Mona Marshall (born Mona M. Ianotti on August 31, 1947) is an American voice actress. She is often cast in the role of a young boy, usually ones who are smart or detached or somewhat psychotic. Her roles have included parts in not only Japanese anime, but also in American cartoons as well. Mona Marshall has recently lent her voice to the talking bear Koby the Study Buddy. In recent times her most notable roles are that of playing Sheila Broflovski, Linda Stotch, and additional voices on the popular television show South Park. In the 1990s, she provided the voice of the Native American princess in Young Pocahontas which was released on VHS March 15,1995. Three months later, Disney's Pocahontas premiered in theaters.