List of Kamen Rider Decade characters in the New Worlds

The World of Negatives' version of Otoya Kurenai (紅 音也, Kurenai Otoya) is a young man who leads the Dark Riders, using his connection to Kivat-bat the 2nd to become Kamen Rider Dark Kiva (仮面ライダーダークキバ, Kamen Raidā Dāku Kiba). Revealing himself to Tsukasa while thanking him for saving their world, Otoya has an agenda to have Tsukasa become the king of the World of Negatives, testing him personally to confirm it.[3][4] But his plan fails as Tsukasa refuses and defeats his allies, leaving Otoya as the only surviving Dark Rider.[5][6]

This version of Otoya Kurenai is portrayed by Kouhei Takeda (武田 航平, Takeda Kōhei), who previously portrayed the character of the same name from Kamen Rider Kiva.

The World of Negatives' Natsumi (ネガの世界の夏海, Nega no Sekai no Natsumi) is the World of Negatives counterpart of the real Natsumi Hikari and one of the few remaining humans in the World of Negatives. She confronts her counterpart in an attempt to warn her of Otoya's scheme, only to be forced to dig up the K-Touch she had hidden. She eventually gives her goodbyes to Natsumi while entrusting the K-Touch to Tsukasa, remaining in her world out of hope for the future.[5][6]

Kanna Mori portrays the World of Negatives's Natsumi alongside her primary role as Natsumi Hikari.

Kamen Rider Ryuga (仮面ライダーリュウガ, Kamen Raidā Ryūga) is a Dark Rider who murdered and assumed the guise of the World of Negatives counterpart of Hirohiko Sato (佐藤 博彦, Satō Hirohiko), Natsumi's TG Club high school classmate. He is destroyed by Decade Complete Form with aid from Ryuki Survive.[3][4][5][6]

Ryuga and Hirohiko Sato are portrayed by Takatsugu Iwama (岩間 天嗣, Iwama Takatsugu).

Kamen Rider Orga (仮面ライダーオーガ, Kamen Raidā Ōga) is a Dark Rider who murdered and assumed the guise of the World of Negatives counterpart of Kenji Sakata (坂田 健児, Sakata Kenji), Natsumi's TG Club high school classmate. He is destroyed by Decade Complete Form with aid from Faiz Blaster Form.[3][4][5][6]

Orga and Kenji Sakata are portrayed by Keisuke Sakamoto (坂本 恵介, Sakamoto Keisuke).

Kamen Rider Dark Kabuto (仮面ライダーダークカブト, Kamen Raidā Dāku Kabuto) is a Dark Rider who murdered and assumed the guise of the World of Negatives counterpart of Kazuyoshi Aoyagi (青柳 和良, Aoyagi Kazuyoshi), Natsumi's TG Club high school classmate. He is destroyed by Decade Complete Form with aid from Kabuto Hyper Form.[3][4][5][6]

Dark Kabuto and Kazuyoshi Aoyagi are portrayed by Yohta Mori (森 陽太, Mori Yōta).

Pseudo-Rider Alternative (疑似ライダーオルタナティブ, Giji Raidā Orutanatibu) is a Dark Rider who assumed the guise of the World of Negatives counterpart of Tanaka (田中), Natsumi's high school teacher. Though ordered by Otoya to keep an eye on Natsumi rather than kill her, he intentionally decides to attack Natsumi, resulting in Dark Kiva beating him merciless. Alternative is then later destroyed by Diend.[3][4][5][6] Although referred to as Alternative, the suit is actually that of Alternative Zero (オルタナティブ・ゼロ, Orutanatibu Zero).

Alternative and Tanaka are portrayed by Masayasu Kitayama (北山 雅康, Kitayama Masayasu).

Chinatsu (千夏) is Natsumi's high school friend who was the president of the student council. Her World of Negatives counterpart died giving her Natsumi the K-Touch which she stole from the Dark Riders.[3][4][5][6]

Chinatsu is portrayed by Juri Ihata (井端 珠里, Ihata Juri).

Raydragoons (レイドラグーン, Reidoragūn) are Dragonfly Mirror Monsters that live in the World of Negatives as Otoya's minions, taking the guise of normal humans. They are destroyed by Diend.[3][4][5][6]

Junichi Kaito (海東 純一, Kaitō Jun'ichi) is Daiki's older brother within his home world. Like Daiki, Junichi is also a Kamen Rider, Kamen Rider Glaive (仮面ライダーグレイブ, Kamen Raidā Gureibu), setting up the operation to overthrow Fourteen. However, Junichi was actually a double agent who worked to flush out the last two Kamen Riders of their world until Daiki unknowingly captured him, and as a result, played the role as Fourteen's puppet right hand in charge of the area management committee. However, once Fourteen is destroyed, freeing everyone else from the brainwashing, Junichi reveals the truth with intent to be the next Fourteen. In spite of not being able to kill Daiki, with Tsukasa affirming he still has his free will, Junichi considers his brother dead to him and leaves.[7][8][9][10]

Junichi Kaito is portrayed by Yuuki Kuroda (黒田 勇樹, Kuroda Yūki). Kuroda having previously portrayed a similar character Junichi Shumra in the film Kamen Rider Blade: Missing Ace.

Haruka Miwa (三輪 春香, Miwa Haruka) is a young woman who resists Fourteen as Kamen Rider Larc (仮面ライダーラルク, Kamen Raidā Raruku). She took part in the operation to overthrow Fourteen and ended up escaping with Shin when the operation was a failure. Since then, she has been on the run from Fourteen's minions. She helps fill Tsukasa in on what is currently happening in her world.[7][8]

Haruka Miwa is portrayed by Yoko Mitsuya (三津谷 葉子, Mitsuya Yōko). Mitsuya having previously portrayed a similar character Natsumi Miwa in the film Kamen Rider Blade: Missing Ace.

Shin Magaki (禍木 慎, Magaki Shin) is a hot-blooded young man who resists Fourteen as Kamen Rider Lance (仮面ライダーランス, Kamen Raidā Ransu). After the operation to overthrow Fourteen failed due to Daiki's efforts, he escaped with Haruka. He holds a grudge against Daiki for selling out his older brother but eventually forgives him.[7][8]

Shin Magaki is portrayed by Takao Sugiura (杉浦 太雄, Sugiura Takao). Sugiura having previously portrayed a similar character of the same name in Kamen Rider Blade: Missing Ace.

Jashin 14 (邪神14, Jashin Fōtīn) is leader of the Roaches and ruler of this world, assuming the human-like form of Fourteen (フォーティーン, Fōtīn) for his "ideal peace", turning humans into mindless slaves. He is a massive creature with multiple arms that floats through the air. He is destroyed by Decade in Complete Form with aid from Armed Hibiki, cutting him in half. After his demise, the Roaches vanish and everyone he'd brainwashed were set free.[7][8][9][10]

Fourteen is portrayed by Takashi Ito (伊藤 高史, Itō Takashi).

Bossroach (ボスローチ, Bosurōchi) is one of the Roach enforcers who watch over the human race, whom he sees to be inferior. Bossroach resembles the Caucasus Undead. Bossroach is then destroyed by Decade Complete Form using Kiva Emperor Form's power.[7][8]

Darkroaches (ダークローチ, Dākurōchi) are Category Unknown Undead who are minions of Fourteen, going after any one who breaks the law. Many of them are killed by the Riders and when their master is destroyed by Decade and Armed Hibiki, the Darkroaches fade away into nothingness.

The Shinkengers (シンケンジャー, Shinkenjā) are six young men and women who use a special kanji-based power called Modikara (モヂカラ, Mojikara) to combat the evil Gedoushu as superpowered samurai. They consist of the Shiba Household lord Shinken Red, Takeru Shiba, and his vassals: Shinken Blue, Ryunosuke Ikenami; Shinken Pink, Mako Shiraishi; Shinken Green, Chiaki Tani; Shinken Yellow, Kotoha Hanaori; and Shinken Gold, Genta Umemori. They are accompanied by the Shiba Household's retainer Hikoma Kusakabe and many kuroko.

Tori Matsuzaka (松坂 桃李, Matsuzaka Tōri), Hiroki Aiba (相葉 弘樹, Aiba Hiroki), Rin Takanashi (高梨 臨, Takanashi Rin), Shogo Suzuki (鈴木 勝吾, Suzuki Shōgo), Suzuka Morita (森田 涼花, Morita Suzuka), Keisuke Sohma (相馬 圭祐, Sōma Keisuke), and Goro Ibuki (伊吹 吾郎, Ibuki Gorō), reprises their roles as Takeru Shiba, Ryunosuke Ikenami, Mako Shiraishi, Chiaki Tani, Kotoha Hanaori, Genta Uemori, and Hikoma Kusakabe respectively.

The Gedoushu (外道衆, Gedōshū) are malevolent spirits that dwell in the Sanzu River. They enter the mortal world through gaps to inflict terror on the humans to allow the river to flood over both worlds. Their leading members live aboard the Rokumon Junk (六門船, Rokumonsen) and consist of Doukoku Chimatsuri, Tayu Usukawa and Shitari of the Bones. Under their control are the Ayakashi (アヤカシ) who enter the mortal world, assisted by the Nanashi Company.

Chō (チョー) reprises his voice role as Shitari of the Bones.

Chinomanako (チノマナコ, [Note 1]) is an Ayakashi that steals the DienDriver and is able to become Chinomanako Diend (チノマナコ・ディエンド変身態, Chinomanako Diendo Henshintai), the World of Shinkengers' first native Kamen Rider and thus a living distortion that threatens the world. Like Diend, Chinomanako Diend is armed with Kamen Ride Cards as well as Kaijin Ride Cards that allow him to summon the Moose Fangire and the Eagle Undead. He also summons Kamen Rider Blade, which brings to his downfall as Decade uses the Blade Final Form Ride card to turn him into Blade Blade, which Shinken Red wields. While Shinken Pink, Shinken Green and Shinken Gold defeat the Moose Fangire and Shinken Blue, Shinken Yellow and Kamen Rider Kuuga defeat the Eagle Undead, Chinomanako is destroyed by the teamwork of Decade Complete Form and Shinken Red, after being weakened by a combo Royal Straight Flush attack with Blade King Form. As with other Ayakashi being the basis of monsters from Japanese mythology, Chinomanako is the basis of the Mokumokuren (目目連).[11][12]

Chinomanako is voiced by Ryūzaburō Ōtomo (大友 龍三郎, Ōtomo Ryūzaburō).

Kotaro Minami (南 光太郎, Minami Kōtarō) is a man who fights the Crisis Empire as Kamen Rider Black RX (仮面ライダーBLACK RX（ブラック アールエックス）, Kamen Raidā Burakku Āru Ekkusu), able to become either Robo Rider (ロボライダー, Robo Raidā), or Bio Rider (バイオライダー, Baio Raidā). However, with Dai-Shocker appearing in his world, he finds himself outmatched by the new monsters while searching for his friend Joe the Haze.[17][18] Natsumi convinces him that Tsukasa is not the Destroyer of Worlds that he heard about. Though he eventually learns of Joe's fate, Kotaro is not saddened as his friend would be with him in spirit.

Tetsuo Kurata (倉田 てつを, Kurata Tetsuo) portrays the role of Kotaro Minami in the character's World of Black RX incarnation.

Schwarian (シュバリアン, Shubarian) is a Strange Demon Robot from the Crisis Empire, seeing himself as the ultimate machine in his branch. He originally turned down Apollo Geist's offer to join Dai-Shocker until he sees his power first hand.[17][18] He is destroyed by Decade Complete Form with the aid of Agito Shining Form.

Schwarian is voiced by Tetsu Inada (稲田 徹, Inada Tetsu).

Chaps (チャップ, Chappu) are the Crisis Empire's foot soldiers.

With Apollo Geist, several kaijin members of Dai-Shocker appear in the World of RX.

• Scorpion Imagin (スコーピオンイマジン, Sukōpion Imajin): An Imagin who accompanies Apollo Geist. Destroyed by Decade using Faiz Axel's power.
• Seamoon Fangire (シームーンファンガイア, Sīmūn Fangaia): A Fangire who accompanies Apollo Geist. Destroyed by Decade using Agito's Rider Kick.
• Mantis Fangire (マンティスファンガイア, Mantisu Fangai): A Fangire who accompanies Apollo Geist. Destroyed by Decade using Faiz Axel's power.
• Rhinoceros Mutant (サイ怪人, Sai Kaijin): A mutant of Gorgom. Summoned by Apollo Geist to convince Schwarian to join Dai-Shocker. He is summoned again to help protect Apollo Geist from Black RX, only to be quickly destroyed by Black's Rider Punch.
• Ox Orphnoch (オックスオルフェノク, Okkusu Orufenoku): An Orphnoch. Destroyed by Diend.
• Worm Orphnoch (ワームオルフェノク, Wāmu Orufenoku): An Orphnoch. Destroyed by Diend.
• Frilled Lizard Orphnoch (フリルドリザードオルフェノク, Furirudo Rizādo Orufenoku): An Orphnoch. Destroyed by Diend.
• Brachypelma Worm Aurantium (ブラキペルマワーム・オーランタム, Burakiperuma Wāmu Ōrantamu): A tarantula Worm.
• Brachypelma Worm Viridis (ブラキペルマワーム・ビリディス, Burakiperuma Wāmu Biridisu): A tarantula Worm.
• Tarantes Worm Purpura (タランテスワーム・パープラ, Tarantesu Wāmu Pāpura): A tarantula Worm.

The World of Black's Kotaro Minami fights the Gorgom as Kamen Rider Black (仮面ライダーBLACK（ブラック）, Kamen Raidā Burakku). Unlike his counterpart in the World of Black RX, he is warned of Decade and initially sees him as an enemy.[17][18][19][20] It is not until the interference of Dai-Shocker does he finally consider Decade as an ally, revealing that he has been fighting Dai-Shocker with the aid of Joe the Haze.

Tetsuo Kurata also portrays the role of Kotaro Minami in the character's World of Black incarnation.

"Amazon" (アマゾン) is a man from the Amazon Rainforest who traveled across the world to find a place that he could call home, eventually arriving in Japan where he fights Geddon as Kamen Rider Amazon (仮面ライダーアマゾン, Kamen Raidā Amazon).[21][22] Though disillusioned after Masahiko used him to get the GiGi Armlet, Amazon regains his trust in humanity when the boy returns the armlet, finding his place by the Okamura. Afterwards, he aids Decade in battle against Apollo Geist and Llumu Qhimil, forcing Apollo Geist into retreat with his Dai Setsudan and destroying Llumu with his Super Dai Setsudan after Decade equipped him with the GaGa Armlet. His full name is not given in the television series, but is mentioned in Televi-Kun magazine, which his real name was Daisuke Yamamoto (山本 ダイスケ, Yamamoto Daisuke).

Amazon is portrayed by Enrique Sakamoto (坂本 エンリケ, Sakamoto Enrike).

Masahiko Okamura (岡村 マサヒコ, Okamura Masahiko) is a 4th grade student whose father died a year prior to Dai-Shocker's arrival, escaping the pain of his father's death by joining the Shocker School that has been established in his world. Because he excels in exposing rebels, Llumu Qhimil uses the boy to find Amazon's hideout. But during the fight, Dai-Shocker's forces turn on him, leading him to take GiGi Armlet from Amazon to get back in Dai-Shocker's good graces.[21][22] When he is turned in to become the first of Llumu Qhimil's monster conversion project, he realizes that the truth and helps in regaining Amazon's GiGi Armlet and faith in people.[23][24]

Masahiko Okamura is portrayed by Akashi Takei (武井 証, Takei Akashi).

Ritsuko Okamura (岡村 リツコ, Okamura Ritsuko) is Masahiko's older sister and is a school nurse at the Shocker School.[21][22] When she discovers that the Hikari Studio group has infiltrated the school, she sends Shocker Combatmen after them, until Masahiko proves to her that the Kamen Riders are not evil.[23][24]

Ritsuko Okamura is portrayed by Yuki Terada (寺田 有希, Terada Yuki).

Several kaijin members of Dai-Shocker appear in the World of Amazon.

• Go-Jaraji-Da (ゴ・ジャラジ・ダ, Go Jaraji Da): A porcupine Gurongi. Destroyed when Amazon used his Jaguar Shock on him.
• Propheta Cruentus (プロフェタ・クルエントゥス, Purofeta Kuruentusu): A Mantis Lord, destroyed by Kuuga Titan Form's Calamity Titan attack.
• Camponotus Worm Maxilla (カンポノタスワーム・マキシラ, Kanponotasu Wāmu Makishira): A carpenter ant Worm destroyed by Decade's Dimension Kick.
• Bakeneko (バケネコ): A cat Makamou. Destroyed when Amazon used his Big Slice on him.
• Shocker Combatmen (ショッカー戦闘員, Shokkā Sentōin)
• Shocker Scientists (ショッカー科学者, Shokkā Kagakusha)
• Vigilantes (自警団, Jikeidan): A volunteer military police formed from the residents of the World of Amazon who act in flushing out potential threats.
• Yobuko (ヨブコ): Formerly the Vigilantes' leader who gets transformed into a Makamou as a reward by Llumu Qhimil using the powers of both the GiGi and GaGa armlets on him.

Yuki (ユウキ, Yūki) is the Queen of the Fangires from the World of Kiva. Her true form is the Thorn Fangire (ソーンファンガイア, Sōn Fangaia), whose true name is Perishing at the Altar, Silence from a Deep Kiss (滅びゆく祭壇に、沈黙より深いキスを, Horobiyuku Saidan ni, Chinmoku yori Fukai Kisu o), a sea cucumber Fangire that belongs to the Aqua Class (アクアクラス, Akua Kurasu) Tribe and able to execute her own version of the "Final Zanvat Slash". Though she supports Wataru, Yuki actually sides with Apollo Geist, marrying him to give him immortality so she can have a place in Dai-Shocker. When Tsukasa crashes the wedding, the Thorn Fangire fights him and is killed by Decade Complete Form with Ryuki Survive's power.[25][26]

Yuria Haga (芳賀 優里亜, Haga Yuria) portrays Yuki, having portrayed the similar character Mio Suzuki in Kamen Rider Kiva. She is also known for her role as Mari Sonoda in Kamen Rider 555.

Wataru as Kamen Rider Kiva of the World of Kiva leads these two Kamen Riders in the World of the Rider War, fighting the World of Blade's Kamen Riders.

• Kamen Rider Rising Ixa: Killed by Blade in the initial battle.
• Kamen Rider Saga: Fights in the initial battle and later kills Akira and Todoroki before being killed by Hibiki.

Wataru also leads a group of Fangires (ファンガイア, Fangaia), as their king, in the World of the Rider War. However, they are actually on Dai-Shocker's side.

• Shark Fangire (シャークファンガイア, Shāku Fangaia): Destroyed by Diend.
• Silkmoth Fangire (シルクモスファンガイア, Shirukumosu Fangaia): Destroyed by Diend.
• Horsefly Fangire (ホースフライファンガイア, Hōsufurai Fangaia): Destroyed by Diend.
• Warthog Fangire (ウォートホッグファンガイア, Wōtohoggu Fangaia): Aiding in the fight against the World of Blade, Yuki sics him on Tsukasa when he refuses to aid their side. The Fangire is easily destroyed by Decade in seconds as a result.

Kazuma Kendate of the World of Blade leads the two remaining Kamen Riders in the World of the Rider War against the World of Kiva's Riders. When Super Apollo Geist speeds up the convergence of the Nine Worlds, the World of Blade is destroyed, taking all those from it with it.

• Kamen Rider Garren: Appears in the initial skirmish between his world and Kiva's, Garren later shows up with Kazuma when they help Tsukasa fight Apollo Geist.
• Kamen Rider Leangle: Killed in the initial battle by Kiva as revenge for Rising Ixa's death.

The Undead (アンデッド, Andeddo) originally from the World of Blade fight alongside the World of Blade's Kamen Riders, fighting against the Fangires in the World of the Rider War. However, they are actually on Dai-Shocker's side.

• Deer Undead (ディアーアンデッド, Diā Andeddo): The Six of Spades Undead, destroyed by Diend.
• Scarab Undead (スカラベアンデッド, Sukarabe Andeddo): The Ten of Spades Undead, destroyed by Diend.
• Lizard Undead (リザードアンデッド, Rizādo Andeddo): The Two of Spades Undead, destroyed by Diend.

Asumu leads the group of Kamen Riders from the World of Hibiki. With most of the other Oni dead, Asumu worries that all of his friends are dead and he is now alone.

• Kamen Rider Todoroki: Todoroki is killed by Saga when he leads the Fangires in an assault against the World of Hibiki Riders.
• Kamen Rider Amaki: Along with Todoroki, she is killed by Saga when he leads the Fangires in an assault against the World of Hibiki Riders.

To fight Decade, Diend, Kuuga, Kiva, and Hibiki, Super Apollo Geist recreates the following kaijin from the Nine Worlds:[27][28]

• Phylloxera Worm (フィロキセラワーム, Firokisera Wāmu): Created by combining Worms. The Phylloxera Worm is destroyed by Diend's Blue Strike.
• Tiger Orphnoch (タイガーオルフェノク, Taigā Orufenoku): Created by combining Orphnoch. The Tiger Orphnoch is destroyed by Decade Complete Form's Enhanced Dimension Kick.
• Paradoxa Undead (パラドキサアンデッド, Paradokisa Andeddo): Created by combining Undead. The Paradoxa Undead is destroyed by Kiva.
• Beetle Fangire (ビートルファンガイア, Bītoru Fangaia): Created by combining Fangires. The Beetle Fangire is destroyed by Kuuga's Mighty Kick.
• Buffalo Lord Taurus Ballista (バッファローロード タウルス・バリスタ, Baffarō Rōdo Taurusu Barisuta): Created by combining Lords. The Buffalo Lord is destroyed by Hibiki.
• Alligator Imagin (アリゲーターイマジン, Arigētā Imajin): Created by combining Imagin. The Alligator Imagin is destroyed by Decade Complete Form's Enhanced Dimension Kick.

Sayo Kadoya (門矢 小夜, Kadoya Sayo) is Tsukasa's younger sister. She is a pianist and is protected by Nobuhiko Tsukikage due to her possession of the Stone of the Earth, which is the source of Dai-Shocker's travel between the A.R. Worlds. This allows her to become High Priestess Bishium (大神官ビシュム, Daishinkan Bishumu), whom Shadow Moon manipulated to hate Tsukasa and turn Yusuke into her puppet. After realizing that she has been used, she destroys the Stone of the Earth and later makes amends with Tsukasa before he leaves.[29]

Sayo Kadoya is portrayed by Moe Arai (荒井 萌, Arai Moe). As a child, Sayo is portrayed by Momoka Ishii (石井 萌々果, Ishii Momoka).

Nobuhiko Tsukikage (月影 ノブヒコ, Tsukikage Nobuhiko) is a butler who takes care of Sayo and convinces her to become Bishium as part of his plan take over Dai-Shocker. Through his Shadow Charger belt, Nobuhiko can transform into Shadow Moon (シャドームーン, Shadō Mūn). Once he ousts the former leader of Dai-Shocker, Tsukasa Kadoya, Nobuhiko becomes its leader as he leads the group to hunt down every Kamen Rider. In the end, though he overpowers Decade and Kuuga, Shadow Moon is defeated by Double and destroyed by the All Rider Kick. While shares the same name with Nobuhiko Akizuki, the original Shadow Moon from Kamen Rider Black, his surname "Tsukikage" means "Moon Shadow".[29]

Nobuhiko Tsukikage is portrayed by Ryuichi Oura (大浦 龍宇一, Ōura Ryūichi).

Joji Yuki (結城 丈二, Yūki Jōji, read as "Joji Yu-ki" in "The Next Decade" PV) is a mysterious young man with a prosthetic arm. He was a scientist who worked for Dai-Shocker and was involved in the production of the DecaDriver and the DienDriver. For unknown reasons, Yuki rebels against Dai-Shocker and is punished when the organization's leader at the time, Tsukasa Kadoya, orders the amputation of his arm.[29] This has made him a wanted man in the World of Decade.[30] Though he attempts to get his revenge on Tsukasa when he returns and is dethroned by Shadow Moon, Joji spares Tsukasa's life after seeing him no longer as the man he hated and encourages him to fight Dai-Shocker. He is able to remove his prosthetic arm to attach a powerful laser cannon.

The original Joji Yuki is the alter ego of Riderman (ライダーマン, Raidāman), who appears later in the All Riders vs. Dai-Shocker film. The Joji Yuki of the World of Decade does not transform into Riderman.

Joji Yuki is portrayed by musical artist Gackt, a character also portrayed in his music video for "The Next Decade". A redesigned Riderman costume was planned for the film (akin to the redesigns found in Kamen Rider The First and The Next), but was left out due to time constraints, with only the laser cannon made.

Kaijin from the Shōwa Kamen Rider Series

• Shiomaneking (シオマネキング, Shiomanekingu): A monstrous fiddler crab-like member of Shocker.
• Ganikomol (ガニコウモル, Ganikōmoru): A member of Gelshocker that is the combination of a crab and a bat.
• Destron Combatmen (デストロン戦闘員, Desutoron Sentōin): The footsoldiers of Destron.
• Doras (ドラス, Dorasu): A grotesque Kamen Rider-like form that is the aspect of the Neonoid.
• Cobra Man Garai (コブラ男ガライ, Kobura Otoko Garai): An armored cobra-like monster who is the child of the Fog Mother.

Gurongi from Kamen Rider Kuuga

• Zu-Mebio-Da (ズ・メビオ・ダ, Zu Mebio Da) A leopard Gurongi.
• Me-Bajisu-Ba (メ・バヂス・バ, Me Bajisu Ba): A wasp Gurongi.
• Me-Ginoga-De (メ・ギノガ・デ, Me Ginoga De): A mushroom Gurongi.
• Go-Gadoru-Ba (ゴ・ガドル・バ, Go Gadoru Ba): A rhinoceros beetle Gurongi.

Lords from Kamen Rider Agito

• Leiurus Acutia (レイウルス・アクティア, Reiurusu Akutia): A scorpion Lord.
• Formica Pedes (フォルミカ・ペデス, Forumika Pedesu): A black carpenter ant Lord.
• Formica Regia (フォルミカ・レギア, Forumika Regia): A queen ant Lord.

Mirror Monsters from Kamen Rider Ryuki

• Sheerghost (シアゴースト, Shiagōsuto): A dragonfly larva Mirror Monster.
• Raydragoon (レイドラグーン, Reidoragūn): A dragonfly Mirror Monster.
• Psycorogue (サイコローグ, Saikorōgu): A robotic cricket Mirror Monster.

Orphnoch from Kamen Rider 555

• Butterfly Orphnoch (バタフライオルフェノク, Batafurai Orufenoku): A butterfly Orphnoch.
• Giraffe Orphnoch (ジラフオルフェノク, Jirafu Orufenoku): A giraffe Orphnoch.
• Longhorn Orphnoch (ロングホーンオルフェノク, Ronguhōn Orufenoku): A longhorn beetle Orphnoch.
• Slug Orphnoch (スラッグオルフェノク, Suraggu Orufenoku): A slug Orphnoch.
• Wild Boar Orphnoch (ワイルドボアオルフェノク, Wairudo Boa Orufenoku): A wild boar Orphnoch.
• Pelican Orphnoch (ペリカンオルフェノク, Perikan Orufenoku): A pelican Orphnoch.
• Stinkbug Orphnoch (スティンクバグオルフェノク, Sutinkubagu Orufenoku): A stinkbug Orphnoch.
• Arch Orphnoch (アークオルフェノク, Āku Orufenoku): A grasshopper Orphnoch.

Undead from Kamen Rider Blade

• Elephant Undead (エレファントアンデッド, Erefanto Andeddo): The Jack of Clubs Undead.
• Giraffa Undead (ギラファアンデッド, Girafa Andeddo): The King of Diamonds Undead.
• Darkroach (ダークローチ, Dāku Rōchi): A cockroach Undead.

Makamou from Kamen Rider Hibiki

• Kappa (カッパ): A snapping turtle/frog Makamou.
• Bakeneko (バケネコ): A cat Makamou.
• Hitotsumi (ヒトツミ): A Futakuchi-onna Makamou.

Worms from Kamen Rider Kabuto

• Coleoptera Worm Aeneus (コレオプテラワーム・アエネウス, Koreputera Wāmu Aeneusu): A scarab Worm.
• Coleoptera Worm Croceus (コレオプテラワーム・クロセウス, Koreputera Wāmu Kuroseusu): A scarab Worm.
• Coleoptera Worm Argentum (コレオプテラワーム・アージェンタム, Koreputera Wāmu Ājentamu): A scarab Worm.
• Geophilid Worm (ジオフィリドワーム, Jiofirido Wāmu): A centipede kaijin.
• Subst Worm (サブストワーム, Sabusuto Wāmu): A crayfish Worm.
• Cassis Worm Gladius (カッシスワーム・グラディウス, Kasshisu Wāmu Guradiusu): A horseshoe crab Worm.

Imagin from Kamen Rider Den-O

• Albinoleo Imagin (アルビノレオイマジン, Arubinoreo Imajin): A white lion Imagin.
• Mole Imagin (Axe Hand) (モールイマジン（アックスハンド）, Mōru Imajin (Akkusu Hando)): A mole Imagin armed with axe.
• Mole Imagin (Drill Hand) (モールイマジン（ドリルハンド）, Mōru Imajin (Doriru Hando)): A mole Imagin armed with drill.
• Mole Imagin (Cross Hand) (モールイマジン（クロスハンド）, Mōru Imajin (Kurosu Hando)): A mole Imagin armed with claw.

Fangire from Kamen Rider Kiva

• Rat Fangire (ラットファンガイア, Ratto Fangaia): A rat Fangire.
• Sungazer Fangire (サンゲイザーファンガイア, Sangeizā Fangaia): A giant girdled lizard Fangire.
• Bat Fangire (バットファンガイア, Batto Fangaia): A bat Fangire.

Other Kaijin from Kamen Rider Decade

• Taurus Ballista (タウルス・バリスタ, Taurusu Barisuta): The Buffalo Lord who appeared previously in Kamen Rider Decade.

Yuriko Misaki (岬 ユリコ, Misaki Yuriko) is a girl who lives in this A.R. World who meets Tsukasa during his rampage against the Kamen Riders. She follows Tsukasa, urging him along in his mission to be the destroyer of worlds. Like her namesake from Kamen Rider Stronger, Yuriko has the ability to transform into Electro-Wave Human Tackle (電波人間タックル, Denpa Ningen Takkuru). It is said that she died in a fight with Wasp Woman years in the past but due to having never found her place in the world, she still searches for it even in death. She finds her place with Tsukasa, the only one who cared for her. In the end, she sacrifices herself to mortally wound Wasp Woman with her Ultra Cyclone attack and save Natsumi from her. Now able to rest in peace having finally having found her place and avenged her death, she disappears.

Yuriko Misaki is portrayed by Alice Hirose (広瀬 アリス, Hirose Arisu).[31]

The evil Super Shocker (スーパーショッカー, Sūpā Shokkā) organization is formed from the last remnants of Dai-Shocker, with the destruction of the Nine Worlds and the destruction of Dai-Shocker. In addition to the high-ranking members Super Doctor Shinigami and Colonel Zol, other villains from the Kamen Rider Series make up the ranks of Super Shocker.[31] They utilize the Super Crisis Fortress (スーパークライス要塞, Sūpā Kuraisu Yōsai) as their base.

Wasp Woman (ハチ女, Hachi Onna) was a bee/wasp-like cyborg with a rapier as her weapon, and previously a member of Shocker in Kamen Rider, being the one who killed Tackle while a member of Dai-Shocker. She is now one of the high-ranking members of Super Shocker, going after Natsumi until she is mortality wounded by Electro-Wave Human Tackle's Ultra Cyclone. Wasp Woman releases the Neonoid to make her more powerful, only to be engulfed by it.

This iteration of Wasp Woman is portrayed by Nao Oikawa (及川 奈央, Oikawa Nao).[31]

The Neonoid (ネオ生命体, Neo Seimeitai) of Kamen Rider ZO is a pool of living fluid that relies on the very container its dwells in as its life support and create a grotesque Kamen Rider-like incarnation known as Doras (ドラス, Dorasu). Its personality is extremely childish and somewhat sadistic, though it appears it doesn't realize the true nature of what its doing, referring to its attacking the Kamen Riders as 'playing'. Super Doctor Shinigami seeks to revive the Neonoid in order to destroy Kamen Rider Decade. But once revived, it is beyond Super Shocker's control as it consumes Wasp Woman and creates Doras to fight the Kamen Riders. Though Doras is destroyed by a combined finisher from all the most powerful forms of the Nine World Riders, the Neonoid takes control of the Super Crisis Fortress until it is destroyed. However, it survives and absorbs the Dummy Dopant to become the strongest monster Ultimate D (アルティメットD, Arutimetto Dī, The letter D stands for "Doras" and "Dummy Dopant") before quickly meeting its end through Decade and Double's Triple Extreme Rider Kick.[31]

The Neonoid is voiced by Yūtarō Honjō (本城 雄太郎, Honjō Yūtarō), while Doras's vocal effects are provided by Keikō Sakai (酒井 敬幸, Sakai Keikō). As Ultimate D, he is also voiced by Toru Tezuka (手塚 とおる, Tezuka Tōru).

The Super Shocker Combatmen (スーパーショッカー戦闘員, Sūpā Shokkā Sentōin) are remodeled versions of the Dai-Shocker's footsoldiers, resembling the Shocker Combatmen and tending to scream out "Yeee" (イーッ, Ī). Like the Dai-Shocker Combatmen they are also able to assume missile-like forms.

Kaijin from the Shōwa Kamen Rider Series

• Zanjioh (ザンジオー, Zanjiō): A salamander kaijin of Shocker.
• Jaguar Man (ジャガーマン, Jagā Man) A jaguar kaijin of Shocker.
• Poison Lizard Man (毒トカゲ男, Dokutokage Otoko): A giant girdled lizard kaijin of Shocker.
• Hilchameleon (ヒルカメレオン, Hirukamereon): A member of Gelshocker that is the combination of a leech and a chameleon.
• Cobra Man Garai (コブラ男ガライ, Kobura Otoko Garai): An armored cobra kaijin of Fog.

Kaijin from the Heisei Kamen Rider Series

• Zu-Gooma-Gu (ズ・ゴオマ・グ, Zu Gōma Gu): A vampire bat Gurongi in Ultimate Form.
• Go-Jaraji-Da (ゴ・ジャラジ・ダ, Go Jaraji Da): A porcupine Gurongi.
• Volucris Falco (ウォルクリス・ファルコ, Worukurisu Faruko): A falcon Lord.
• Solospider (ソロスパイダー, Sorosupaidā): A armored tetragnatha praedonia Mirror Monster.
• Scorpion Orphnoch (スコーピオンオルフェノク, Sukōpion Orufenoku): A scorpion Orphnoch.
• Titan (ティターン, Titān): A scorpion/chameleon Undead.
• Kodama (コダマ): A tree Makamou.
• Sectio Worm Acuere (セクティオワーム・アクエレ, Sekutio Wāmu Akuere): A mantis Worm.
• Cobra Imagin (コブライマジン, Kobura Imajin): A cobra Imagin.
• Gecko Imagin (ゲッコーイマジン, Gekkō Imajin): A gecko Imagin.
• Sungazer Fangire (サンゲイザーファンガイア, Sangeizā Fangaia): A giant girdled lizard Fangire.

In the director's cut of the film, Natsumi has a dream where she sees Tsukasa being attacked by an evil doppelgänger of himself which transforms into a version of Kamen Rider Decade Complete Form which has a series of Decade Complete Final Kamen Rider Cards instead of the Kamen Ride Cards of the Nine Worlds' Kamen Riders. This other Kamen Rider Decade attacks the original Tsukasa, shortly before Natsumi wakes from her dream. The scene featuring this encounter originally appeared in the teaser for the film in the television series' finale.