Rikiya Tomizono is a Japanese voice actor and actor born on September 16, 1998, in Hyōgo Prefecture. He began his entertainment career as a member of the groups High School Children and VOYZ Boy, which are part of the larger project produced by Yasushi Akimoto. His affiliation with these groups marked his entry into the industry, combining performance with music and idol activities.

Tomizono made his voice acting debut in 2019 with a leading role in the animated film Kimi dake ni Motetainda. In this film, he provided the voice for the character Kotarō Tojima. This debut role remains a primary credit in his voice acting filmography.

Beyond his voice work, Tomizono is also an active stage actor. His stage credits include prominent roles in productions such as the musical adaptation of Dramatical Murder, where he played the character Noiz, and Rusted Armors. He has also appeared in television dramas, including a role in the 2019 series Ore no Sukato, Doko Itta?. A significant part of his on-screen career includes his role as Sabimaru Tsuruhara in the 2023 tokusatsu series Kamen Rider Gotchard, a performance that also led to voice work in the related short anime series Gotchanime.

Tomizono is a member of the Japanese musical group UNiFY. His career demonstrates a recurring collaboration with the production of stage adaptations of video games and anime, and his work in Kamen Rider Gotchard connects his on-screen acting to voice performance within the same franchise. He has also collaborated with fellow voice actor Kaji Yuki on multiple projects.