This article is about a/an episode in Kamen Rider Build.
Red alert WARNING: This episode contains scenes of blood and bloodshed. Viewer discretion is advised!

The Counterattack Hero (逆襲のヒーロー Gyakushū no Hīrō) is the twenty-seventh episode of Kamen Rider Build. It features the debut of Build RabbitRabbit Form and the first full televised debut of the Washio Brothers' Hell Bro's form after its initial appearance in Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~.


The representative battle between Touto and Seito has begun! 3 on 3! Grease defeated Engine Bro's in the first round and gave Touto the first victory. Then in the second match… Hell Bro's appears with the strength of both combined systems! It has become a treacherous deathmatch, but Sento still remains determined, desperate to end this war once and for all!


to be added


Guest Casts

Suit Actors

Forms and Collectibles Used


  • Bottle used:
  • Form used:
    • Build
      • RabbitTank Sparkling Form, RabbitRabbit Form


  • Jelly used:
    • Cross-Z Charge
      • Dragon


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


  • to be added


Build EP 27 CS
  • Closing Screen Fullbottles:
    • Kamen Rider: Build
    • Fullbottles: FullFull RabbitTank Bottle (Rabbit mode)
  • Count at episode end
    • Bottles in Build's possession:
      • Biotic: Rabbit, Taka, Panda, Kaizoku, Unicorn, Rose, Kabutomushi, Tora, Kujira, Shika, Kirin, Penguin, Obake, Sai
      • Abiotic: Tank, Gatling, Rocket, Densya, Smapho, Keshigomu, Watch, Camera, Televi, Mic, UFO, Jet, Senpuki, Sukebo, Magnet, Dryer
      • Other: RabbitTank Sparkling, Hazard Trigger, FullFull RabbitTank
    • 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:
      • Biotic: Bat, Crocodile Crack, Phoenix, Turtle, Dog
      • Abiotic: Diamond, Syoubousya, Light
    • Bottles in Blood Stalk's possession:
      • Biotic: Cobra, Gorilla, Ninjya, Harinezumi, Lion, Octopus, Spider, Same, Hachi
      • Abiotic: Comic, Soujiki, Reizoko, 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
  • Footage from Sento's flashback is used from Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders.
  • The Nebula Hell Bro's body can briefly be seen during Fu's transformation before combining with the Gears to become Hell Bro's.
  • This is the first episode where Build doesn't uses any Abiotic Fullbottles.
  • This is the first episode to have a insert theme instead of the Opening theme

External links


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