Grizzly Shawn is one of the gay men who appeared in Flaming Moe. He frequently asked Moe if he'd come to gay events, such as Krusty's gay parade and a sing along. The name Grizzly Shawn probably stems from his hairy appearance and such gay men are called bears. He was supposedly aroused when Mr. Burns called 'first squeeze' for a lemon party.
He was later "adopted" by Julio and Grady. (Julio claimed that he and his partner had "already adopted a baby!" when they were asked to be the Simpsons children's guardians "The Changing of the Guardian", but Shaun appeared dressed up as a baby immediately after.)