Hiroshi Okamoto
Voice ActorHiroshi Okamoto is a Japanese voice actor from Nara Prefecture who supplies supporting voices for the One Piece anime and has worked in the industry since the early 2000s.
One Piece Role
In the Japanese version of One Piece, Okamoto voices Unigaro, a warrior from the Tontatta Kingdom, as well as one of the Charlotte Decuplets, the youngest sons within Big Mom's sprawling family. Both parts are supporting roles rather than lead characters, fitting his broader career of filling out large ensemble casts.
Career and Notable Roles
Okamoto started working as a voice actor in 2003 and belongs to Aoni Production, one of Japan's largest talent agencies for anime performers. He studied at Momoyama Gakuin University before moving into voice work, and has spent his two-decade career largely in supporting and ensemble parts across Japanese anime productions.
Frequently Asked Questions
Who does Hiroshi Okamoto voice in One Piece?
In the Japanese version of One Piece, Hiroshi Okamoto voices Unigaro, a warrior from the Tontatta Kingdom, and one of the Charlotte Decuplets, the youngest sons in Big Mom's family. Both are supporting roles that fit his broader career of filling out large ensemble casts.
Where did Hiroshi Okamoto study before becoming a voice actor?
Okamoto studied at Momoyama Gakuin University before moving into voice work. He has spent his two-decade career largely in supporting and ensemble roles across Japanese anime.
When did Hiroshi Okamoto begin working as a voice actor?
Okamoto started working as a voice actor in 2003, marking the beginning of a career that now spans more than two decades. That career has centered mainly on supporting and ensemble anime parts, including his One Piece roles.
Where is Hiroshi Okamoto from?
Hiroshi Okamoto is a Japanese voice actor born in 1977 in Nara Prefecture. He has worked in the anime industry since the early 2000s, primarily voicing supporting characters.
What talent agency does Hiroshi Okamoto belong to?
Okamoto belongs to Aoni Production, one of Japan's largest talent agencies for anime performers. The agency represents many voice actors who, like Okamoto, work extensively in supporting and ensemble roles across Japanese television anime.
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Sources & Information
This content is original writing by Daddy Jim Headquarters based on the One Piece anime series, manga, and official materials. Episode and chapter references are cited where applicable.
Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:
- Movie pages: theatrical posters and key visuals, credited to Toei Animation and Toei Company.
- Game pages: official box art for the One Piece console and mobile games, credited to Bandai Namco.
- Manga chapter pages: Jump Comics volume covers, credited to Shueisha and Eiichiro Oda.
Official resources:
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