|Hair||Long, Straight, Brown|
|Occupation||Baby Sitter, Student|
|Debut Episode/Fic||"An Elephant Makes Love to a Pig"|
Please visit her article on the South Park Archives for more information.
Shelly Marsh wears a grayish-white shirt and pink pants. She has long, brown hair and bangs. She has bad dental problems and has to wear orthodontic head gear, giving her a very unappealing appearance. Because of that, she is usually scowling or frowning. She has a distinct adenoidal, slurred voice, where she breathes heavily through her mouth and nose, and lisps.
Shelly Marsh is filled with a lot of anger and hatred, mostly caused by the head gear she has to wear. Her favorite way to vent this anger and hate is to beat up on her younger brother, Stan. However, Shelly has also been found to show compassion for her little brother Stan (usually after he plays the Brother-Sister-Family Card) when all other choices have been exhausted. A perfect example of this is the episode "Preschool" where Stan and the others are threatened to be killed by Trent Boyett, Shelly vows to protect her little brother because killing him is her job. She insists however that Stan come clean about the lies that made Trent want to kill him in the first place showing that Shelly also cares about the way Stan is growing up and tries to teach him how to be a responsible person.