Daiki's treasure in this world is the K-Touch, which ultimately ends up in the hands of Tsukasa, allowing him to gain access to Decade Complete Form.
[1][2][3][4][5][6] 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).
[3][4] But his plan fails as Tsukasa refuses and defeats his allies, leaving Otoya as the only surviving Dark Rider.
She eventually gives her goodbyes to Natsumi while entrusting the K-Touch to Tsukasa, remaining in her world out of hope for the future.
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.
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.
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.
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.
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.
But as the world is dominated by the Roaches and their leader Fourteen, the human populace is mostly brainwashed into a state of euphoria and conditioned to see Kamen Riders as disruptors of the peace, and anyone who disobeys the rules, even slightly, has their free will completely removed.
The backdrop used to enter this world depicts a wanted poster with Diend's symbol on it in the foreground and a cityscape in the background.
[5][6][7][8][9][10] Junichi Kaito (海東 純一, Kaitō Jun'ichi) is Daiki's older brother within his home world.
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.
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.
Kuroda having previously portrayed a similar character Junichi Shimura in the film Kamen Rider Blade: Missing Ace.
Mitsuya having previously portrayed a similar character Natsumi Miwa in the film Kamen Rider Blade: Missing Ace.
The backdrop used to enter this world resembles the ending credits sequence of Shinkenger, featuring two kuroko opening up a curtain to reveal artistic representations of the five main Origami.
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.
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.
Their leading members live aboard the Rokumon Junk (六門船, Rokumonsen) and consist of Doukoku Chimatsuri, Tayu Usukawa and Shitari of the Bones.
World, Tsukasa originally wore a set of clothes that have him mistaken for Joe the Haze (霞のジョー, Kasumi no Jō) by Kotaro and the Crisis Empire.
Schwarian (シュバリアン, Shubarian) is a Kaima Robot from the Crisis Empire, seeing himself as the ultimate machine in his branch.
[19][20] Apollo Geist arrives in this world prior to its RX counterpart, recruiting the cult Gorgom as a result.
[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.
[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.
The backdrop used to enter this world depicts all nine of the Heisei Riders, the DenLiner, Dragredder, Castle Doran, and Ryokuōzaru rushing at Decade, mirroring the very opening scene of the series.
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.
To fight Decade, Diend, Kuuga, Kiva, and Hibiki, Super Apollo Geist recreates the following kaijin from the Nine Worlds:[27][28]