (ガンベース, Ganbēsu) drones, which serve as a defense mechanism.
XVII is voiced by Tsutomu Isobe (磯部 勉, Isobe Tsutomu).
The Alicia Federation (アリシア連邦, Arishia Renpō) is a mysterious organization that appear exclusively in the film Kamen Rider Fourze the Movie: Space, Here We Come!.
Professor Blink (ブリンク博士, Burinku-hakase) is an Alicia Federation scientist who created the Kyodain, who killed him after attaining sentience.
Professor Blink is portrayed by Ken Nishida (西田 健, Nishida Ken).
Inga Blink (インガ・ブリンク, Inga Burinku) is an Alicia Federation agent, a practitioner of the Seishin Dairin Fist, and daughter of Professor Blink partnered with Black Knight. In the film Kamen Rider Fourze the Movie: Space, Here We Come!, she attempts to stop the Kamen Rider Club upon discovering they are unknowingly aiding the Kyodain before joining forces with the club to defeat the androids. Five years later, as of the events of the film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, Inga has joined Interpol and became Ryusei Sakuta's partner.
Inga Blink is portrayed by Mikie Hara (原 幹恵, Hara Mikie).
Black Knight (ブラックナイト, Burakku Naito) is the third Machine Organism that Professor Blink created whose mental capacity, unlike the Kyodain, developed more slowly. As a result, Black Knight became a loyal member of the Alicia Federation partnered with Inga Blink. While helping her and the Kamen Rider Club stop the Kyodain in the present, Black Knight sacrifices itself to protect them.
In battle, Black Knight possesses armor that increases its defensive capabilities and wields the Blackest Reaper (ブラッケスト・リーパー, Burakkesuto Rīpā) rapier and a machine gun built into his chest.
Miyoko Ohki (大木 美代子, Ōki Miyoko), nicknamed Miyoppe (ミヨッペ), is a student at Amanogawa High and only member of the Space Kamen Rider Club who appears exclusively in the film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum.
Miyoko Ohki is portrayed by Rika Adachi (足立 梨花, Adachi Rika).
The Monster League (怪人同盟, Kaijin Dōmei) is a club composed of psychic youths who the Akumaizer and Kageto Banba used in their respective plots in 2012 and 2017 before the youths are rescued by Kamen Riders Wizard and Fourze, become the Youth League (少年同盟, Shōnen Dōmei) in 2017, and appear exclusively in the crossover film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum.
Saburo Kazeta (風田 三郎, Kazeta Saburō) is the leader of the Monster League whose psychic powers initially allow him to transform into a pupa-like mutant called Sanagiman (サナギマン) and makes his first appearance in the film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum. While attending AGHS in 2017, he allows Kageto Banba to assist him and the Monster League until Kazeta learns Banba is using a device called the Zeber (ゼーバー, Zēbā) to steal his psychic energy. Upon learning his mistake and receiving help from his teacher Gentaro Kisaragi, Kazeta finds the will to fight for justice and transforms into a blue moth-like mutant called Inazuman (イナズマン) to defeat Banba. Vowing to protect his fellow AGHS students, Kazeta reworks the Monster League into the Youth League. During the events of the film Kamen Rider × Super Sentai × Space Sheriff: Super Hero Taisen Z, a time distortion temporarily brings Kazeta to 2013, allowing him to join a past version of Kisaragi in fighting Space Shocker.
As Sanagiman, Kazeta possesses durable armor-like skin and superhuman strength. As the "Warrior of Freedom" (自由の戦士、, Jiyū no Senshi) Inazuman, Kazeta possesses the ability to fly and perform the Psychokinesis Chop (念力チョップ, Nenriki Choppu) and Lightning Typhoon (稲妻タイフーン, Inazuma Taifūn) attacks and the Super-Powered Inazuma Drop (超力イナズマ落とし, Chōriki Inazuma Otoshi) finisher.
Saburo Kazeta is portrayed by Kenta Suga (須賀 健太, Suga Kenta). As a child, Saburo is portrayed by Itsuki Shibuya (渋谷 樹生, Shibuya Itsuki).
Rumi Komaki (小牧 瑠美, Komaki Rumi) is a member of the Monster League nicknamed "Ruby" (ルビー, Rubī).
Rumi Komaki is portrayed by Kasumi Yamaya (山谷 花純, Yamaya Kasumi). As a child, Rumi is portrayed by Shiori Haga (芳賀 栞, Haga Shiori).
Daita Kondo (近藤 大太, Kondō Daita) is a member of the Monster League nicknamed "Kong" (コング, Kongu).
Daita Kondo is portrayed by Kazuyoshi Nakazawa (中澤 兼利, Nakazawa Kazuyoshi). As a child, Daita is portrayed by Taiga Sakamoto (坂本 大河, Sakamoto Taiga).
Chikao Nezu (根津 誓夫, Nezu Chikao) is a member of the Monster League nicknamed "Nezumi" (ネズミ).
Chikao Nezu is portrayed by Yuya Hara (原 勇弥, Hara Yūya). As a child, Chikao is portrayed by Hidetoshi Akutsu (阿久津 秀寿, Akutsu Hidetoshi).
Kageto Banba (番場 影人, Banba Kageto) is a man with psychic powers who created the Zeber device to store psychic energy, possesses a Zodiarts Switch that allows him to transform into the Hercules Zodiarts (ヘラクレス・ゾディアーツ, Herakuresu Zodiatsu), and appears exclusively in the film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum. He was previously involved in Mitsuaki Gamou's studies into Cosmic Energy before leaving in order to devote himself to the study of his psychic powers instead. Banba intends to use the Monster League in pursuit of his goals, but is defeated by Saburo Kazeta and arrested by Ryusei Sakuta, who destroys his Zodiarts Switch. Despite this, Banba is able to energize the Zeber and hand it off to the Akumaizer for their plans.
As the Hercules Zodiarts, Banba can conjure Dustards, possesses superhuman strength, and wields the Tyrant (タイラント, Tairanto) club.
Kageto Banba is portrayed by Toshiya Toyama (遠山 俊也, Toyama Toshiya).
"Tsubasa" (ツバサ) is a SOLU organism that split off from Nadeshiko Misaki and appears exclusively in the tie-in novel Kamen Rider Fourze: Ama High Grad-Uation. During Kamen Riders Fourze and Nadeshiko's fight with Kuniteru Emoto as the Virgo Zodiarts during the events of the film Kamen Rider × Kamen Rider Fourze & OOO: Movie War Mega Max, Tsubasa split off from Nadeshiko and secretly attached himself to Emoto. When Emoto traveled to the M-BUS to maintain his Tachibana identity, Tsubasa found the people that Emoto kept in suspended animation, including Sarina Sonoda. Tsubasa mimicked her appearance and took on a repressed split personality that she had developed based on her childhood friend Tsubasa Amano (天野 ツバサ, Amano Tsubasa), who was killed in an accident following an argument they had.
Following Emoto and Mitsuaki Gamou's deaths, Fourze transports the people on the M-BUS back to Earth and unknowingly brings Tsubasa with him. Upon arriving, Tsubasa utilizes the "memory of the Kamen Riders" and technology based on the Fourze and Meteor Drivers to create his own Rider system and become Kamen Rider Ikaros (仮面ライダーイカロス, Kamen Raidā Ikarosu), naming himself after a Japanese experimental rocket of the same name that Sonoda dreamed of riding. Tsubasa also turns Hiroki Makise back into the Pyxis Zodiarts and creates the Carina, Puppis, and Vela Zodiarts from problem AGHS students to gather energy from their despair before fusing the four Zodiarts into the Argo Zodiarts. After absorbing Sonoda and Yuki Jojima's dreams, Tsubasa transforms into Beast Ikaros (獣イカロス, Kemono Ikarosu) and overwhelms Fourze until the latter brings the alien to space and defeats him, turning Tsubasa back into his SOLU form. Before returning to space, Tsubasa expresses a desire to befriend Fourze upon his return.