Keiko Yamamoto (山本 圭子, Yamamoto Keiko; August 7, 1940 – April 18, 2024) was a Japanese voice actress and narrator from Osaka Prefecture. Many of her voice acting roles were older women, young boys, or tomboyish young girls. She is best known for her voice acting roles as the titular character in Tensai Bakabon, Hanako Hanazawa in Sazae-san, Sunakake Babaa in GeGeGe no Kitaro, Chikako in Himitsu no Akko-chan, the titular character in Ganbare!! Robocon, and Shōta Yamada in Chibi Maruko-chan. (Via Wikipedia)