List of Juken Sentai Gekiranger characters

This is a list of characters from the 2007–08 Super Sentai series "Juken Sentai Gekiranger". Each faction is a different school of the fictional martial arts known as .
Geki Jūken Beast Arts.
 is a fictional school of martial arts practiced by the protagonists. Those that practice Geki Jūken use a form of Qi within their bodies that manifests their passion for justice, called , as their power source. The ultimate form of Geki is the , which can manifest if the user mastered different aspects of the heart-technique-body triangle and selflessly has the intent to protect others at mind. The sporting goods company serves as a front for the martial arts school, specifically its Gekirangers. As of "Mashin Sentai Kiramager", SCRTC became Sena Hayami's athletics sponsor and supports CARAT in their fight against Yodonheim.
Gekirangers.
When transformed into the Gekirangers, the group says . When having transformed into the Super Gekirangers, the group says .
Jyan Kandou.
, the , is a beginner at the style, focusing on power and Hu Quan moves. He was the sole survivor of Long's attack on his village, blocking his memories of the incident and becoming a feral child raised by tigers in the forest outside the . Long had intended to kill Jyan due to his lineage, as the son of Dan, which enhances his sense of qi. Master Xia Fu began training Jyan as he personifies the of a Gekiranger: resistance to most forms of pain. His vocabulary is limited and he uses Jyan-ish phrases such as "niki-niki", "zowa-zowa", and "waki-waki", and has to learn about the "Heart". Jyan is eventually labeled as Rio's rival after witnessing the display of power used to stop his own attack. He becomes Sharkie Chan's first student of the sword-fighting style. Though Jyan possesses the , he is unable to fully use it in his first fight with Rio.
Jyan is criticized for practicing Geki Jūken to become stronger, a flawed ideology like Rio's, but he later realizes that his true reason to fight is to protect others. With this revelation, he is able to transform into the , . As Super Geki Red, he uses the style.
Jyan stops fighting after learning of his past with Rio and Dan, but with Xia Fu's help resumes his role as a Gekiranger, making an enemy out of Long. When Jyan regains his memories, he vows to make Long pay for his wrongdoings and beats sense into Rio. Rio then joins Jyan to save Mere and work together against their mutual enemy. After Long's defeat, Jyan invites both Rio and Mere to SCRTC, but is unable to convince Rio and Mere to not undertake the Fist Judgment to cleanse themselves of their sins. In memory of Rio, Jyan wears the Kenmas' Bracelet and vows to destroy Long.
During the final battle, after being infused with Maku's Rinki, the Gekirangers are taken to an astral Rin Jū Hall, where they are met by Rio and Mere. Jyan masters the style, unifying both Geki Jū and Rin Jū styles. With their newfound skills, the Gekirangers defeat Long, sealing him in a small ball, which Jyan keeps to ensure Long's power never falls into the wrong hands. He then leaves SCRTC to travel the world to find the next generation of Jūken fighters. While teaching the Beast Fist to children in Hong Kong, he runs into a boy who looks similar to Rio and decides to take him under his wing. Returning to Japan, Jyan is ambushed by Nuchaku Banki before he, Ran, and Retsu are trapped in the subspace before the Go-ongers come to their aid. After his new friends lost their engines, and being tricked into giving away the sealed Long, Jyan helps Sōsuke train and develop his own Firece Ki before Long is able to fully manifest. With the aid of a revived Rio, Long is defeated and Jyan reaffirms his vow with Rio to become stronger.
Jyan is portrayed by . As a child, he is portrayed by .
Ran Uzaki.
, the , is an employee of SCRTC and a artist, using a combination of Wing Chun speed and accuracy in her attacks. Ran comes from a high-class family that owns a gym, and to ensure her future her mother Reiko wished her to leave SCRTC when she came of age for marriage. Ran is initially reluctant because she does not think she is good enough to learn the Beast Arts. She relies more on will than technique when fighting, and always tries to do things the right way, being a fighter that gives the highest place. She excels in speed, but her reluctance to care for the small details make her "Technique" very poor. From learning Master Elehung Kam-Bo's meteor hammer techniques, Ran became more relaxed and happy in the process.
Ran competes with Michelle Peng in a skateboarding competition to improve her "Technique" to obtain Kageki. This training allows her to become the , . As Super Geki Yellow, she uses the style. Soon after, Ran is appointed as team captain of the Gekirangers by Xia Fu.
During the final battle, Ran is infused with Kata's Rinki, and is brought to an astral Rin Jū Hall to master the style to seal Long. Three months after Long's defeat, she is seen alongside Retsu teaching Jūken to young children at SCRTC.
Ran is portrayed by .
Retsu Fukami.
, the , is an employee of SCRTC and a practitioner, using Piguaquan martial-arts techniques. When he was a child his older brother Gou was killed, leaving him with a hatred for Rio who was said to be responsible. He set aside an artistic career to study the same fighting style as Gou, in order to move past his desire for revenge. Retsu is initially intelligent but selfish, does not take interest in others, and gives an impression of extreme coldness. He believes that winning should be like a painting, complete and inspirational. He sometimes mixes English loanwords in his speech. He learns of moving sensation of a trance when he masters Bat Li's style. He prioritizes in his training. His attention to beauty costs him stamina, making his "Body" his weakest point until he beats Bion Biao in an endurance match to obtain Kageki, and becomes the , . As Super Geki Blue, he uses the style.
During the final battle, Retsu is infused with Rageku's Rinki, and is brought to an astral Rin Jū Hall to master the style to seal Long. Three months after Long's defeat, he is seen alongside Ran teaching the Beast Fist to young children at SCRTC.
Retsu is portrayed by . As a child and a baby, he is portrayed by and .
Gou Fukami.
, the , is the fourth member of the team and a user, a student alongside Rio and Miki. He is also Retsu's protective older brother. After their parents died, they were taken in by a church. Gou forced Retsu to promise never to take on the Jūken, then went to face Rio. Gou used an imperfect form of the forbidden Geki Waza in an attempt to defeat and seal Rio, but it failed and Gou wandered for fifteen years in a werewolf form that he could not control.
Once regaining his human form, Gou was shocked at how much had changed and that Retsu was practising Geki Jūken. Though he is of the Geki Jūken, Gou lacks a passion for justice and fights only for himself. This resulted in Gou developing and mastering a dangerous form of Geki, called , and reinventing the Wolf-Ken as his personal , a form that uses Muay Thai fighting moves. Xia Fu believed that Gou actually does have a passion for justice, and commissioned the Gong Changer for Gou to use. After much soul searching and cajoling by the others, he agrees to become Geki Violet and overcomes the beast within him thanks to Bae. Using his Shigeki, Gou can summon Geki Tiger and Geki Jaguar and control GekiTohja Wolf on his own. Gou desires to defeat Rio and prove himself as his rival, holding some animosity towards Jyan in this regard, but accepts that he is not up to the task after mastering the strongest Geki Waza but still failing to defeat Rio. He is later glad when Rio joins the fight against Long.
During the final battle, Gou is among the other Geki Jūken warriors, including the Kensei, keeping Long at bay until Jyan, Ran, and Retsu return. After the battle is over, Gou sets upon his own journey with Bae to atone for his actions as a werewolf.
Gou is portrayed by .
Ken Hisatsu.
, the , is the fifth member of the team, colored white in a suit that resembles a karate uniform. He is a prodigy who trained at the Beast Origin Village and mastered one of the oldest fighting styles in the Beast Arts, the , to overcome the pain of losing his mother at a young age. Ken was originally to aid Ran and Retsu, but travelled abroad since his Geki Changer was broken. He also sold the SoZyuTo that Xia Fu gave him for travelling money. He is a free spirit, and does not restrict himself by talent or ties to the Geki Jūken. Ken can utilize the , a karate technique in which he condenses his Geki into a diamond blade on his hand with which can cut through anything. He eventually manifested Kageki on Christmas Eve out of his passion for the holidays. He frequently uses the word , which is karate term meaning "patience with myself and others". He also uses "kenzan", an archaic Japanese word that means "just arrived" and is also a pun on his name, Ken. Using the SoZyuTo, he can summon and control SaiDain/SaiDaiOh. "Hisatsu ken" can also translate as "hidden technique", which Ken has. After the final battle is over, Ken returns to work at SCRTC Meisters.
Ken is portrayed by .
Allies.
Miki Masaki.
 is head of SCRTC's special development department and responsible for designing most of the Gekiranger's weapons. She is an assistant to Xia Fu and also a student of Geki Jūken Beast Arts, mastering the style. She dislikes Elehung, despite his attraction to her. Before training in Geki Jūken, Miki was an infamous "sukeban" (female gangleader) in her youth and former leader of the Kanto Sukeban Alliance. She also knows and meets SGS' Morio Makino and Hant Jō from the Dino House she usually eats at.
Miki is portrayed by .
The Seven Kensei.
The are the legendary creators of the Geki Jūken style, originally under the wing of Brusa Ee. When three fellow students split away to found the Rin Jūken as Three Kenma, killing Brusa Ee, the two groups battled in the Geki-Rin Rebellion. This ended with the Kensei using a forbidden Geki Waza that sealed the Kenmas' bodies while forcing the seven Kensei into their animal forms. They swore a Jūken Oath of nonviolence soon after, fighting only in defense. Among them are the creators of the three Geki Jūken weapon styles that utilize one's heart and the meteor hammer, one's technique and the war fan, and one's body with sabers. Three others make up the , three Kensei who had each fully mastered one of the three major aspects of the Geki Jūken Beast Arts: Heart, Technique, and Body. The seventh Kensei, Xia Fu, mastered all three aspects of the Beast Arts and thus is the strongest of the Kensei. While it was Xia Fu who took the Gekirangers under his wing, the others have taught his students the weapon techniques of their styles and the path to obtain Kageki. Once every year, the Kensei would gather to have their annual , where they hone their skills while maintaining fair sportsmanship.
After the first Geki-Rin Rebellion, the Kensei created the that prevents those of the Rin Jūken school to enter the sacred grounds of Jūgenkyō. However, the barrier can be torn down by the SoZyuTo which fell into Rio's hands. Unable to stop him, the Kensei faced the Kenma once more, during which the Kenma use their Dōkokugan Ringi to seal all seven Kensei into a boulder with Maku taking their power as his own. Later, when Maku and the other Kenma are destroyed, their Ringi faded and the Kensei returned to normal. Each of the Kensei, save Xia Fu, were named after a prominent figure in martial arts movies, with their group name a pun on "sensei" (master).
Master Xia Fu.
 is a grand master of the style, having mastered all three of its aspects to channel Geki. He is the mentor of the Gekirangers and leader of the Kensei. He may have had a relationship with Rageku prior their transformations. Xia Fu turned down Brusa's offer to be his successor and suggested Maku, which wounded Maku's pride and ended their friendship. Xia Fu appears to be an aged anthropomorphic caracal with his eyes normally closed, opening them when he senses the Qi of the Akugata. He loves to be scratched on the neck, is referred to by Jyan as , and always carries a triangle with him. His motto is , as his training has the Gekirangers experience life lessons.
Xia Fu is voiced by .
Elehung Kam Po.
 is a legendary Kensei who is the plant manager of SCRTC Meisters and a grand master of the style that relies on a meteor hammer with playful antics. He is an anthropomorphic elephant and is somewhat perverted around women, earning him the nickname "Erohung" by Bae, yet is very fearful of "sukeban". Elehung was living on Shibe Mountain where, in the guise of a mononoke, he took the package the Gekirangers were to deliver to him in order to test them. Elehung chose Ran as his student so she can master the Geki Hammer, though his teaching methods cause difficulty. Elehung also possessed a 20 billion yen gem called the Raspberry Diamond. His motto is . His name is based on .
Elehung is voiced by .
Bat Li.
 is a legendary Kensei who is a grand master of the style that focuses on graceful and elegant techniques combined with artistic beauty, though it relies on being in a trance. He appears as an anthropomorphic bat in Barong attire. Stubborn and eccentric, he considers hanging upside down a great way to relieve stress. Though he initially refuses, Bat Li trains Retsu after witnessing his abilities first hand. He once saved a young girl named Hanyon, whom he promised to be with forever. However, he felt his presence put Hanyon in danger and left to master his Geki Jūken style; he reveals this to an elderly Hanyon so Ken can get the SoZyuTo back from her. His motto is . His name is based on .
Li is voiced by .
Sharkie Chan.
 is a legendary Kensei who is a grand master of the style that relies on a hard body and uses twin swords. He appears as an anthropomorphic great white shark and tends to cry when emotional. Sharkie Chan lives on the isolated Aozame Island, becoming its first sumo champ, until the Gekirangers arrive with Sharkie amazed by Jyan's skills in the "canoe race" test he set up. Jyan becomes Sharkie's first pupil, the two quickly forming a rapport. However Dokariya's interference and Geki Shark's sudden attack leaves Sharkie feeling unfit to train others, until his spirits are lifted when Jyan defends his honor and Xia Fu approves of him as a true mentor. Sharkie lost the Ikigimo in a tsunami and it came into the possession of a young celebrity named Alice. His name is based on .
Sharkie is voiced by .
Gorie Yen.
 represents the of the Master Triangle, and is a grand master of the style which uses powerful punches and climbing skills. He is an anthropomorphic gorilla with a reserved personality and love for bananas who was writing a novel in New York City when he was summoned to train the Gekirangers. Gorie is nicknamed the , due to his knowledge of the Dark Forest Path and running the Jūken Consultation Office deep within the woods. Gorie taught Jyan the meaning behind "Heart" in a coin-stacking match. He later is brutally attacked by Rio and forced to reveal the existence of Jūgenkyō. By the time his book is published, Gorie plays a part in unlocking Jyan's lost memories. During the events of "Go-onger vs. Gekiranger", it is revealed that Gorie had taught Jūken to Hiroto and Miu Suto. Gorie's name is based on .
Gorie is voiced by .
Michelle Peng.
 represents the of the Master Triangle, and is a grand master of the style that utilizes boardsport skills in battle. She is an anthropomorphic penguin, and though very sweet and bubbly in personality, Michelle is nicknamed the due to her scary temper. She is director of SCRTC's Sweden branch, when she receives the summons to train the Gekirangers. She teaches Ran to perfect her "Technique", and the subsequent skateboarding competition ends in a tie. Michelle is one of the few women not to mind Elehung's advances and works as Gorie's assistant at the Jūken Consultation Office, also entrusted with her mentor's strongest Geki Waza which she taught to Gou. Her name is based on .
Michelle is voiced by .
Bion Biao.
 represents the of the Master Triangle, and is a grand master of the style which uses many kicking attacks. He is an anthropomorphic gazelle who monitored a national park in Kenya until he was summoned to train the Gekirangers. He decides to teach Retsu to hone his "Body" in an endurance match. Biao is nicknamed the and his name is based on .
Bion is voiced by .
Natsume Masaki.
 is Miki's daughter, who attends elementary school with her friends Shinichi and Seiji. She helped the Gekiranger team by dancing along with them and teaching Jyan how to be patient with "Koto-Koto". She also helped Gou on his path to becoming a Gekiranger by showing him that he protected her from Mere when he could have fled. Jyan refers to her as Miki's child, a nickname she dislikes; when Gou referred to her as such she replied, "Don't call me by Jyan's weird nickname". She becomes one of Retsu's Beast Fist students in the finale. By the time of "Engine Sentai Go-onger vs. Gekiranger", she has mastered Geki Jūken. As of "Mashin Sentai Kiramager", an adult Natsume works as a subordinate of Miki in SCRTC's special development department and took on aspects of Jyan's personality.
Natsume is portrayed by .
Robo Tough.
 is a Jūken Trainer Droid. It is a robot that assists the Gekirangers in their Jūken training. It is programmed with three settings: beginner, expert, and cat mode in which it acts like a cat. In the finale, RoboTough is accidentally damaged by Mere.
Kentaro Hisatsu.
 is Ken's father and head of SCRTC's Special Items Development, , which is disguised as a backstreet factory run by the Hisatsu family.
Kentaro is portrayed by .
Sachiko Hisatsu.
 is Ken's younger sister. She is kidnapped by Mere to extort the SoZyuTo from Ken. Although she is Ken's younger sister, she speaks out to him when he begins arguing.
Sachiko is portrayed by .
Dan.
, a.k.a. , is a user of the style who was a star pupil under Xia Fu and a senior master of Rio, Gou, and Miki. Dan was able to access Geki with little effort, manifested as a . Despite being the senior, Rio saw Dan as a rival and tried to surpass him. When Rio defected, Dan tried to defeat Rio but was killed due to a previous injury from a sneak attack by Long. Dan told a frustrated Rio that their battle could be fulfilled through his son, Jyan. Though Dan's Geki Soul was used in the creation of Suugu, Dan is unable to manifest until Jyan awakens his memory. After receiving a fatal wound from Long meant for his son, Dan/Suugu has Jyan land the deathblow, freeing Dan from his prison. Before leaving to the next life, he tells his son to walk his own path. Dan's alias is a reference to the Chinese mythological beast .
Dan is portrayed by .
Brusa Ee.
 was the man who created the Jūken style, a master of the Geki Jū Rhinoceros-Ken style. He once battled Cosmic Kenpō Master Pachacamac in a 200-day battle, winning Pachacamac's two jewels that reveal the secret moves of Cosmic Kenpō. Later, Brusa taught ten students, who in time became the Kensei and the Kenma. Brusa hoped that Xia Fu would succeed him as Jūken master, but Xia Fu refused and recommended Maku as heir. Maku was enraged at this and with the other Kenma divided the school in the Geki-Rin Rebellion, murdering Brusa. Though dead, Brusa Ee's spirit, the Geki Soul, remained and later entered what Xia Fu carved into SaiDain. His motto is "Don't think, feel it", which Xia Fu, Ken and Jyan took to heart. When SaiDain's Beast Power Bloom empowered the Gekirangers, Mere, and Rio, it indicated that Brusa looks favorably on both forms of Jūken. Brusa Ee's name is based on .
Brusa is voiced by .
Geki Beasts.
The animal-themed mecha of the Gekirangers are called the . The personal Geki Beasts are aura projections of the Gekirangers' Geki, made physical through the "Twice-Twice Clone Fist" Geki Waza. But once one of them masters a certain fighting style, the Gekirangers could summon a Geki Beast modeled after their training with the "Come-Come Beast" Geki Waza. The Gekirangers can also use the to combine their Geki Beasts into humanoid forms.
GekiTohja.
 is the combination of the Gekirangers' primary Geki Beasts: Geki Red's , Geki Yellow's , and Geki Blue's . The primary attack of GekiTohja are using the tails of the three Geki Beasts as a three-section staff called . GekiTohja's finishing Geki Waza moves rely on its horizontal spinning.
Legendary Geki Beasts.
The are additional Geki Beasts, each unique to the Gekiranger as the result of their training. When the command is given, a Legendary Geki Beast becomes armor for GekiTohja and GekiFire.
GekiFire.
 is the form that the Super Gekirangers take from obtaining the "Kageki" power, the combination of the three : , , and
. GekiFire's finishing techniques rely on vertical spinning. Like GekiTohja, GekiFire can combine with the Legendary Geki Beasts.
Geki Wolf.
 is Geki Violet's Geki Beast. Like the Legendary Geki Beasts, Geki Wolf can be used in the Geki Waza Juken Armament, replacing Geki Cheetah in the GekiTohja formation or combining with Geki Tiger and Geki Jaguar to create GekiTohja Wolf.
SaiDain.
 is a giant rhinoceros construct. Xia Fu used the SoZyuTo sword to carve it from the large statue holding the of Brusa Ee. It has the ability of , empowering any pure Jūken user in its presence. Formed as a medium rather than a manifestation of Geki, SaiDain was originally in a petrified state at the Beast Origin Village, but can be brought to life by the ideal wielder of SoZyuTo. SaiDain can assume its true form, , by saying the or with the SoZyuTo. As SaiDaioh, it resembles a European knight, using the from the rhinoceros' horn and a shield from its back.
Geki Waza.
The various martial arts techniques that utilize Geki are known as . The Gekirangers use the various parts of their arsenal to channel the Geki into usable forms to perform Geki Waza.
These Geki Waza were described in promotional materials for the Geki Changer toy.
Tiger-Ken Geki Waza.
These Geki Waza are used by Geki Red and focus on the "Body" of the user.
Cheetah-Ken Geki Waza.
These Geki Waza are used by Geki Yellow and focus on the "Heart" of the user.
Jaguar-Ken Geki Waza.
These Geki Waza are used by Geki Blue and focus on the "Technique" of the user. Two variations of this style are and , which are influenced by the Zui Quan fighting style.
Wolf-Ken Geki Waza.
These Geki Waza are used by Geki Violet, enhanced by Gou's personal Muay Thai moves, called "Fukami-style" due to his Shigeki.
Rhinoceros-Ken Geki Waza.
An ancient Geki Waza of Brusa Ee that Ken/Geki Chopper mastered with his technique.
Elephant-Ken Geki Waza.
These Geki Waza are performed through meteor hammer techniques.
Bat-Ken Geki Waza.
These Geki Waza are performed through war fan techniques.
Shark-Ken Geki Waza.
These Geki Waza are performed through Geki Saber techniques in Twin Sword Mode.
Gorilla-Ken Geki Waza.
These Geki Waza are mainly used by Gorie Yen/Geki Gorilla and focus on the "Heart" of the user, mostly with punches.
Penguin-Ken Geki Waza.
These Geki Waza are performed by Geki Penguin through emulating boardsports and focus on "Technique".
Gazelle-Ken Geki Waza.
These Geki Waza focus on the "Body" and are mainly performed through Geki Gazelle.
Fly-Ken Geki Waza.
These Geki Waza are used by Bae and employ channeling Geki into his speaking and voice.
Geki Beast Geki Waza.
GekiTohja Geki Waza.
These Geki Waza are used by the combined form of GekiTohja.
Rin Jūken Akugata.
 is a fictional school of martial arts practiced by the antagonists, with an ideology of natural selection: that only those strong enough can survive the harsh and inhuman training. Rin Jūken practitioners use a form of Qi called , which is powered by the darkness in one's heart and is used to perform fighting techniques called Ringi. The ultimate form of Rinki is the , which manifests through infinite rage and a desire to destroy everything.
Rin Jū Hall.
The is a dojo and the primary location of the practitioners of Rin Jūken Akugata, on the remote Rin Jū Mountain. Previously under Maku's control, Rio took leadership and used many Rinsi and Rinrinsi as soldiers. It later became the base of the Gen Jūken until Rio and Mere left it, burning the base to the ground to remove any trace of the Rin Jū Fist from existence.
Rio.
 is the leader of the Rin Jūken style, the youngest to lead the Akugata, and a expert. Rio is able to assume the fighting form called , donning black and gold armor made of his own Rinki. His fighting style focuses on raw power. Rio's only interest is in gaining strength, so that he would not again have to suffer pain as he did when a monster murdered his family. While training under Xia Fu, Rio saw his senior Dan as a rival but was dissatisfied with his progress in the Beast Arts and turned to the Rin Jūken Akugata. Rio's closest friend Gou was unable to stop him; Rio mastered the Akugata and later battled Dan, only to learn that he was denied a true victory as Dan had been mortally wounded prior to their fight. Dan's dying words gives Rio a sense of a proper match to come from his "destined" rival: Jyan.
In the Rinjū Hall, Rio brought the Akugata's ancient warriors back from the dead, causing despair and sadness in humanity to gain power, and revived the Kenma Kata and Rageku. In the process, Rio learned to cultivate Rinki from his fear, hatred and jealousy. However, Rio is soon told by the two Kenma that the existence of Geki Jūken artists represent the limit of his power. Rio then, through a , swearing absolute loyalty to the Rin Jūken and the destruction of the Geki Jūken school, purged himself of all traces of the Beast Arts.
Rio easily defeats the Gekirangers but allows them to live and grow stronger that they might provide a proper challenge for him. Refusing to accept that the past still haunted him, Rio attempted to kill Retsu and Ran until Jyan defeats him as Super Geki Red. Wounded and enraged, Rio resurrects Maku to learn from him, but Maku overpowers Rio. Rio's self-hatred at this manifests into Dorinki, and he later disavows the Kenma and their wishes.
After SaiDain's Beast Power Bloom, Rio realizes that he and the others exposed to it had become stronger than Maku. He tells Geki Red to defeat Maku and end to the war between their mentors so that their own war may commence. Upon Maku's defeat, Rio resumes his place as leader of the Rinjū Hall. Long reveals himself and offers Rio greater power under Gen Jūken's guidance, and Rio later undergoes the Blood-Oath Ceremony, gaining a new fighting form, , that gives him mastery over the style. Rio spares Jyan again so he can grow stronger for their final confrontation, and when Rio is later defeated it allows him to awaken as the Destroyer, his mind corroded into a base desire to kill everything. He is restored by his feelings for Mere as she explains how Long used them. Long then abducts Mere, and Rio joins the Gekirangers to defeat Long and rescue Mere, renouncing his position as the Genjū King in the process.
After Long's defeat, Rio is invited to SCRTC along with Mere. However, Ran and Retsu are reluctant at this. Rio burns the Rinjū Hall to symbolize the end of the Rin Jūken branch, and takes on Retsu in the Fist Judgment to cleanse himself, with the intention to sacrifice himself. However, Sanyo and a revived Long interrupt the proceedings as Long assumes his true form. After Mere's selfless sacrifice, Rio takes a small remnant of her Ki into himself and decides to eliminate Long, despite Jyan's protests. As a final act, he gives the Gekirangers the last remaining Rinki that was given to him by the Kenma as penance for his deeds, and sacrifices himself in order to stop Long's rampage, promising Jyan a rematch in the future. Upon arriving in the afterlife, he is met by Mere and the two walk off, hand in hand. During the finale, both Rio and Mere guide the three Gekirangers into the Rin Jū Hall and reveal the Kenma before them, showing the path to unifying the two Jūken schools. Rio is later revived during the events of "Go-onger vs. Gekiranger", helping to defeat Long Banki before returning to the afterlife as a condemned soul as the price of his revival.
His name is a play on "leo", the Latin word for "lion".
Rio is portrayed by . As a child, he is portrayed by .
Mere.
 is a user of the style, which focuses on stealth and accurate attacks. She died during the Geki-Rin Rebellion. Due to their similar objectives, Rio revived her as a Rinrinsi 10 years before the start of the series, infusing her with his Rinki so that she became human-like. Mere is completely dedicated to Rio and has an unrequited love for him. She is also cruel and malevolent, and finds satisfaction in intimidating the weak. She possesses a powerful Beast-Man form, armed with two sais and a tongue weapon.
Rio places Mere in charge during his absence to revive Kata. Mere eventually began to distrust Kata and his methods, deciding to revive the other Kenma to save Rio. However, she becomes Rageku's disciple after he recognizes her strength is superior to Rio's. While trying to help Rio, she is repeatedly tricked by Long, and breaks her personal taboo about dishonesty. She accompanies Rio to Jūgenkyō, where her potential is unlocked due to SaiDain's Beast Power Bloom, despite being undead. She joins Rio in learning how to harness the power Gen Jūken offers, undergoing the Blood-Oath Ceremony which resulted in her being reborn as a Genshou with mastery over the style, which focuses on fire-based attacks.
Eventually, growing suspicious of Long's motives conflicting with Rio's, Mere investigates him to uncover his true agenda, and saves Rio from Long's scheme. Despite these efforts, Long manages to take Mere hostage and tortures her. She is rescued by the Gekirangers and Rio, who reciprocates her feelings. Seeing Rio purging the Genki from his body, she renounces her position as a Genshou and repays her debt to the Gekirangers by fighting Long. After Long's defeat, Mere and Rio were invited to live at SCRTC.
Mere and Rio decide to undergo the Fist Judgment to cleanse themselves of their sins. She faces Ran in the Fist Judgment, intending to end her life. Long's interference changed the scenario and she sacrifices her life to save the Gekirangers. During the finale, Mere, alongside Rio, guides the three Gekirangers inside an astral Rinjū Hall, revealing the Kenma before them and showing the path to unifying the two Jūken schools.
Mere is later revived during the events of "Go-onger vs. Gekiranger", risking her immortal soul to fight by Rio's side once more. During the events of "Uchu Sentai Kyuranger vs. Space Squad", Mere is revived by Demost using one of the Neo Kyutama that Hammie stole for him. While the space ninja altered her memories to make her obedient, Mere regained her memories of Rio as she befriended Hammie and sacrificed herself to protect Hammie from Demost after joining her and the Kyurangers. Mere tells Hammie to continue living, with only her Neo Kyutama remaining.
While a Genshou, her motif is the Vermilion Bird and the Rooster of the Earthly Branches. Her name is taken from the English word .
Mere is portrayed by .
Bae.
 is a practitioner of the style, which turns his vocalizations into Geki. He fought Mere during the time of the Geki-Rin Rebellion, but was swallowed by her after assuming an imperfect anthropomorphic fly form. When Rio brought Mere back to life, Bae was resurrected within her stomach, and is dependent on Mere to remain alive. When a battle between the Geki Beasts and a giant Beast-Man begins, he impulsively acts as a commentator for the battle, rooting for GekiTohja and GekiFire, until it ends and Mere eats him once again. He aggravates Mere by acting as her unwanted confidant, and is knowledgeable about the Beast Arts. He is accused of being a traitor by some of the Kensai although he gives his life to help Gou; Mere subsequently revives Bae because he was originally revived by Rio. Mere has a change of heart when Bae brings the Gekirangers to save her, and thereafter treats him as an equal. When Mere purged herself of Genki, what remained of it entered Bae, giving him a true life. After the final battle, Bae tags along with Gou as he sets upon his own journey. He ends up in India until he returns in the climax of "Go-Onger Vs. Gekiranger" to commentate on the giant battle against Long Banki. Xia Fu said that his motto is . His name is a play on the Japanese word for .
Bae is voiced by .
Rinsis.
The are the "jiangshi" (reanimated corpse) warriors revived when Rio performed the Ringi technique "Rinzai". The Rinsi are low-level users in the Akugata led by Mere. They use lances as weapons and wear masks formed by a hat and a blindfold. The mask is removed if a Rinsi is promoted through the , and an animal motif materializes on the forehead; the Rinsi then receives new attire and enters the rank of Rinrinsi who can briefly assume "Beast-Man" form. When they die, their bodies petrify and explode in blue flames. Maku sends their entire army against the Gekirangers, from which only one Rinsi survived. This finds the Raspberry Diamond for Mere, dons Butoka armor, but is destroyed by Ken before Mere can enable his full power. The Rinsi are later revived by Long as his personal army, using them to fight the Gekirangers. The Dropout Rinshi is voiced by .
The Three Kenma.
The are the opposing force to the Kensei, based at the on which the Rinjū Hall was built. They mastered the Beast-Man Wicked Body Change, with a high need for mass amounts of Rinki. The three who composed this group were, like the Kensei, students of Brusa Ee. But their pursuit of fear and rage as the ideal sources of power, combined with Maku's grudge against their mentor, led them to murder Brusa Ee and found the Akugata. Losing the Geki-Rin Rebellion, the Kenma were killed by the Kensei using the SoZyuTo after sacrificing their humanity in the process. Once their bodies were sealed away, their souls were each sealed within a ring of the created by the Kensei, which serves as a medium for the three to communicate with others at certain times.
Every 5,000 years, the Bracelet's power could be sealed at the sacred grounds of Jūgenkyō. Miki attempts this but Maki's interference allows the item to fall into Rio's possession. After obtaining the three final True Poison fangs from Braco, Rio resurrects Kata to train from him. Fearing Kata was a bad influence, Mere revived Rageku to replace him. Both Kata and Rageku see Rio and Mere as the ones to carry their legacy but Maku, whose resurrection was much harder to perform, takes over and declared a second Geki-Rin Rebellion with Rageku and Kata following him out of fear. All three are killed by Long's plan. However, when Jyan possesses the Kenma Bracelet, the three Kenma appear in their original human forms and aid the Gekirangers in mastering their fighting styles to defeat Long.
Kata.
 is a grand master of the , whose fighting style focuses on aerial martial arts and Genjutsu attacks on the opponent's psyche with a halberd named the . His power comes from hatred and malice. Rio revived Kata from a large stone tomb which Xia Fu sealed with a Geki barrier, located on a mountain summit beset with wind and lightning. Kata was impressed with this and Rio's ideals of power as absolute, and trains Rio to acquire Rinki from his malice and hatred, and to become the to lead the Rin Jū Hall.
Kata's motto is . His brutal training methods cause Mere to fear for Rio's well-being. When Rageku is resurrected, Kata agrees for her to take over Rio's training and waits at Rinjū Mountain. He and Rageku intend to celebrate Rio's victory over the Gekirangers by destroying the city, but sense Rio's defeat by Super Geki Red. When Rio revives Maku against Kata's warnings, Maku beats Katu and Rageku. During the burning of Jūgenkyō, Kata provokes the Gekirangers and Geki Violet into a fight, withstanding their strongest attacks, though Jyan overcomes his illusions; Kata then becomes enraged and enlarges to easily overcome GekiFire and GekiTohja Wolf, though he subsequently falls to SaiDaiOh's blade. In the finale, Kata's Rinki is transferred to Ran by Rio, who utilizes it to merge her own style with his, unifying both Jūken styles. While named after a , Kata's name plays on the Japanese word for 
Before entering battle, Kata says, .
Kata is voiced by .
Rageku.
 is a grand master of the , which allows physical attacks to pass harmlessly through the user. Her training is based on jealousy and envy, targeting Master Xia Fu, whom she refers to as as he spurned her romantic interests in the past. She addresses people of lower status using the informal suffix, as opposed to . Rageku is the second of the Kenma to be revived, with Mere's help, buried at the bottom of the sea. She instructs both Rio and Mere, teaching them to gain power from their envy. She and Kata intended to celebrate their student's victory over the Gekirangers by destroying the city, until they sensed Rio's defeat by Super Geki Red. When Rio then revives Maku, against Rageku's advice, Maku beats Rageku and Kata.
During the Jūgenkyō incident, Rageku uses her power to send the Gekirangers, Rio, and Mere back into the Edo era before incinerating the area in an attempt to destroy SaiDain. She later battled Geki Chopper and was nearly killed by him when he overcame her defenses. She is murdered by Long. Her Rinki is later transferred to Retsu by Rio, who utilizes it to merge her style with his own, unifying the two schools.
Before entering battle, Rageku says, .
Rageku is voiced by .
Maku.
 is a grand master of the , a style that focus on brute force. He attacks with a set of bear-like claws that extend from his wrists. Maku draws power from his own burning rage to give himself tremendous Dorinki, allowing him to reign over the Rin Jū Hall and transfer power into selected servants. He is acknowledged by the Kensei as the most powerful Jūken user. Maku was infuriated that he was made Brusa Ee's successor on the recommendation of Xia Fu, Brusa's first choice, rather than on his own merits, and ended his friendship with Xia Fu. After meeting Long, he founded the Akugata, murdered Brusa Ee, and started the Geki-Rin Rebellion with plans to become the Destroyer, the strongest being on Earth.
Maku was defeated in the rebellion and his body was placed behind a sealed door in Rinjū Hall. Rio breaks the seal and Mere obtains the to replace Maku's missing heart, allowing Rio to resurrect him. Maku expresses disgust with the changes that occurred while he was dead and overthrows Rio, resuming his role as leader and declaring a new Geki-Rin Rebellion. Maku refuses to teach Rio and goes to Jūgenkyō to kill him for insubordination. Maku becomes enraged by Rio's disrespect and the Kensei's criticisms, growing to giant form. He defeats GekiFire and, with the Kenma, seals all seven Kensei into a boulder, from which Maku siphons their power. Maku faces the Gekirangers again to demonstrate his superiority, but SaiDain's Beast Power Bloom had empowered the team to surpass him and is defeated by SaiDaiGekiFire. In the finale, his Rinki is transferred to Jyan, who uses it to merge both Geki Jūken and Rin Jūken styles and unify the two schools.
Maku is voiced by .
Beast-Men.
Performing the Ringi Beast-Man Wicked Body Change allows a fighter of the Akugata to turn into a , a fighting form that resembles their Rin Jūken style animal and makes full use of the style's Ringi. They are given names which end with the first kana of their beast's Japanese name.
Rinrinsi.
The are high-ranking Rinsi who passed the , with an animal signature forming on the forehead to indicate their fighting style. Rinrinsi can briefly achieve Beast-Man form with their own Rinsi, of indefinitely when empowered by Maku. Like the Rinsi, their bodies petrify and explode when killed.
Living Beast-Men.
Unlike their undead counterparts, the living Beast-Men have no Rinrinsi form. They are usually the strongest and oldest students of the Akugata and often the personal guard of their Kenma masters. They explode in crimson flames upon death.
Rinki Soldiers.
The are the Akugata's personal beetle-based Terracotta Army hidden within Rinjū Mountain. Two statues were brought to life by Rageku and Kata's Rinki to assist Rio's search for the Geki Jūken users, assuring no interference in his fights. They are the Super Gekirangers' first opponents. Maku later brought another set to life as red-armored versions called the . In episode 36, a Rinsi dons a Butoka as a suit of armor to obtain the Raspberry Diamond, and was later killed by SaiDaiOh.
Rin Beasts.
Similar to the Geki Beasts, the are created from the Rinki of Rio and Mere as they execute the Ringi . First appearing in the Gekiranger movie, and later in the series, the two can combine with GekiTohja to form , when the core Gekirangers, Rio, and Mere join forces and use the . Powered by both Geki and Rinki, GekiRinTohja uses the fighting style that combines both Jūken styles using the in Ougi attacks. A final combination of Geki Beasts and Rin Beasts is . During both of the Gekirangers teamups with the Boukenger and Go-Onger, another formation, , is introduced.
Ringi.
 are the Rin Jūken Akugata's counterpart to Geki Waza, the techniques of Geki Jūken Beast Arts, with various fighting styles to match. There are two Ringi that every Rinrinsi and Beast-Man has at their disposal.
Lion-Ken Ringi.
These Ringi are performed by Rio:
Chameleon-Ken Ringi.
These Ringi are performed by Mere:
Hawk-Ken Ringi.
These Ringi are performed by Kata:
Jelly-Ken Ringi.
These Ringi are performed by Rageku:
Bear-Ken Ringi.
These Ringi are performed by Maku:
Rinki Soldiers' Ringi.
These are used by the Butoka and Wagataku pairs. They combine their signature attacks to perform the and :
Gen Jūken.
 is a fictional group of martial artists who appear as antagonists. Utilizing a golden Qi known as , the Gen Jūken seek to exceed the power of natural beasts by mastering the power of mythical beasts. They have thirteen fighting styles based on the Chinese zodiac and the Four Sacred Beasts, represented by the . The Gen Jūken style is gradually revealed as a front for Long to raise Rio though the , turning him into a mindless monster who would destroy the world. All Gen Jūken users have a gold-colored fighting form.
Long.
The is the coordinator of Gen Jūken, its leader and the series antagonist. Although he calls himself a master of the , Long is not a human but an immortal known as the "Infinite Dragon", a many-headed golden dragon with terrible power who manipulates humanity on a whim. Because of his immortality and evil nature, Long found the world dull and decided to make it interesting by creating a Destroyer. This led to Long manipulating Maku, whom he trained to be the Destroyer while secretly aiding in the foundation of the Rin Jūken Akugata. But after the Kensei sealed Maku and the Kenma, Long was forced to wait until another pawn surfaced to replace Maku. Years later, Long found an ideal pawn in Rio, murdering the young boy's family and leaving him with a need to become strong to escape the memory of that moment. Long mortally wounded Dan years later before decimating the village where Jyan was born to insure no interference from Dan's family. Long then set up the Gen Jūken school, using the to convert some into his servants.
For most of the series, Long hid behind the scenes while overseeing Rio's training. Long would appear before Mere to guide her assistance or cause trouble for the Gekirangers while keeping his distance. Long gradually becomes more involved blocking Rio from moving too soon, corrupting Mere, and manipulating the Kenma. Long offers to train Rio and converts Rio and Mere in the Blood-Oath Ceremony. Mere's interference revealed Long's treachery and true identity, and he takes her hostage to force Rio into resuming his role in his master plan. However, when Rio and Mere defy him by discarding their Genki, Long decides to kill them and find someone else to become the Destroyer.
Though Long was apparently killed by SaiDaiGekiRinTohja, he reconstituted himself within Sanyo's body. With a new interest in the Jūken power, Long assumes his true form to attack Jyan before killing Mere and then overpowering GekiTohja Wolf and SaiDaiOh. Rio attempted to kill Long, who assumed his fighting form to overwhelm the Gekirangers before rampaging through the city. Gou, Ken and the Kensei hold Long at bay until the primary Gekirangers return, having mastered Rin Jūken, and seal Long into a small golden orb. The Dōkokugan sphere is later guarded by Jyan, who believes that blessing the Ringi on to former Jūken users will insure the seal remains intact for generations.
In "Engine Sentai Go-onger vs. Gekiranger", Meka uses the Engine Souls as hostages to force Jyan into giving him the sealed Long, converting him to the before installing it in Nunchaku Banki as part of his plan to rule the world with the dragon's power. But when Nunchaku Banki shut down, it is revealed the Dōkokugan's seal had been breached and Long partially emerged to enact his revenge on the Gekirangers. When revived Rio and Mere arrive, Long converts Nunchuck Banki into his vessel before his host was destroyed by the Engine Beast Grand Prix while the Dōkokugan is restored to normal. He returned in "", where he became a member of DaiZangyack. Long's name is based on "lóng" (), Mandarin for "dragon". His motifs are the Azure Dragon and the Dragon of the Earthly Branches, although his fighting form is gold-colored.
Long is played by .
Sanyo.
 is a master of the , using gravity-based attacks. He ends all his sentences with "ayo" and is constantly muttering. Long's right-hand man, Sanyo was created from Long's body. After Long entered Rio's service Sanyo drags in the large wooden coffin holding Suugu, unsuccessfully sending his apprentices to convince Rio of their power. His habit of blabbering hints of Long's true plans for Rio cause Mere to force him to reveal what he knows. He battles the Gekirangers to keep them from Mere and is defeated by her and Geki Blue, Yellow, Violet and Chopper. Surviving the battle because of his immortality, Sanyo serves his purpose to recreate Long but is reabsorbed by Long when he assumed his true form and full power. His name is based on Suān Yŭ () of the Shan Hai Jing, and his motifs are the Black Tortoise and the Snake of the Earthly Branches. Sanyo is voiced by .
Suugu.
 is a master of the , a style allowing him to use any Jūken technique from Geki Jūken and Rin Jūken. Suugu was made by Long from Dan's Geki soul, without his mind. Suugu was awakened by Long in the presence of Rio, who recognizes him as Dan; this led to Rio embracing the Gen Jūken. Although he is mindless, part of Dan seems to remain in Suugu, who plays a leaf ocarina. Long tricks Rio into ordering Suugu to kill Jyan. During this battle, Suguu's memories as Dan reawakened, allowing him to overcome the Blood Oath's effect and take the blow Long intended for Jyan. Mortally wounded, Suugu has Jyan deal the deathblow to release Dan's soul from his physical prison. His name is based on Sōu Yú () of the Shi Jing, and his motifs are the White Tiger and the Tiger of the Earthly Branches. Suugu is voiced by veteran Tokusatsu actor who also portrayed Dan.
Twin Gensi.
The are apprentices who support the Four Genshou:
Gengi.
 are the Gen Jūken's counterparts to Ringi.
Gryphon-Ken Gengi.
These Gengi are performed by Rio:
Dragon-Ken Gengi.
These Gengi are performed by Long, manifesting his Ki in non-violent ways:
Phoenix-Ken Gengi.
These Gengi are performed by Mere:
Basilisk-Ken Gengi.
These Gengi are performed by Sanyo:
Chimera-Ken Gengi.
Suugu's Gengi allows him to use both Geki Waza and Ringi: