Ryoma Sengoku

Ryoma Sengoku, refered to as Professor Ryoma, was the creator of the Sengoku Driver and the Genesis Driver. He worked under Takatora Kureshima, his closest friend to stop Helheim's invasion.

However, after a conversation gone awry with Takatora, Ryoma secretly plans a coup against him. Ryoma Sengoku initially transformed as Kamen Rider Duke using a Sengoku Driver. He later upgrades himself along with Takatora using the Genesis Driver and the Lemon Energy Lockseed in place of his regular Lemon Lockseed. Further upgrades were then given to Genesis Driver to allow him to combat the weaker Over Lords with relative ease as well with additional functionality.

Publication Information

Protagonist : Ryoma Sengoku
Japanese : 戦極凌馬
Known As : Professor Ryoma
Rider Users : Kamen Rider Duke, New Generation Rider Duke
Gender : Male
Season : Kamen Rider Gaim
Homeworld : Earth (Main Timeline Continuity)
First Appearance : Great Ball Watermelon, Big Bang!
Last Appearance : Kamen Rider Gaim Gaiden : Kamen Rider Duke (production-wise), Drive & Gaim : Movie War Full Throttle (chronologically)
Number of Appearances : 32 (Gaim), 5 (Movie)
Portrayer : Tsunenori Aoki
Main View : Full Episode & Download

History

Like Touka Akatsuki, he spent his childhood in the now-defunct Zawame Child Care Facility, where children with potential are experimented on and brutally raised to work for Yggdrasill in their future. Under Amagi Kureshima, he created his first products, the fully successful Forbidden Ringo Lockseed (although it has a negative side-effect), and a negative life draining prototype Yomotsuheguri Lockseed. He eventually was able to become a researcher for the company later in his life.

Beat Riders Saga

Sometime after the events of Bravo defeating Gridon and Kurokage, Ryoma arranges a meeting about Oren's portfolio, a man with military training. Later, Ryoma talks to Takatora about the new model which he replies to Ryoma that he will test the belt for humanity's sake. After, being requested by Sid to have multiple Lockvehicles, Ryoma views this as an opportunity to have all 7 prototype Sengoku Drivers in the Helheim forest. However, seeing Takatora is not pleased to have street rats in the forest, Ryoma warns Takatora to not destroy his precious work. During the Inves breakout of this event as they run rampant to Zawame City, Ryoma aids Gaim through the use of the Yggdrasill's tower through the use of a cloaking mechanism and beam weaponry.

Yggdrasill Saga

Ryoma later has Takatora test the Genesis Driver, impressed with its output and stating that they're one step closer to understanding the Helheim forest. Ryoma is seen once more, transforming with the Lemon Energy Lockseed, and watches Sigurd kill Ryoji Hase. In the aftermath of this event, he formally introduces himself to Kouta and Kaito, asking for their permission to continue using them in his quest for power. However, when the two escape, he finds himself puzzled when his equipment (the Lemon Energy Lockseed and the Genesis Core slot) is stolen.

Helheim & Over Lord Saga

Ryoma apologizes to Mitsuzane for revealing classified information to Kouta. Though Kouta ignores Mitsuzane's pleas to stop, Ryoma is shocked and angered when Kouta utilizes the Kachidoki Lockseed, a Lockseed not created by him. Realizing that someone is helping him from the shadows, he tasks Mitsuzane to investigate Kouta to find out who is helping him. Takatora, along with the group are informed of creatures that were more than a threat to humanity than the Inves by Mitsuzane. Realizing that their chance for power is dwindling, Ryoma gives Sid another Cherry Energy Lockseed, hoping that Sid will kill Kouta this time.

Forbidden Fruit Saga

Ryoma later shows up in a holographic conference with Yggdrasill's executives of their international branches from London, Hong Kong and Paris. When the Executives threaten to arrest him after an investigation of what the Japan branch did to cause this disaster, Ryoma activates a bug in the executives' phones which sends information to the world about Project Ark's culling of the population, causing everyone worldwide to panic.

The Fateful Sengoku Movie Battle

Despite his apparent death he returns in the film Movie War Full Throttle, as the cybernetic Mecha Ryoma Sengoku. Here, he was revived and served under the mechanical lifeform Megahex, who gives Mecha Ryoma the Dragon Fruits Energy Lockseed and attacks the Kureshima brothers, starting with the youngest first, beating him rather badly, though doesn't see Mitsuzane make off with a intact Sengoku Driver from his earlier bout with the Mecha Kurokages. Due to being assimilated to Megahex, Ryoma had finally achieved his lifelong dream to become a godlike figure.

Great Soccer Battle! Golden Fruits Cup!

In this world, Ryoma reveals the Over Lord's existence for his presentation, founding a piece of slab and its source. When the slab is destroyed, his camera is broken and recently attacked by an entity of Forbidden Fruit named Kougane. Trying to defend himself as Duke, but Kougane's hopper infects him and causes his death, at same time the camera focuses on Lapis, whom happens to witness his demise. His camera recording is soon found by Mitsuzane, shortly when Kougane's hopper is about to infect the young Kureshima, but Mitsuzane quickly noticed it and was able to prevent himself from being infected like what happened to his older brother, Takatora.

Gaim Gaiden : Kamen Rider Zangetsu

To be added

Gaim Gaiden : Kamen Rider Baron

To be added

Gaim Gaiden : Kamen Rider Duke

To be added

Appearances In Other Media

TV

Super Hero Time

Kamen Rider Duke alongside various other New Generation/Armored Riders poses with the ToQgers in the Gaim/ToQger Super Hero Time opening. He also clashes with ToQ 3gou at one point.

Video Game Appearances

Kamen Rider Battle : Ganbarizing

Duke is among the vast majority of Kamen Riders that are avaliable in this arcade game. Notably, he is shown to use the Legend Rider Lockseed to assume Wizard Arms.

Arms

Like the Armored Riders and his fellow New Generation Riders, Kamen Rider Duke's forms are called Arms. His Genesis Driver announces "Soda" before every transformation. By pushing the Genesis Driver's Seaboll Compressor into the Energy Lockseed after transforming from one to two times, Duke can activate one of two finishing moves based on his current Arms form: Squash or Sparking. In addition to the Genesis Driver's finishing moves, Duke can perform a Sonic Volley finishing attack by inserting an Energy Lockseed into the Energy Drive Bay of his Sonic Arrow.

Duke Genetic Ride Wear

Duke Genetic Ride Wear
- Duke Genetic Ride Wear is Duke's default form undersuit, which is briefly seen during Duke's transformation sequence before the Armor Part attaches.
- However, this form is completely vulnerable to any incoming attacks when shot at directly in the suit rather than at the Arms that is descending down on the Rider.
- This Genetic Ride Wear was formerly Duke's normal Ride Wear when he was still using a Sengoku Driver.

Sengoku Driver

Duke Lemon Arms

Duke Lemon Arms
- Come On! Lemon Arms : Incredible Ryo~ma! ― Transformation announcement
Appeareance : Kamen Rider Gaim Gaiden : Kamen Rider Duke
Lemon Arms is Duke's lemon-based armored European Knight form, which is accessed through the Lemon Lockseed.
While assuming Lemon Arms, Duke dons the Lemon Armor Part and his Arms Weapon is a unnamed rapier.

Duke Lemon Lockseed

Duke Lemon Lockseed
- Allows Duke to transform into Lemon Arms when using Ryoma's own Sengoku Driver, equipped with an unnamed rapier.
- Its code is LS-99.
- It is a recolor of the Kiwi Lockseed. This is the only Lockseed that announces its own creator name "Incredible Ryoma!", in a Baron-esque techno voice.

Genesis Driver

Duke Lemon Energy Arms

Duke Lemon Energy Arms
- Soda! Lemon Energy Arms : Fight, Power! Fight, Power! Fight! Fight! Fight! Fight! Fi-Fi-Fi-Fi-Fight! ― Transformation announcement
- Height : 206 cm
- Weight : 119 kg
- Punching power : 15.7 t.
- Kicking power : 19.5 t.
- Maximum jump height : 22 m. (72 ft.)
- Maximum running speed : 100 m. per 6.4 sec.
- Appearances : Gaim Gaiden: Duke, Episodes 14, 18, 19, Gaim Gaiden: Zangetsu, 28, 31, 32, Golden Fruits Cup!, 38-41, 43, Final Stage
Lemon Energy Arms is Duke's default lemon-based armored European Knight/Archer form. Accessed through the Lemon Energy Lockseed, this form bears the Lemos Headpiece helmet with the Steering Eye visor. This form debuts in episode 14, but its transformation sequence debuts in episode 28. While assuming Lemon Energy Arms, Duke dons the Lemon Energy Armor Part and his Arms Weapon is the Sonic Arrow.
Compared to his fellow New Generation Riders, Duke has the hardest punches and kicks. However, his agility stats are subpar. Ryoma later tweaks his Genesis Driver to increase the overall performance of Duke's stats, allowing him to combat Over Lord Shinmugurun with relative ease whereas Gaim Kachidoki Arms struggled to fight against Shinmugurun. In episode 40, Duke also has an invisible/camouflage ability to manage escaping when Redyue uses hypnosis to channeling Gaim to see his vision.
This Arms has two Rider Shooting finishing attacks:
- Sonic Volley : After Duke locks the Lemon Energy Lockseed into the Sonic Arrow, he fires a powerful arrow shot that when it hits a target forms a lemon slice for a brief second before exploding. Duke's second Sonic Volley much like the combination of himself's Lemon Energy Squash finisher and Baron's shooting version Sonic Volley: First his Sonic Arrow shows extending, then he shoots a powerful arrow shot that Lemon pierces through the target.
- Unnamed finisher : After Duke activates his Genesis Driver's Squash function, he fuels all the energy from the Lemon Energy Lockseed into his body, which is then converted into multiple illusions of himself that surround the target before he executes his Sonic Arrow's standard Lemon Energy-like finishing attack.

Lemon Energy Lockseed

Lemon Energy Lockseed
- Allows Duke to transform into Lemon Energy Arms.
- Its code is ELS-01 and it is Class S.
- Kouta Kazuraba was given a Lemon Energy Lockseed, along with a Genesis Core, by DJ Sagara after the latter was impressed by the former's sense of duty.
- It was later revealed that the Lemon Energy Lockseed and Genesis Core that DJ Sagara had were stolen from Ryoma's, though he soon makes another one, along with a replacement Genesis Core
- After his Genesis Driver is stolen by Yoko Minato, the location of this Lockseed is unknown

Duke Dragon Energy Arms

Duke Dragon Energy Arms
- SODA! Dragon Energy Arms! (Fast techno music) ― Transformation announcement
- Height : 206 cm
- Weight : 119 kg
- Punching power : 15.7 t
- Kicking power : 19.5 t
- Maximum jump height : 22 m
- Maximum running speed : 100 m. per 6.4 sec.
- Appeareance : Kamen Rider × Kamen Rider Drive & Gaim : Movie War Full Throttle.
Dragon Energy Arms is Duke's pitaya-based (specifically the Pitahaya blanca) armored European Knight/Archer form, as well as his ultimate form, which is accessed through the Dragon Fruits Energy Lockseed (reserved for Tyrant).
While assuming Dragon Energy Arms, Duke dons the Dragon Energy Armor Part and his Arms Weapon is the Sonic Arrow.
This Arms has two finishing attacks:
- Sonic Volley : After Duke locks the Dragon Fruits Energy Lockseed into the Sonic Arrow, he fires a powerful arrow shot that when it hits a target forms a Asian lung energy for a brief second before exploding.
- Unnamed Rider Slash : After Duke activates his Genesis Driver's Squash function, he fuels all the energy from the Dragon Fruits Energy Lockseed into his body, which is then converted into Sonic Arrow, before he executes Pitaya-shaped energy slash attack.

Dragon Fruits Energy Lockseed

Dragon Fruits Energy Lockseed
- Allows Duke to transform into Dragon Energy Arms.
- Its code is ELS-HEX.
- This is the only Energy Lockseed which is red in color, unlike the usual Energy Lockseeds, which are colored blue. Unlike the main four Energy Lockseeds, its shout of "SODA" is much louder and more excited, being the "Soda" sound used in Gaim's summer movie
- And this Energy Lockseed doesn't possess Helheim powers as well, unlike Tyrant's own Dragon Fruits Energy Lockseed ELS-PROTO.
- The Dragon Fruits Energy Lockseed is normally used by Kamen Rider Tyrant. It later destroyed along with Mecha Ryoma Sengoku's death, but the Genesis Driver he used was kept intact.

Other Arms

These Arms involve Lockseeds that are normally used by a different New Generation Rider. None of these Arms were assumed on-screen, but can be simulated via the Arms Change toyline.

Duke Cherry Energy Arms

Duke Cherry Energy Arms
- Soda! Cherry Energy Arms! (Techno beat music) ― Transformation announcement
Cherry Energy Arms is Duke's cherry-based armored European Viking/Archer form. Accessed through the Cherry Energy Lockseed (reserved for Sigurd), this form bears the Cher Headpiece helmet with the Steering Eye visor.
While assuming Cherry Energy Arms, Duke dons the Cherry Energy Armor Part and his Arms Weapon is the Sonic Arrow.

Duke Cherry Energy Lockseed

Duke Cherry Energy Lockseed
- Allows Sigurd to transform into Cherry Energy Arms.
- Its code is ELS-02 and it is Class S.
- Sigurd lost his first Cherry Energy Lockseed to Gaim after the Rider beat him with an enhanced Burai Kick while in Jimber Lemon Arms.
- He acquired another one, but it was later destroyed by Rosyuo's attack, along with his Genesis Driver, shortly before his death.

Duke Peach Energy Arms

Duke Peach Energy Arms
- Soda! Peach Energy Arms! (Arabian techno music) ― Transformation announcement

Duke Peach Energy Lockseed

Duke Peach Energy Lockseed
- Allows Marika to transform into Peach Energy Arms.
- Its code is ELS-03 and it is Class S.
- Yoko lost her first Peach Energy Lockseed to Kouta when he ripped it out of her Genesis Driver after she cancelled her transformation.
- She acquired another one sometime later. It was render useless by Ryoma's killswitch, but she later used it with the stolen Ryoma's Genesis Driver until her death.
- The Energy Lockseed's location is currently unknown. Its voice is pitched-up to sound higher.

Duke Melon Energy Arms

Duke Melon Energy Arms
- Soda! Melon Energy Arms! (Japanese techno music) ― Transformation announcement
Melon Energy Arms is Duke's Yubari King cantaloupe-based armored Japanese Samurai/Archer form. Accessed through the Melon Energy Lockseed (reserved for Zangetsu Shin), this form bears the Barilon Kabuto helmet with the Steering Eye visor. While assuming Melon Energy Arms, Duke dons the Melon Energy Armor Part and his Arms Weapon is the Sonic Arrow.

Duke Melon Lockseed

Duke Melon Lockseed
- Allows Zangetsu to transform into Melon Arms, equipped with the Melon Defender.
- Its code is LS-04 and it is Class A.
- It was destroyed by Mitsuzane as Zangetsu-Shin in their battle, but thanks to Mai, Takatora is able to get a new Melon Lockseed for the events of Movie War Full Throttle.

Rider Arms

Rider Arms are forms based on past Kamen Riders. Inexplicably, the New Generation Riders are capable of using the Legend Rider Lockseeds despite none of them being Class S Energy Lockseeds. All of these forms is exclusive to Kamen Rider Battle: Ganbarizing. However, some of these forms are also used in the norm by other Armored and New Generation Riders.

Duke Wizard Arms

Duke Wizard Arms
- Liquid! Wizard Arms : Shabadoobi Showtime! ― Transformation announcement
Wizard Arms is a Legend Rider Arms based on Kamen Rider Wizard's Flame Style, which is accessed through the Wizard Lockseed. While assuming Wizard Arms, Duke dons the Wizard Armor Part and his Arms Weapon is the WizarSwordGun.

Duke Wizard Lockseed

Duke Wizard Lockseed
- Squash : Chōīne, Saikō
- Au Lait : Special, Please
- Sparking : Slash Strike
Allows Kamen Rider Gaim to transform into Wizard Arms, equipped with the WizarSwordGun. By channeling the Wizard Lockseed into the Heisei Rider Lockseed, Kamen Rider Fifteen can transform into Wizard Arms. The core image depicts the WizarDriver while the lid backside image depicts the Flame Ring. Also a Kurokage/Bujin Gaim/Kamuro-styled Lockseed in the toyline.

Duke Hakaider

Duke Hakaider
- Height : 200 cm
- Weight : 150 kg
- Punching power : 23.7 t
- Kicking power : 49.2 t
- Maximum jump height : 17 m
- Maximum running speed : 100 m per 5.4 sec.
- Appeareance : Episode 30
In episode 30, Ryoma temporarily transplants his brain into the body of the android Hakaider.
In this form, he has greater strength than even Gaim's Kachidoki Arms, which he managed to overwhelm in the episode. Hakaider also proves to have great durability and is a skillful fighter. However, it was revealed that Hakaider made Ryoma become crazier and more violent
As a result, he wanted to destroy anything, mostly Kikaider. In the end, Ryoma transplants his brain back into his human body, scared of how dangerous Hakaider can be.