This article is about a/an villain in Kamen Rider Build.
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Killbas (キルバス Kirubasu) is the older brother of the late Evolto, the last known remaining member of the Blood Tribe, and is the main antagonist of Kamen Rider Build NEW WORLD: Kamen Rider Cross-Z.[1] Killbas is able to transform into Kamen Rider Killbas (仮面ライダーキルバス Kamen Raidā Kirubasu) using the Build Driver and seeks vengeance for his brother's death.

Character History



Powers and Abilities





Behind the Scenes


Killbas is voiced by Anri Katsu (勝 杏里 Katsu Anri). As Satoshi Kakizaki, he is played by Gaku Shindo (進藤 学 Shindo Gaku), who is best known for his role as BarizorgIcon-crosswiki from Kaizoku Sentai GokaigerIcon-crosswiki. As Kamen Rider Killbas, his suit actor is unknown.


  • Killbas' spider motif finished the last part of the recurring bat/cobra/spider trio in the Kamen Rider franchise, a tribute to the first two Shocker monsters as well as the first monster to be upgraded, following Blood Stalk's cobra motif and Night Rogue's bat motif.
  • Killbas will most likely be the final movie-exclusive Kamen Rider to debut in Heisei Era considering the era ends a week after the film's release date.
  • Like previous V-Cinema Exclusive Riders, Killbas is made up of recycled parts from previous Rider suits. His helmet uses elements of Night Rogue/MadRogue's helmets, the shoulder and gauntlet parts are from Blood Stalk, bicep armor taken from either Blood Stalk, Night Rogue or MadRogue, as well as the standard Kamen Rider Build leg armor parts.
  • Kamen Rider Killbas' general design also feels reminiscent of Kamen Rider Saver, albeit vaguely. Both feature a primarily red color scheme, and Killbas is seen dual-wielding a sword and a bow-and-arrow weapon. The latter may only be applicable to a single scene, however.


Sento Kiryu - Ryuga Banjo - Kazumi Sawatari - Gentoku Himuro - Evolto - Nariaki Utsumi - Shinobu Katsuragi - Kengo Ino - Killbas
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
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 - Build Annihilation Plan
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 - Guardian
Hell Bro's: Fu Washio - Rai Washio
Aliens: Vernage
Gentoku Himuro - Evolto - Nariaki Utsumi - Takumi Katsuragi - Shingo Kuwata - Eita Kawai
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 Gohara - Evolto - Killbas