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

The Golden Soldier (黄金のソルジャー Ōgon no Sorujā) is the eighteenth episode of Kamen Rider Build. It features the full debut of Build SmaphoWolf Form, having previously appeared briefly in the video in episode 9, the in-series debut of Build PhoenixRobo Form, after its appearance in Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders, Kazumi Sawatari's first on-screen transformation into Kamen Rider Grease, and the return of Nariaki Utsumi following his apparent death in episode 12.


The man holding his own Sclash Driver is known as Hokuto’s assassin, Kazumi Sawatari. But the Sclash Driver was developed by Sento, so how is it in the hands of Hokuto already?! Before all those questions could be answered, Kazumi transforms into Kamen Rider Grease!


to be added


Guest Casts

Suit Actors

Forms and Collectibles Used


  • Bottle used:
    • Build
      • Biotic: Phoenix, Wolf, Panda
      • Abiotic: Robot, Smapho, Rocket
      • Other: RabbitTank Sparkling
    • Grease
    • Castle Hard Smash
      • Castle
    • Stag Hard Smash
      • Kuwagata
    • Owl Hard Smash
      • Fukurou
  • Form used:
    • Build
      • RabbitTank Sparkling Form, PhoenixRobo Form, SmaphoWolf Form, RocketPanda Form


  • Jelly used:
    • Cross-Z Charge
      • Dragon
    • Grease
      • Robot


Phoenix Robot CS
  • Closing Screen Fullbottles:
    • Kamen Rider: Build
    • Fullbottles:
      • Biotic: Phoenix
      • Abiotic: Robot
  • Count at episode end
    • Bottles in Build's possession:
      • Biotic: Rabbit, Gorilla, Taka, Ninjya, Panda, Harinezumi, Lion, Kaizoku, Octopus
      • Abiotic: Tank, Diamond, Gatling, Comic, Rocket, Syoubousya, Soujiki, Densha, Light
      • Other: RabbitTank Sparkling
    • Bottles in Cross-Z Charge's possession:
    • Bottles in Grease's possession:
      • Biotic: Phoenix, Wolf, Kuma
      • Abiotic: Robot, Smapho, Helicopter, Televi
    • Bottles in Night Rogue's possession: Bat
    • Bottles in Blood Stalk's possession: Cobra
    • Bottles in Castle Hard Smash's possession: Castle
    • Bottles in Stag Hard Smash's possession: Kuwagata
    • Bottles in Owl Hard Smash's possession: Fukurou
    • Jellies in Cross-Z Charge's possession: Dragon
    • Jellies in Grease's possession: Robot
Greese's lock screen
  • The lock screen on Kazumi's phone revealed that the date of this episode is January 14th, the same as its air date.
    • Coincidentally, this episode also aired on Kouhei Takeda's (Kazumi Sawatari's actor) 32nd birthday.
    • However, the day shown on the phone is Monday (月), which means this episode happened January 14th, 2019 in Build timeline. It seems like it is a production mistake that happened when they deliberately set the phone's date to match the airing date, but didn't notice the incorrect year.
  • Sento failed attempt to transform into Kamen Rider Cross-Z Charge mirrors Ryuga Banjo's failed attempt to transform into Kamen Rider Build in Episode 6.
  • When Grease introduces himself, music from Uchu Sentai KyurangerIcon-crosswiki is used.

DVD/Blu-ray releases

External links


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