This article is about a/an episode in Kamen Rider Build.

The Treacherous Deathmatch (裏切りのデスマッチ Uragiri no Desumatchi) is the twenty-sixth episode of Kamen Rider Build. It features the debut of the FullFull RabbitTank Bottle and the Fullbottle Buster. The Washio Brothers' Hell Bro's form makes a brief appearance in this episode, after its initial appearance in Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~.


Sento went into Hazard form in order to try to protect the Pandora Box from Rogue. However, he went berserk and lost the Pandora Box to Seito. Not only that, but he also attacked Misora! It was just then that Misora’s bangle started to shine again… One week later, Grease, Cross-Z, and Build are summoned by Seito to participate in a 3 on 3 representative match. However, the identity of the spy who was involved in the robbery of the Pandora Box is not yet known. As the representative battle wages on, Nanba Heavy Industries’ chairman slowly starts to smile…


to be added


Guest Casts

Suit Actors

Forms and Collectibles Used


  • Bottle used:
  • Form used:
    • Build
      • RabbitTank Hazard Form


  • Jelly used:
    • Grease
      • Robot


  • Gear used:
    • Engine Bro's
      • Gear Engine
    • Hell Bro's
      • Gear Engine, Gear Remocon


  • to be added


Build EP26 CS
  • Closing Screen Gears:
  • Count at episode end
    • Bottles in Build's possession:
      • Biotic: Rabbit, Taka, Panda, Kaizoku, Unicorn, Rose, Turtle, Kabutomushi, Dog, Tora, Kujira, Shika, Kirin, Penguin, Obake, Sai
      • Abiotic: Tank, Gatling, Rocket, Syoubousya, Densya, Light, Smapho, Keshigomu, Watch, Camera, Televi, Mic, UFO, Jet, Senpuki, Sukebo, Magnet, Dryer
      • Other: RabbitTank Sparkling
    • Bottles in Cross-Z Charge's possession:
    • Bottles in Grease's possession:
      • Biotic: Wolf, Kuma, Kuwagata, Fukurou
      • Abiotic: Robot, Helicopter, Castle
    • Bottles in Rogue's possession: Bat, Crocodile Crack, Phoenix
    • Bottles in Blood Stalk's possession:
      • Biotic: Cobra, Gorilla, Ninjya, Harinezumi, Lion, Octopus, Spider, Same, Hachi
      • Abiotic: Diamond, Comic, Soujiki, Reizoku, Pyramid, Bike, Sensuikan
    • Jellies in Cross-Z Charge's possession: Dragon
    • Jellies in Grease's possession: Robot
    • Gears in Engine Bro's's possession: Gear Engine
    • Gears in Remocon Bro's's possession: Gear Remocon
  • When Sawa copies the blueprints for the Fullbottle Buster, Sento's computer displays the filename as 'FULLFULL BUSTER'.
  • This is the first episode since the form's debut that Ryuga doesn't transform into Cross-Z Charge.
  • This episode mark the last appearance of RabbitTank Hazard.

External links


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