"Sour Cream" is a minor character and resident of Beach City that made his debut in "Lars and the Cool Kids". He first appears in the episode "Frybo". He is one of "The Cool Kids". In "Joy Ride", it is hinted that his stepfather is Yellowtail, and in "Onion Friend" Sour Cream is revealed to be Onion's older half-brother, Yellowtail's step-son, and Vidalia's son