Kamen Rider Build The Unstoppable Hazard (Season 1, Episode 21)
TV-PG
TV Episode | 24 min | Action, Adventure, Comedy

Primary photo for The Unstoppable Hazard

Kamen Rider Build

The Unstoppable Hazard (Season 1, Episode 21)

TV-PG

TV Episode | 24 min | Action, Adventure, Comedy

Despite knowing the risks, Sento uses the Hazard Trigger to empower himself against Kazumi's three subordinates. After losing his consciousness and killing one of them, Sento is struck with guilt and refuses to keep fighting, until Soichi ...See moreDespite knowing the risks, Sento uses the Hazard Trigger to empower himself against Kazumi's three subordinates. After losing his consciousness and killing one of them, Sento is struck with guilt and refuses to keep fighting, until Soichi gives him an alternative. See less

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Cast	+ Add Cast
18 cast members

Name	Known for
Atsuhiro Inukai Sento Kiryu / Kamen Rider Build Sento Kiryu / Kamen Rider Build See fewer	Kamen Rider Ex-Aid: True Ending (2017)
Eiji Akaso Ryuga Banjo / Kamen Rider Cross-Z Ryuga Banjo / Kamen Rider Cross-Z See fewer	Kamen Rider Heisei Generations Final: Build & Ex-Aid with Legend Riders (2017)
Kaho Takada Misora Isurugi Misora Isurugi See fewer	Kamen Rider Build (2017)
Kôhei Takeda Kazumi Sawatari / Kamen Rider Grease Kazumi Sawatari / Kamen Rider Grease See fewer	Floating Holidays (2024)
Ryôko Gi Yoshiko Tajimi Yoshiko Tajimi See fewer	Kamen Rider W (2009)
Tetsuo Kanao Blood Stalk (voice) Blood Stalk (voice) See fewer	Kamen Rider Build (2017)
Bucky Koba Narration Narration See fewer	Kamen Rider Build (2017)
Eishin Akaba / Castle Hard Smash Akaba / Castle Hard Smash See fewer	The Outsider (I) (2018)
Tateto Serizawa Aoba / Stag Hard Smash Aoba / Stag Hard Smash See fewer	Perfect Days (2023)
Takuya Yoshimura Kiba / Owl Hard Smash Kiba / Owl Hard Smash See fewer	Say Goodbye If You Love Me (2022)
Tarô Nakatani Masuzama Masuzama See fewer	Kamen Rider Build (2017)
Kenya Matsuki TV Announcer TV Announcer See fewer	Alice in Borderland (2020)
Keisuke Hara Ring Announcer Ring Announcer See fewer	Revolver Lily (2023)
Meikyô Yamada Taizan Himuro Taizan Himuro See fewer	Kamen Rider Build (2017)
Yukari Taki Sawa Takigawa Sawa Takigawa See fewer	Kamen Rider Build (2017)
Yasuyuki Maekawa Soichi Isurugi Soichi Isurugi See fewer	Kamen Rider Build (2017)
Katsuya Kobayashi Build Driver (voice) (as KORBY) Build Driver (voice) (as KORBY) See fewer	Kamen Rider Build (2017)
Norio Wakamoto Sclash Driver (voice) Sclash Driver (voice) See fewer	Ninja Scroll (1993)