Mona Marshall (born August 31, 1947) is a American voice actress. Her roles have included parts in Japanese anime and American cartoons, including South Park. She has portrayed the characters of Sheila Broflovski, Linda Stotch, and various other characters since 2000. She also voiced Wendy Testaburger at some point according to the South Park Studios FAQs.
Mona Marshall began voicing various South Park characters in 2000, and continues to voice several to this day.