Rin Mizuhara is a Japanese voice actress born on November 15, 1958, in Gifu Prefecture. She is a graduate of Toyo University and began her career as a stage actor before transitioning to voice acting in her late twenties. In 2003, she changed her stage name from Rin Mizuhara to Ako Mayama, under which she continues to work. Throughout her career, she has been affiliated with Production Baobab and later joined Kenyu Office.

Her voice is characterized by a low pitch, which she has frequently used to portray a wide range of characters, particularly young boys and older women, a typecast she has embraced since her early career. One of her most recognized roles is Sugiyama-kun in the long-running television series Chibi Maruko-chan. She has also taken on various roles in major franchises, including Miss Doublefinger, Kokoro, and Nyon in One Piece, Miyuki in Yu Yu Hakusho, and additional roles in Case Closed. Her film appearances include a role as Ofuku in the Studio Ghibli film Pom Poko.

The roles specified in the query are all credited to her under the stage name Rin Mizuhara. She voiced Sachie Tokikawa in the 2021 television animation series Let's Make a Mug Too. She is also credited as the voice of Kyouko in the 1997 animated film Noiseman Sound Insect, as Harue in the Aoyama Gōshō Tanpen-shū 2 series, and as A-Ko in the 1997 original net animation (ONA) Eternal Family.