Shelly Marsh is a character in the series South Park.
She is Randy and Sharon's daughter and Stan's older sister, and is named for Trey Parker's older sister. Shelly has been voiced by Mary Kay Bergman, Mona Marshall, Eliza Schneider, and April Stewart. She usually calls Stan and his friends "Turds" and beats up Stan regularly.
- Being a bitch
- Eric Cartman
- Everyone and Everything, except herself and Eric Cartman
Shelly was killed by an emotionless Dark Tails. Autopsies have shown no tissue damage, or reason for the heart to stop. The only damage is electrosis to the fear regions of the brain, possibly pointing to a scary dream at the tast moments of his life.