Chie Kōjiro (神代 知衣, Kōjiro Chie) is a Japanese voice actress. She was previously affiliated with Mausu Promotion and Production Baobab, and is now affiliated with 81 Produce. She is best known as the Japanese voice of Lisa Simpson, as well as Percy the Small Engine in the Japanese dub of Thomas & Friends beginning with Series 9, succeeding Chisato Nakajima.
Source: “Chie Kōjiro”, English Wikipedia (CC BY-SA 4.0), excerpt