|This article is about a/an movie in Kamen Rider Gaim.|
|WARNING: This film contains scenes of graphic violence and controversial material. Viewer discretion is advised!|
Kamen Rider Gaim Gaiden: Kamen Rider Duke (仮面ライダー鎧武 (ガイム) 外伝: 仮面ライダーデューク Kamen Raidā Gaimu Gaiden: Kamen Raidā Dyūku) is the spin-off featurette focusing on the character of Ryoma Sengoku (Kamen Rider Duke), released alongside Knuckle as part of the second double set of Kamen Rider Gaim Gaiden, a series of V-Cinema (direct-to-video) releases that each serve as a spin-off hosted by a supporting Kamen Rider from Kamen Rider Gaim.
Premium Bandai then announced the DX Lemon Lockseed as well as a Kamen Rider Duke faceplate, which would be included in the DVD/Blu-Ray release.
Continuity and Placement
In the case of Duke, this Gaim Gaiden installment serves as a midquel to the Gaim series. The events take place before Kamen Rider × Kamen Rider Gaim & Wizard: The Fateful Sengoku Movie Battle as Ryoma is seen handing the Energy Lockseeds to Takatora and Yoko in the latter.
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Ryoma Sengoku continues his research of the Sengoku Drivers along with Takatora Kureshima. Takatora thinks that the lives of humanity was the number one priority, however Ryoma disliked his way of thinking increasing the production with cost as the main priority than efficiency.
Meanwhile Sid and Yoko investigate a suicide attack that was taking place in Yggdrasill. The mastermind of this incident was Black Bodhi. They come to know that one of Ryoma's former colleague was part of Black Bodhi and had used the Zakuro Lockseed to brainwash people. Ryoma knows this is impossible, because his former colleague died in the Out-of-Control Lockseed incident a long time ago.
|Kamen Rider Duke||Ryoma Sengoku|
|Kamen Rider Zangetsu||Takatora Kureshima|
New Generation Riders
|Kamen Rider Duke||Ryoma Sengoku|
|Kamen Rider Zangetsu Shin||Takatora Kureshima|
|Kamen Rider Sigurd||Lock Dealer Sid|
|Kamen Rider Marika||Yoko Minato|
|Kamen Rider Saver||Kugai Kudo|
- Ryoma Sengoku (戦極 凌馬 Sengoku Ryōma): Tsunenori Aoki (青木 玄徳 Aoki Tsunenori)
- Takatora Kureshima (呉島 貴虎 Kureshima Takatora): Yuki Kubota (久保田 悠来 Kubota Yūki)
- Yoko Minato (湊 耀子 Minato Yōko): Minami Tsukui (佃井 皆美 Tsukui Minami)
- Lock Dealer Sid (錠前ディーラー シド Jōmae Dīrā Shido): Kazuki Namioka (波岡 一喜 Namioka Kazuki)
- Kugai Kudo (狗道 供界 Kudo Kugai): Jun Toba (鳥羽 潤 Toba Jun)
- Believer: Naoki Saito (斎藤 直紀 Saitō Naoki), Takashi Kikuchi (菊池 隆志 Kikuchi Takashi), Eiichi Takagi (高木 英一 Takagi Eiichi)
- Employee: Akihiro Hosokawa (細川 晃弘 Hosokawa Akihiro)
- Researcher: Satoru Hirako (平子 悟 Hirako Satoru), Koji Tsuchimoto (辻本 耕志 Tsuchimoto Koji)
- Locks Used:
- Lemon, Lemon Energy
- Zangetsu (Shin):
- Melon, Melon Energy
- Zakuro, Blood Orange
- Cherry Energy
- Peach Energy
- Arms Changes:
- This is the only Gaim Gaiden movie to not have a theme song of its own.
- When Ryoma walks pondering about the Black Bodhi, an audible "CUT!" is heard.
- When Takatora slices open the Melon Lockseed, the Driver does not announce "Soiya!", instead it announces an elongated "Iyo!"
- Additionally, whenever Kugai Kudo transforms, despite having Genesis Core attached, his Sengoku Driver announces "Ha!" instead of "Soiya!"
- When Ryoma transforms into Lemon Energy Arms, the "Soda!" sound used is the excited version heard during Mecha Ryoma's transformation into Duke in Kamen Rider × Kamen Rider Drive & Gaim: Movie War Full Throttle.
- This installment also reveals about the pasts of Yoko Minato and Lock Dealer Sid prior to working with Yggdrasill Corporation.
- During the production of this film, Tsunenori Aoki wears a wig for one of his hairstyles as his character during the present day while his actual hairstyle was used for the past version of Ryoma.
- At the end of the this portion, Kugai Kudo is seen giving a Banana Lockseed to Shura, immediately starting the Knuckle portion of the installment. However, it has no any explanation of this scene.
- However, in the next segment, Shura is seen giving out a blank Zakuro Lockseed, possibly hinting at an unknown relationship between Shura and Kudo.