The Treacherous Deathmatch

is the twenty-sixth episode of Kamen Rider Build. It features the debut of the FullFull RabbitTank Bottle and the Fullbottle Buster. Hell Bro's makes an appearance in this episode following its initial appearance in Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~.
==Synopsis==
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…
==Plot==
to be added
==Cast==
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===Guest Casts===
*Announcer: 
*Fu Washio (Child): 
*Rai Washio (Child): 
===Suit Actors===
*Kamen Rider Build: 
*Kamen Rider Grease: 
*Engine Bro's: 
*Hell Bro's: 
==Forms and Collectibles Used==
===Fullbottles===
*Bottle used:
**Build
***Biotic: Rabbit
***Abiotic: Tank
***Other: Hazard Trigger
**Grease
***Biotic: N/A
***Abiotic: Robot (in Twin Breaker)
*Form used:
**Build
***RabbitTank Hazard Form
===Sclashjellies===
*Jelly used:
**Grease
***Robot
===Gears===
*Gear used:
**Engine Bro's
***Gear Engine
** Hell Bro's
*** Gear Engine, Gear Remocon
==Errors==
*to be added
==Notes==
*As part of Super Hero Time, this episode aired alongside episode 5, .
*Viewership: 4.5%
*Formula of the title:\#\{sporadic\ group\}=26 ()
*Fullbottles Obtained: FullFull RabbitTank
*Closing Screen Gears:
**Kaisers: Engine Bro's & Remocon Bro's
**Gears:
***Gear Engine, Gear Remocon
*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:
***Biotic: Dragon
***Abiotic: Lock
***Other: Cross-Z Dragon
**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==
*TV Asahi's official episode guide for 裏切りのデスマッチ
*Toei TV's official episode guide for 裏切りのデスマッチ
==References==