Kevin McCormick is the eldest child of Stuart and Carol McCormick. He is Kenny and Karen's older brother.
He never appears without the rest of his family or Kenny, and very little is known about him. He only has a speaking role in three episodes: "Chickenlover", "Chickenpox", and "The Poor Kid". He is often seen in the background with his brother or his family, usually at church or at Kenny's numerous funerals.
He is voiced by Trey Parker.