

Gundam Build Fighters
Sei Iori is a Gunpla builder whose family runs a hobby shop in a small town. He aspires to be a Gunpla Battle champion like his father, but despite his exceptional building skills, he lacks the combat abilities to compete with other contestants. Then one day, he meets a mysterious boy named Reiji, who helps him improve his confidence in participating in Gunpla Battles. Together, Sei and Reiji battle their way to the 7th Gunpla Battle World Tournament.
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Top cast

Kazumi Togashi
Sekai Kamiki (voice)

Yuma Uchida
Yuuma Kousaka (voice)

Yui Makino
Fumina Hoshino (voice)

Ryo Hirohashi
Kaoruko Sazaki (voice)

Aya Endo
Mirai Kamiki (voice)
Frequently asked questions
Where can I watch Gundam Build Fighters online?
As of November 4, 2026, Gundam Build Fighters is available to stream on Crunchyroll in United States. Use the country selector above to check availability in other regions — streaming rights are licensed per country, so catalogues differ.
Is Gundam Build Fighters on Netflix?
No — Gundam Build Fighters is not currently on Netflix in any of the countries we track. In United States it streams on Crunchyroll instead.
Can I rent or buy Gundam Build Fighters online?
Our sources do not list a digital rental or purchase option for Gundam Build Fighters in United States right now.
In which countries can I stream Gundam Build Fighters?
As of November 4, 2026, Gundam Build Fighters is included with a streaming subscription (or free with ads) in Argentina, Brazil, Canada, Chile, Colombia, Germany, Italy, Mexico, Portugal, Russia, Spain, United Kingdom, and United States, among the countries we track.
Streaming availability last checked on November 4, 2026. Catalogues change frequently — data from TMDB and JustWatch.








