Joe Dirt (David Spade) is a custodian who had a poor upbringing, after he was left behind by his parents at the Grand Canyon and left to fend for himself. As a baby, he had a mullet wig implanted because the top of his skull never formed.
In King of the Hill, Luanne Platter (voiced by Brittany Murphy) is Hank and Peggy Hill’s niece. After her mom stabs her dad with a fork and their trailer home gets repossessed, she moves in with the Hills. She sometimes aspires to be a hair stylist, but is mostly lazy.