Sam Star is the older sister of Patrick Star and the daughter of Herb Star and Margie Star. She first appears in the episode "Big Sister Sam."
Sam is pink with red dots like her brother and parents, but is noticeably larger in size and height. She has black hair, with one side put into a pigtail. She wears a matching blue top and skirt with a lime green floral pattern on it. Sam is much less intelligent than Patrick, as she speaks in the third-person constantly and pronounces words in a different manner, aling with showing high hostility to anyone she deems a threat to Patrick.