List of Kamen Rider Blade characters

Kazuma Kenzaki (剣崎 一真, Kenzaki Kazuma) was chosen by the B.O.A.R.D. organization to use the sealed Category Ace of Spades (Change Beetle) to become Kamen Rider Blade. He has a good heart and believes in fighting to protect humanity. He would ultimately sacrifice his own human existence by mutating into the second Joker after excessive use of his Rider form's King Form transformation. This forces a stalemate in the Battle Fight while there is more than one Undead, keeping mankind safe while allowing his friend Hajime, the original Joker, to continue living among humans. Kazuma makes return appearances in Kamen Rider Decade and Kamen Rider Zi-O; the latter of which saw his humanity restored.

As the user of Rider System-02, developed by BOARD to enable a human to augment themselves with Undead DNA via the Rouse Cards, Kenzaki uses the Blay Buckle (ブレイバックル, Burei Bakkuru) in conjunction with the Change Beetle Rouse Card to become Blade. In his default form, Blade uses the Blay Rouzer (ブレイラウザー, Burei Rauzā) sword as both a weapon and a storage unit for Rouse Cards, including Proper Blanks. The Blay Rouzer's built-in 'rouzing' technology allows Blade to use an Undead's power in his attacks, using a combination of cards to execute a finishing attack.

Kenzaki later receives the Rouze Absorber (ラウズアブゾーバー, Rauzu Abuszōbā), a supplementary Rouse device developed by Kei Karasuma to bolster his capabilities by harnessing the Royal Club Undead. Using the Absorb Capricorn as a catalyst, Kenzaki uses the Fusion Eagle card to assume Jack Form (ジャックフォーム, Jakku Fōmu) with flight ability and the Blay Rouzer enhanced. After acquiring the Evolution Caucasus card, Kenzaki gains the ability to assume King Form (キングフォーム, Kingu Fōmu) with the King Rouzer (キングラウザー, Kingu Rauzā) broadsword. While assumed to only absorb the DNA of the Caucasus Undead, Kenzaki's Fusion Ratio was potent enough to assimilate his entire deck. With extended activity in this form, the subject's fusion coefficiency would raise exponentially, ultimately mutating the human being into a Joker-type Undead. To that end, use on Kenzaki's part, was strictly cautioned and advised only as a last resort.

Kazuma Kenzaki is portrayed by Takayuki Tsubaki (椿 隆之, Tsubaki Takayuki).

Sakuya Tachibana (橘 朔也, Tachibana Sakuya) was originally a researcher of BOARD's Humanity Foundation who graduated from the Sazahaibu University and was selected to be the user of Rider System 01, using the sealed Category Ace of Diamond (Change Stag) to become Kamen Rider Garren (仮面ライダーギャレン, Kamen Raidā Gyaren). From the beginning of the series, Tachibana begins to suffer a form of cellular breakdown, and only by sealing the Undead did the process slow down. Tachibana blames Karasuma for his condition, and the fact that Kenzaki was appointed as his backup rider in case he could not cope on his own did not improve his relationship with Karasuma. When he attempted to seal the Locust Undead before it attacked BOARD, Tachibana is forced to abduct Karasuma for answers prior to him going into a coma. However, it is only revealed later that the "Karasuma" he safeguarded was only a decoy as Tachibana learns that it is actually his subconscious fear that is causing the breakdown.

Tachibana encounters Isaka, the Peacock Undead, who recruits him by removing his fears with exposure to Schuld Kestner seaweed, an extinct plant that intensifies the aggressive nature of the subject. Though he became more aggressive and worked under Isaka for more of the seaweed, Tachibana was unaware of the eventual damage it would do to his nervous system. Though his dear friend Sayoko Fukasawa tries to warn him, Tachibana does not listen until he learns that Isaka murdered Sayoko for meddling in his affairs. Tachibana overcomes his fear while defeating the Peacock Undead and sealing him.

Later in the series, as restitution for being manipulated by an Undead, Tachibana takes Mutsuki under his wing, attempting to help him stay in control of the Spider Undead. During the final few episodes, Kamen Rider Garren came face to face with the Giraffa Undead and battled it out with him. Despite the Undead warning him the consequences of Hajime being the last Undead standing, thus making him champion of the Battle Fight, Garren insists on believing in his friend before the two fall off a cliff. The battle ended with Garren nowhere to be found and the King Undead sealed leaving the Joker as the winner. He is found upon the arrival of the Chief telling Kenzaki that he was saved because of him.

As the user of Rider System-01, the prototype of the Rider Sistem-02, Tachibana uses the Garren Buckle (ギャレンバックル, Gyaren Bakkuru) in conjunction with the Change Stag Rouse Card to become Garren. In his default form, Garren uses the Garren Rouzer (ギャレンラウザー, Gyaren Rauzā) firearm as both a weapon and a storage unit for Rouse Cards, including Proper Blanks. The Garren Rouzer's built-in 'rouzing' technology allows Garren to use an Undead's power in his attacks, using a combination of cards to execute a finishing attack. Tachibana later receives his own Rouze Absorber from Kei Karasuma to bolster his capabilities by harnessing the Royal Club Undead. Using the Absorb Serpent card as a catalyst, Kenzaki uses the Fusion Peacock card to assume Jack Form (ジャックフォーム, Jakku Fōmu) with flight ability and the Garren Rouzer enhanced

Sakuya Tachibana is portrayed by Kousei Amano (天野 浩成, Amano Kōsei).

Shiori Hirose (広瀬 栞, Hirose Shiori) is a 20-year-old lady who is one of the few remaining BOARD members after it was attacked by the released Undead, helping the Riders by detecting the Undead on her Undead-searching computer. She seems to care for Kenzaki very much.

Shiori Hirose is portrayed by Yumi Egawa (江川 有未, Egawa Yumi).

Kei Karasuma (烏丸 啓, Karasuma Kei) is the President of BOARD. A 48-year-old professor who created the Rider systems 01 and 02 (Garren and Blade), as well as the Leangle System (03), while he was under control of Isaka. During his travels, he befriends Noboru Shima, whom he entrusted the Rouze Absorbers to despite knowing he was an Undead. He is also aware of the side effect of Kenzaki's King Form as well as Tennoji's plans of the fake Battle Fight.

4 years in non-canonical movie after the series end he and Tachibana tried to cover 52 cards, when Albino Joker appeared and unsealed Undeads, who attacked and killed Karasuma.

Kei Karasuma is portrayed by Kazuhiro Yamaji (山路 和弘, Yamaji Kazuhiro).

Yoshito Hirose (広瀬 義人, Hirose Yoshito) is Shiori's father, the one responsible for breaking the Undead's seal in a fit of madness, dying in the process. He created the Trial-series Undead Trial B (トライアルB, Toraiaru Bī) in his image to protect Shiori, possessing all his creator's memories. However, Trial B was reprogrammed by Tennōji to continue to monitor the fixed Undead battle and remove potential threats before he sacrifices to protect Shiori from Trial G.

Yoshito Hirose is portrayed by Junichi Haruta (春田 純一, Haruta Jun'ichi).

Hiroshi Tennoji (天王路 博史, Ten'nōji Hiroshi) is the chairman of BOARD who intentionally set up the series of events in the fake Battle Fight and the creation of the Category Ace Kerberos, so that he could have his warped dream of a new world order with himself as its ruler. In the end, he was murdered by the Giraffa Undead after he was defeated by the Riders with his dreams shattered.

Hiroshi Tennoji is portrayed by Kohji Moritsugu (森次 晃嗣, Moritsugu Kōji).

Haruka Kurihara (栗原 遥香, Kurihara Haruka) is Kotaro's older sister and owner of the Jacaranda Cafe.

Haruka Kurihara is portrayed by Kaori Yamaguchi (山口 香緒里, Yamaguchi Kaori).

Amane Kurihara (栗原 天音, Kurihara Amane) is Haruka's 9-year-old daughter and Kotaro's niece. She is a rude girl who has feelings for Hajime, and is the reason he discovers what it means to be human. In the series ending, she reunites and lives with Hajime happily. An adult Amane returns during the events of Kamen Rider Zi-O as a worker as the Jacaranda Café before being turned into the Another Rider Another Blade (アナザーブレイド, Anazā Bureido) by the antagonists, turning Kenzaki and Hajime human before being defeated by the protagonists with all traces of the Joker essence she absorbed from the two Kamen Riders destroyed.

In the alternate continuity depicted in Missing Ace, a teenaged Amane became a delinquent as Hajime failed to keep his promise of returning. But after being targeted by the Albino Joker to power Jashin 14, she later realized that Hajime was watching over her in spirit and turned over a new leaf.

Amane Kurihara is portrayed by Hikari Kajiwara (梶原 ひかり, Kajiwara Hikari). As a teenager, Amane is portrayed by Miku Ishida (石田 未来, Ishida Miku).

Undead whose sealed cards are used by Kamen Rider Garren.

Bat Undead (バットアンデッド, Batto Andeddo)

The Eight of Diamonds Undead that Garren and Blade encounter at the start of the series during their third mission. Able to control bats, the Bat Undead overwhelmed Garren in a cave before Blade arrives to support him. Once he is blinded by sunlight, the Kamen Riders chased the Bat Undead across the cave to the darkest regions until his wings were clipped by the Garren Rouzer before being sealed by Garren into the Scope Bat card. Voiced by Tōru Ōmura (大村 亨, Ōmura Tōru)

Zebra Undead (ゼブラアンデッド, Zebura Andeddo)

The Nine of Diamonds Undead that can create clones of himself, attacking people at a shopping center until Garren and Blade forced him to retreat. The Undead is later telekinetically forced by Isaka into testing improved Garren, ending up being sealed into the Gemini Zebra card.

Pecker Undead (ペッカーアンデッド, Pekkā Andeddo)

The Four of Diamonds Undead that is sealed into the Rapid Pecker card.

Tortoise Undead (トータスアンデッド, Tōtasu Andeddo)

The Seven of Diamonds Undead who serves as the Serpent Undead's bodyguard to keep Blade and Garren from interfering in her affairs, only to be sealed into the Rock Tortoise card when Garren acquires his Jack form.

Isaka (伊坂) is the human form of the Jack of Diamonds Undead, the Peacock Undead (ピーコックアンデッド, Pīkokku Andeddo), and creator of the Leangle Buckle. He deceives Garren into working for him, until he killed Sayako for meddling in his affairs. His power in human form is telekinesis, as well as summoning fireballs and mass hypnosis; which he used to recruit humans to his aid in the creation of Leangle, with the Spider Undead's help in finding an ideal host for him to control. He was sealed by Garren.

Isaka is portrayed by Yasukaze Motomiya (本宮 泰風, Motomiya Yasukaze).

Azumi (あずみ) is the human form of the Queen of Diamonds Undead, the Serpent Undead (サーペントアンデッド, Sāpento Andeddo). She's a somewhat psychotic medusa-like monster that is hunting the Joker Undead, with the Tortoise Undead aiding her. Her hair changes to snakes and can be used as whips. She was wounded by Ryo Mikami, Hajime's look alike, and sealed by Chalice, who gives the sealed Absorb Serpent card to Garren so he could assume his own Jack Form.

Azumi is portrayed by Mio Fukuzumi (福澄 美緒, Fukuzumi Mio).

Kanai (金居) is the human form of the King of Diamonds Undead, the Giraffa Undead (ギラファアンデッド, Girafa Andeddo). He is the first Undead to learn the truth about the fake Battle Fight and the last Royal Club Undead to be sealed. He kills Tennōji, after using the Riders to fight for him, and steals the Kerberos card so he could gain the power to seal the Black Joker himself; blackmailing Hajime with the event of their fight becoming tied to the death of Amane's father to finish the fight. Despite being shot numerous times with the Garren Rouzer, he resisted being sealed until Garren grabbed him and both plunged off the cliff they battled on.

Kanai is portrayed by Akira Kubodera (窪寺 昭, Kubodera Akira).

Undead whose sealed cards are used by Kamen Rider Leangle.

Mole Undead (モールアンデッド, Mōru Andeddo)

The Three of Clubs Undead who attacked a subway, eventually attacking a mall which was reduced to rubble in the wake of his destruction. He eventually encounters Leangle, in his first fight without the Spider Undead influence over his mind, and is sealed by Blade into the Screw Mole card.

Jellyfish Undead (ジェリーフィッシュアンデッド, Jerīfisshu Andeddo)

Seven of Clubs Undead that can turns himself into a mass of liquid to electrocute people before Leangle uses Chalice's deck to execute his own Spinning Dance to seal the Undead into the Gel Jellyfish card.

Squid Undead (スキッドアンデッド, Sukiddo Andeddo)

The Nine of Clubs Undead that was sealed in the Smog Squid card, able to use the tentacles on his back to support his body and move rapidly over any terrain. While appearing in Hikaru's memory of first Battle Fight, the Squid Undead is unsealed during the events of Missing Ace.

The Ace of Clubs Undead who shoots webbing from his mouth to ensnare his victims to suck out their lifeforce, the Spider Undead (スパイダーアンデッド, Supaidā Andeddo) was an accomplice of Isaka who allowed himself to be sealed while using his golden spiders to select Mutsuki Kamijō as the Leangle system's user. Revealed to be partially sealed, the Spider Undead is able to possess Mutsuki and corrupt his mind, using the human to become more powerful throughout the Battle Fight until he no longer needs a human host. Spider is eventually forced out in physical when Mutsuki attempted to assume King form, his will overridden by Noboru Shima. The Spider Undead was properly resealed by Mutsuki with the King Rouser soon after.

Daichi (大地) is the human form of the Jack of Clubs Undead, the Elephant Undead (エレファントアンデッド, Erefanto Andeddo). Though he is pacifistic, he has enormous physical strength, which is also evident while he is human. He is usually found sunbathing near a pool; he wants to lie low until the Battle Fight is complete, thus becoming the winner by taking out the victor. He deems it pointless to fight an enemy unless he knew the limits of the opponent's ability. He was sealed by Blade Jack Form's Lightning Slash.

Daichi is portrayed by Kairi Narita (成田 浬, Narita Kairi).

Noboru Shima (嶋 昇, Shima Noboru) is the human form of the King of Clubs Undead, the Tarantula Undead (タランチュラアンデッド, Taranchura Andeddo). Shima is different from other Undead as he has a good heart and loves humanity, bringing the Rouze Absorber to Blade during his fight with the Elephant Undead. He helps Mutsuki remove the Spider Undead's influence by allowing himself to be sealed by Leangle's Blizzard Crush. It was only when the Tiger Undead sacrificed herself that Shima was able to finally lend his power to Mutsuki to help him defeat the Spider Undead.

Noboru Shima is portrayed by Kazunari Aizawa (相澤 一成, Aizawa Kazunari).

Hikaru Jō (城 光, Jō Hikaru) is the human form of the Queen of Clubs Undead, Tiger Undead (タイガーアンデッド, Taigā Andeddo), who has a great pride and fights with dignity. While in human form, she possesses uncanny speed and strength. After learning that the Battle Fight is fake, meaning she's fighting without purpose, she infiltrates BOARD, only to encounter Titan, learning of Hiroshi's intent, and attempting to hurt Nozomi out of rage. She asks Tachibana to borrow his Rouze Absorber, later fighting Leangle to have herself intentionally impaled on the Leangle Rouzer and taking the Proper Blank to seal herself. In Mutsuki's subconscious, she encourages him to continue to fight with both light and darkness.

Hikaru Jō is portrayed by Akane Hamasaki (浜崎 茜, Hamasaki Akane).

Undead whose sealed cards are used by Kamen Rider Chalice.

Mantis Undead (マンティスアンデッド, Mantisu Andeddo)

The Ace of Hearts Undead also known as "Chalice the Legendary", the Mantis Undead is the best fighter of all the Undead. He was sealed by Hajime prior to the series as the Change Mantis card which he uses to become Kamen Rider Chalice.

Human Undead (ヒューマンアンデッド, Hyūman Andeddo)

The Two of Hearts Undead and winner of the previous Battle Fight, able to communicate with humans via telepathy. After being unsealed, the Human Undead allowed Hajime to seal him into the Spirit Human card to influence the Joker's personality. He is portrayed by Ryoji Morimoto.

Plant Undead (プラントアンデッド, Puranto Andeddo)

The Seven of Hearts Undead that Kenzaki encountered after BOARD disbanded, first appearing at an observatory to strangle people. But due to the fact that Amane was there, Chalice arrives after the monster eludes Blade and goes after the girl. After Chalice leaves with Amane, the Plant Undead telepathically calls Chalice out before ambushing Blade while awaiting for his opponent's arrival. Once Chalice arrives, the Plant Undead is sealed within the Bio Plant card.

Moth Undead (モスアンデッド, Mosu Andeddo)

The Eight of Hearts Undead whose flammable powder is lethal to humans, calling out Hajime by burning the photos in his room. He manages to overwhelm Chalice until Blade arrives, with Chalice using the other rider as a distraction to target the Moth at his weak spot before sealing him into the Reflect Moth card.

Centipede Undead (センチピードアンデッド, Senchipīdo Andeddo)

The Ten of Hearts Undead that inflicted those near in the Echoing Cave with a fever-induced poison. Among his victims was Amane, who had to be quickly taken to the hospital. Learning of this, Hajime ran to get the antidote with Kenzaki following as Garren attempts to seal the Undead. While Blade is forced to hold Garren off, Chalice seals the Undead into the Shuffle Centipede card after slashing off the centipede sticking on the Undead's right shoulder so an antidote can be made.

Shell Undead (シェルアンデッド, Sheru Andeddo)

The Five of Hearts Undead that attacks Hajime while befriending Jin Ichinose near Hogoka. Though he ran from Chalice in the first fight, the Shell Undead causes a fire on Jin's boat before being sealed into the Drill Shell card.

Dragonfly Undead (ドラゴンフライアンデッド, Doragonfurai Andeddo)

The Four of Hearts Undead that can summon dragonflies and fly, calling out Hajime out after abducting Amane and Haruka. But the Undead is forced to retreat when Chalice overpowers him. The next time he attacks, the Dragonfly Undead is sealed by Chalice into the Float Dragonfly, which normally is used for aerial attacks. Chalice also used it as an alternate form when Takahara steals Hajime's Category Ace card for a while, letting Kenzaki borrowing it to use its flying ability to take the Change Mantis back.

Paradoxa Undead (パラドキサアンデッド, Paradokisa Andeddo)

The King of Hearts Undead that was sealed prior to the events of the series into the Evolution Card used by Chalice to assume his Wild Card form, an alternate version of the Undead appearing in an alternate dimension depicted in Kamen Rider Decade.

Miyuki Yoshinaga (吉永 みゆき, Yoshinaga Miyuki) is the human form of the Queen of Hearts Undead, the Orchid Undead (オーキッドアンデッド, Ōkiddo Andeddo), using others to get what she wants while using her vines to bind her victims. Kotaro, who has a crush on her, continues to befriend her despite what she has done to him and rescues her from Hajime. This resulted in her becoming unable to cope with human emotion. She was sealed by Chalice into the Absorb Orchid card.

Miyuki Yoshinaga is portrayed by Mika Hijii (肘井 美佳, Hijii Mika).

Shinmei (新名) is the human form of Jack of Hearts Undead, the Wolf Undead (ウルフアンデッド, Urufu Andeddo), later sealed into the Fusion Wolf card.

Shinmei is portrayed by Masashi Kagami (加々美 正史, Kagami Masashi).

Undead whose sealed cards are used by Kamen Rider Blade, the entire suit fused into his body whenever he assumes King Form.

Beetle Undead (ビートルアンデッド, Bītoru Andeddo)

The Ace of Spades Undead that was sealed into the Change Beetle card used by Kenzaki.

Lizard Undead (リザードアンデッド, Rizādo Andeddo)

The Two of Spades Undead that was sealed in the Slash Lizard card used by Blade. While appearing in Hikaru's memory of first Battle Fight, the Lizard Undead is unsealed during the events of Missing Ace.

Locust Undead (ローカストアンデッド, Rōkasuto Andeddo)

The Five of Spades Undead that is able to jump great heights and break his body into a swarm of locusts, attacking BOARD's headquarters with a majority of its members killed with Blade sealing him into the Kick Locust card.

Deer Undead (ディアーアンデッド, Diā Andeddo)

The Six of Spade Undead who possesses lightning powers, calling out Garren before he ends up fighting Blade and Garren with the former sealing him into the Thunder Deer card.

Trilobite Undead (トリロバイトアンデッド, Torirobaito Andeddo)

The Seven of Spades Undead that Isaka forced in serving his purpose of attacking the abducted Kenzaki in both acquiring data from the human's Fusion Rate as Blade to develop the Leangle System along with data on him, Blade, Chalice, and Garren. The Undead ends up being defeated by Blade and sealed into the Metal Trilobite card.

Jaguar Undead (ジャガーアンデッド, Jagā Andeddo)

The Nine of Spades Undead who uses his superspeed to maul his victims, evading Chalice when overpowered and intimidated by the Spider Undead into attacking Sayoko. Blade saves Sayako and manages to seal the Undead into the Mach Jaguar card.

Lion Undead (ライオンアンデッド, Raion Andeddo)

The Three of Spades Undead that Isaka recruits to kidnap the ideal candidates the Spider Undead identified for the Leangle project. While kidnapping Mutsuki, the Lion Undead confronts Blade and is forced to retreat. When the Lion Undead resumes his attack, he is sealed away by Blade within the Beat Lion card.

Boar Undead (ボアアンデッド, Boa Andeddo)

The Four of Spades Undead that was sealed into the Tackle Boar card Kenzaki uses, briefly unsealed by Leangle.

Buffalo Undead (バッファローアンデッド, Baffarō Andeddo)

The Eight of Spades Undead that is sealed into the Magnet Buffalo card.

Scarab Undead (スカラベアンデッド, Sukarabe Andeddo)

The Ten of Spade Undead who influences time and serves as King subordinate, Blade managing to seal him into the Time Scarab card after using a piece of cloth that the Scarab Undead had in his hand to keep himself unfrozen in time.

Yazawa (矢沢) is the human form of the Queen of Spades Undead, the Capricorn Undead (カプリコーンアンデッド, Kapurikōn Andeddo), despite being male. He teams up with Miyuki to get the Blay Buckle from Kenzaki, but fails when Chalice interferes with the battle. He possesses a high pitched scream which can obliterate anything, as the Centipede Undead challenged him to a fight. He was sealed by Blade.

Yazawa is portrayed by Atsushi Korechika (是近 敦之, Korechika Atsushi).

Takahara (高原) is the human form of the Jack of Spades Undead, the Eagle Undead (イーグルアンデッド, Īguru Andeddo). He made a pact with the Mantis Undead to fight as the two last Undead standing 10,000 years ago. In the present day, he misidentifies Hajime as the Mantis Undead (as he saw Hajime transform into Chalice). He took the Change Mantis card from him with the intention of avenging his comrade. He summons feathers, which he can use as throwing daggers. He was sealed by Blade.

Takahara is portrayed by Yasufumi Hayashi (林 泰文, Hayashi Yasufumi).

King (キング, Kingu) is the human form of the King of Spades Undead, the Caucasus Undead (コーカサスアンデッド, Kōkasasu Andeddo), who poses as a teenage boy with an annoying personality. He loves to cause trouble and mess with everybody. He also steals Hajime's Rouze Cards to push him back into his Joker form, giving the deck to Mutsuki in order to enjoy the resulting "mess". He uses telekinesis and can summon his shield by clapping his hands. Though he managed to take his deck from him, Blade managed to beat him and sealed Caucasus with the Blay Rouzer.

King is portrayed by Makoto Kamijo (上條 誠, Kamijō Makoto).

The Trial (トライアル) series are artificial Undead created by BOARD using technology and human DNA, lacking the immortality the Undead possess yet can absorb Proper Blanks instead of being sealed. The Trials were developed to interfere with the Undead Battle Fight.

Trial B (トライアルB, Toraiaru Bī, Boss)

A Trial that was infused with the DNA of Yoshito, who copied his memories into the Trial while programing him to protect Shiori. Though Trial B is reprogrammed by Tennoji to observe the fixed Undead battle while removing potential threats, he remembers his base programming and sacrifices himself to save Shiori from Trial G.

Trial D (トライアルD, Toraiaru Dī, Damned)

A Trial deployed to eliminate Kenzaki when he is a card away from attaining King Form, only to be destroyed once Kenaki achieve the form.

Trial E (トライアルE, Toraiaru Ī, Evolution)

A Trial created from Sakuya Tachibana's DNA and imprinted with his combat data as Garren, destroyed by Blade King Form's Royal Straight Flush. Another Trial E appeared in the Hyper Battle Video Blade vs. Blade, disguised as Kenzaki wearing a red scarf, it copied the Blay Buckle and transformed into Imitation Blade (偽ブレイド Nise Bureido). He fought the real Blade to a standstill with the clueless Tachibana and Mutsuki unable to tell the obvious difference. He was eventually defeated by Blade's Jack Form and King Form with the help of Leangle's Remote Tapir and Garren's Gemini Zebra.

Trial F (トライアルF, Toraiaru Efu, Fake)

A Trial created from the DNA of the Paradoxa Undead to capture Kenzaki before being destroyed by Wild Chalice's Wild Cyclone.

Trial G (トライアルG, Toraiaru Jī, Ghost)

A Trial imprinted with Leangle's combat data as Garren, overpowering both Hikaru Jō and the Kamen Riders. It was about to kill Shiori until Trial B intervened remembering the original programming his creator gave him. Destroyed by Wild Chalice's Wild Cyclone and Blade King Form's Royal Straight Flush.

Titan (ティターン, Titān) is an Undead that Tennoji created by merging the Scorpion and Chameleon Undead into one body with access to the former's poison and the latter's cloaking/disguise abilities with two buckles on its belt. Titan is deployed to turn the Kamen Riders on each other before they trick the Undead into revealing itself and sealed it back into two cards.

Titan is voiced by Katsumi Shiono and Chika Kobayashi (小林 知佳, Kobayashi Chika).

Kerberos (ケルベロス, Keruberosu) is an Undead that Tennoji made from the DNA of all 53 Undead to surpass the Joker in power, created as the fifth Ace that Tennoji intended to be the victor of the Battle Fight he set up. But Keroberos was beyond Tennoji's control, killing his entire staff upon being born from the Stone of Sealing. The Undead succeeded in absorbing the decks of Chalice and Leangle, along with Jack and Queen cards of Garren. Kerberos even overpowered Blade King Form at first, but was defeated by Royal Straight Flush with Tennoji using the Change Keroberos on herself to become Keroberos II before Kanai takes it. While the card is lost in the series finale, Change Keroberos was recovered and used by Kamen Rider Glaive in the alternate events of Missing Ace, with two copies of the card used in creating Riders Lance and Larc.

Kerberos is voiced by Katsumi Shiono.

The Darkroaches (ダークローチ, Dākurōchi) are cockroach-like Undead grunts that are extensions of the Stone of Sealing which manifest once Hajime is the sole remaining Undead in the Battle Fight with their only purpose is to wipe out all life on Earth, able to respawn from the monolith after being destroyed. Once Kenzaki became the second Joker Undead, the Darkroaches vanished since Battle Fight was put into stalemate. The Darkroaches resurface in 2019 during the events of Kamen Ride Zi-O when Amane becomes the world's only Joker after extracting the Undead essence from Kenzaki and Hajime into herself, only to be permanently destroyed once the Joker essence is completely eradicated.

Sayoko Fukasawa (深沢 小夜子, Fukasawa Sayoko) is Tachibana's girlfriend from college. Being a nurse, her office was open to Tachibana whenever he needed to rest. She attempted to help him before she was killed by Isaka/Peacock Undead for her interference in his plan. Because of her death, Tachibana's fear ceased, and she was avenged when he sealed Isaka.

Sayoko Fukasawa is portrayed by Urara Awata (粟田 麗, Awata Urara).

Jin Ichinose (一之瀬 仁, Ichinose Jin) is a young street musician who befriended Hajime after the latter had left Amane for personal reasons. Jin is a prodigal son of a prominent composer who wants him to become a musician like his older brother. But Jin, being a misanthrope, wants to be independent and away from mankind on the boat he worked hard to get and ready. After seeing Hajime turn into Chalice, Jin eventually severed his ties with Hajime after his battle with the Shell Undead resulted with Jin's boat being burned down, killing the young man's dream.

Jin Ichinose is portrayed by Sora Touma (藤間 宇宙, Tōma Sora).

Go Kiryu (桐生 豪, Kiryū Gō) is a former member of BOARD which was supposed to be the first user of Garren, but was incompatible. Kiryu had a warped sense of justice, using his prosthetic hand to electrocute petty crooks. Eventually, upon the discovery of Leangle, he briefly used the Leangle belt, recognized by the Spider Undead as a more suitable vessel out of like-mindedness. But once defeated, Spider Undead abandoned Kiryu for Mutsuki as the Locust, Deer and Jaguar Undeads mauled Kiryu on command.

Go Kiryu is portrayed by Nozomu Masuzawa (増沢 望, Masuzawa Nozomu).

Rei Kamioka (神丘 令, Kamioka Rei) is a photographer who is a close friend of the Kurihara Family who employs Hajime as an apprentice. When she examined the picture of the place where Amane's father had died, she found out that Hajime is in the picture. She at first thought that Hajime killed Mr. Kurihara but later realized his innocence. She also saw Hajime transform into Chalice, who saved her when she was under attack by the Eagle Undead.

Rei Kaimioka is portrayed by Touko Fujita (藤田 瞳子, Fujita Tōko).

Tatsuya Yamaguchi (山口 辰也, Yamaguchi Tatsuya) is a motorcycle racer who aids the Riders to stop the Wolf Undead, but attempting to block off the creature so the Riders could catch up with it.

Tatsuya Yamaguchi portrays himself.

Ryo Mikami (三上 了, Mikami Ryō) is an exact look-alike of Hajime, who makes takoyaki as a member of the Iroha clan, having a forbidden romance with Michi. Fed up with his life, he swapped identities with an amnesiac Hajime. However, he returns to reclaim his place, fighting as Taiyaki Master Ultimate Form (タイヤキ名人アルティメットフォーム, Taiyaki Meijin Arutimetto Fōmu), which was a training suit used by the Hoheta Clan, aiding Hajime in fighting the Serpent Undead. He also has a switch on his suit which is called the Ultimate Form Special Turbo (アルティメットフォームスペシャルターボ, Arutimetto Fōmu Supesharu Tābo) which lights up a fish and allows him to move faster.

Ryoji Morimoto, who already portrays Hajime Aikawa, also portrays Ryo Mikami.

Michi (未知) is Ryo's girlfriend. Although she is a daughter of the Iroha's taiyaki-making rival clan, the Hoheto clan, she also makes takoyaki and supports Ryo. When Ryo and Hajime changed their identities for a while, she discovers that her boyfriend (actually an amnesiac Hajime) has hidden abilities, and eventually fell in love with him for a second time. Through Hajime, she made the two rival clans reconcile with each other. In the end, she and Ryo were married after they discovered that Ryo and Hajime were two different people.

Michi is portrayed by Michie Kitaura (北浦 実千枝, Kitaura Michie).

Umi Ikuhara (生原 羽美, Ikuhara Umi) is a young girl whose parents and brother died in an earthquake, she saw Kenzaki transform into Blade. She made a lot of trouble to Kenzaki, because she wants Kenzaki to be her "superhero." Through Kenzaki, she learned the true meaning of protecting people, since she believes that no one will protect her.

Umi Ikuhara is portrayed by Megumi Shoji (東海林 愛美, Shōji Megumi).