Keiko Yamamoto, a Japanese voice actress hailing from Osaka Prefecture, voiced Keroko in One Piece; she often played older women, young boys, and tomboyish girls throughout her career.
Keiko Yamamoto voiced Keroko in the Japanese version of One Piece. The part fit within her long-standing niche of playing older women, young boys, and tomboyish girls across a broad range of anime productions.
Born in Osaka Prefecture in 1940, Yamamoto built a decades-long voice acting career around the same type of roles she brought to Keroko, frequently cast against her own age or gender for young boys and spirited tomboy characters. She continued working in the industry until her death in 2024.

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Keiko Yamamoto voiced Keroko in the Japanese version of One Piece. The part fit within her long-standing niche of playing older women, young boys, and tomboyish girls.
Yamamoto built a decades-long voice acting career around older women, young boys, and tomboyish girls. She was frequently cast against her own age or gender for these parts.
Keiko Yamamoto was born in Osaka Prefecture in 1940. She went on to build a decades-long career in Japanese voice acting.
Keiko Yamamoto continued working in the industry until her death in 2024. Her career, built around a distinctive niche of roles, spanned decades.
Keiko Yamamoto was a Japanese voice actress from Osaka Prefecture who voiced Keroko in One Piece and specialized in playing older women, young boys, and tomboyish girls. She worked in the industry until her death in 2024.
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.
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