This article is about a/an character in Kamen Rider Build.
For the World of Build version, see Ryuga Banjo.

Ryuga Banjo (万丈 龍我 Banjō Ryūga) is a 23-year-old fighter who is the New World counterpart of Ryuga Banjo. He continues exists as an independent individual due to his original counterpart being merged with part of Evolto before birth.

Character History

NW Ryuga & Katsumi

After the creation of the New World, a new version of Ryuga is walking his girlfriend Kasumi. Sento Kiryu goes to him, but Ryuga doesn't recognize him and thinks he is a fan of his fighting matches. Sento then just shakes his hand and then walks off in sorrow as the new Ryuga walks off with Kasumi to get ice cream. When Sento reunites with the Ryuga from the World of Build, Ryuga somehow survived and exists now as an anomaly too in this world. Ryuga complains to Sento that nobody remembers him and some doppelgänger of him has stolen his girlfriend. Sento surmises that since Evolto's DNA is part of Ryuga and a version of Ryuga exists here, Ryuga's alien hybrid DNA and the non-existence of Evolto is causing some kind of paradox that canceled out the erasure of the existence of one or both Ryugas. The Tomorrow Build Will Create

Behind the Scenes


Ryuga Banjo is portrayed by Eiji Akaso (赤楚 衛二 Akaso Eiji).


  • Noticably, this version of Ryuga sports black hair in contrast to the original's ginger colored hairstyle, implying the ginger color originated from him possessing Evolto's DNA.
  • It's currently unknown whether or not this Banjo regained his memories of the old world following Killbas' intervention like Takumi Katsuragi did, regardless of their anomalies' existance.



Sento Kiryu (Takumi Katsuragi) - Ryuga Banjo - Kazumi Sawatari - Gentoku Himuro - Evolto - Nariaki Utsumi - Shinobu Katsuragi - Kengo Ino - Killbus - Keiji Uraga
Transformation Gear
Fullbottles - Build Driver - Transteam Gun - (Great) Cross-Z Dragon - Sclashjellies - Sclash Driver - Hazard Trigger - Nebulasteam Gun - Cross-Z Magma Knuckle - Evol-Driver - Evol-Trigger - Grease Blizzard Knuckle - Killbuspider - Grease Perfect Kingdom
Drill Crusher - Hawk Gatlinger - 4Koma Ninpoutou - Kaizoku Hassyar - Fullbottle Buster - Steam Blade - Beat Closer - Twin Breaker - Muscle Glove - Solstall Wings - Giant Scratcher - Space Ride Arm - Spine Knuckle - Long Range Cleaner - Trash Converter - Gold Lio Gauntlet - Multi Deluge Gun
Pandora Box - Halfbodies - Fullbottle Holder - Build Phone
Vortex Finish - Hazard Level - Project Build - Sky Wall - Nebula Gas
nascita: Misora Isurugi - Soichi Isurugi - Sawa Takigawa - Kazumi Sawatari - Gentoku Himuro
Prime Ministers: Taizan Himuro (Touto) - Yoshiko Tajimi (Hokuto) - Masakuni Mido (Seito)
Namba Heavy Industries Ltd.: Juzaburo Namba - Nariaki Utsumi - Haruhiko Wanibuchi - Guardian
Hell Bro's: Fu Washio - Rai Washio - Yoshikazu Takahashi - Norio Matsui
Aliens: Vernage
Downfall: Keiji Uraga - Simon Marcus
Gentoku Himuro - Evolto - Nariaki Utsumi - Takumi Katsuragi - Shingo Kuwata - Eita Kawai - Yoshikazu Takahashi - Norio Matsui
Touto: Needle Smash - Strong Smash - Burn Smash - Flying Smash - Mirage Smash - Square Smash - Press Smash - Ice Smash - Stretch Smash
Hokuto: Castle Hard Smash - Stag Hard Smash - Owl Hard Smash
Kaiser: Kaisei Mogami (World of Ex-Aid)
Kengo Ino - Ryoka Saiga - Mitsuomi Gobara - Evolto - Killbus
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