Ryoma Sengoku

Ryoma Sengoku (戦極 凌馬) is the creator of the Sengoku Driver. He is 26 years old and works under Takatora Kureshima for their secret project. Ryoma Sengoku transforms into Kamen Rider Duke using the E.L.S. 01 Lemon Energy Lockseed with the Genesis Driver.

Arms
Lemon Energy Arms Lemon Energy Arms (檸檬エナジーアームズ) is Duke's default yellow form. Accessed through the Lemon Energy Lockseed.

Equipment

 * Genesis Driver - Transformation device
 * Lockseeds - Gives access to Duke's form changes, depending on which arm the lock is