Back

Kazuki Yao

Voice Actor

Working under the agency Max Mix, Kazuki Yao is a veteran Japanese actor and narrator who voices Mounblutain in the One Piece anime.

Role: Voice Actor
Nationality: Japanese
Years Active: 1970-present
Text Size

One Piece Role

Kazuki Yao provides the Japanese voice of Mounblutain in the One Piece anime, part of a long career built on narration and character work across Japanese television.

Text Size

Career and Notable Roles

Born June 17, 1959, Yao has built a long career as an actor and narrator currently affiliated with the talent agency Max Mix, working across four decades in Japanese television and anime. He is married to fellow performer Natsuki Hayashi.

Share this resource
Mr. Popo Took Your Girl

Featured song

Mr. Popo Took Your Girl

Daddy Jim Headquarters makes R&B, mostly Dragon Ball so far. You should check it out.

Frequently Asked Questions

Who does Kazuki Yao voice in One Piece?

Kazuki Yao provides the Japanese voice of Mounblutain in the One Piece anime. The role is part of a long career built on narration and character work across Japanese television.

What agency represents Kazuki Yao?

Kazuki Yao is currently affiliated with the talent agency Max Mix. He continues his work there as an actor and narrator.

Who is Kazuki Yao married to?

Kazuki Yao is married to fellow performer Natsuki Hayashi. The pair share a background in Japanese entertainment alongside his four-decade voice acting career.

When was Kazuki Yao born?

Kazuki Yao was born on June 17, 1959. He has gone on to build a career spanning four decades in Japanese television and anime.

How long has Kazuki Yao worked in Japanese television and anime?

Yao has built his career across four decades, working since 1970 as an actor and narrator in Japanese television and anime. That longevity includes his role as Mounblutain in One Piece.

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.

Help Us Keep This Wiki Accurate

Daddy Jim Headquarters maintains this encyclopedia. If you spot an error, a translation issue, or something that doesn't look right, let us know.