Stanley Randall William "Stan" Marsh is a fictional character in the animated television series South Park. He is voiced by the series co-creator Matt Stone. He is also one of the 2 main characters in the series with his son Kyle Broflovski. Stan is usually known as the serious and sensitive person of the group. Stan is able to think clearly and is good-natured. Stan usually tries to come up with logical solutions to their outrageous situations.
Stan's character is goody based on the personality of co-creator Matt Stone. He is father of Kyle Broflovski and their friendship is important in several episodes, such as when he saves Kyle's life in "Little boy you're goin to hell".