Biography
Hiroki Matsumoto (松本 大輝, Matsumoto Hiroki, born March 29, 1999) is a Japanese actor from Sapporo, Hokkaido. He stands 182 cm tall and has blood type O. He is represented by Stardust Promotion.
His path to acting began unexpectedly: while studying to become a sports trainer, he was awarded the Grand Prize at the prestigious 31st Junon Superboy Contest in 2018. This recognition marked the start of his artistic career. He made his acting debut in 2019 with a role in the drama Rinshō Hanzaigakusha Himura Hideo no Suiri, and has since steadily built a presence in television and film. His breakthrough came in 2022, when he was cast as the lead in the series Ultraman Decker, playing Kanata Asumi—a role that connected him directly to the iconic tokusatsu franchise.
Beyond his screen work, Matsumoto has shown strong athletic ability, particularly in basketball, a sport in which he competed at the national level during his school years. His hobbies include watching films and collecting sneakers.
*** Not to be confused with the voice actor of the same name, also written 松本大輝, affiliated with 81 Produce.
Filmography
Cast Credits

Koifure ~Koibito Miman ga Choudo ii~
Character: Jo
TV • 2025

Six-Colored Time Machine
Character: Ryusei Kashiwagi
TV • 2025

JOFU ~Do Women Need Escorts?~
Character: Maruni
TV • 2025

Suicide Notes Laid on the Table
Character: Arashi Yokoyama
MOVIE • 2025

When It Rains, It Pours
Character: Kazuaki Fujisawa
TV • 2025

Mr. Sahara & Toki-kun
Character: Shinji Todo
TV • 2023

My Fave Is Mine
Character: Ginga
TV • 2023

Ultraman Decker Finale: Journey to Beyond
Character: Kanata Asumi
MOVIE • 2023

Ultraman Connection Presents: Tamashii Nations Special Streaming featuring Ultraman Trigger
Character: Kanata Asumi
MOVIE • 2022

Ultraman Decker
Character: Kanata Asumi
TV • 2022

Ultraman Decker Preview Special
Character: Kanata Asumi
MOVIE • 2022

The Final Lesson -Only Survivors Graduate
Character: Daichi Nagai
TV • TBA
Crew