Keiko Yokozawa.

better known by the stage name Keiko Yokozawa (横沢 啓子 Yokozawa Keiko), is a Japanese voice actress. She is most known for the roles of Dorami (Doraemon), Mami Sakura (Esper Mami), Benio Hanamura (Haikara-san ga Tōru), and Sheeta (Castle in the Sky).