 During the show's first 58 episodes, Cartman and the other main characters are in the third grade, after which they move on to the fourth grade.He is raised as an only child by Liane Cartman, a promiscuous single mother.In "Cartman's Mom Is Still a Dirty Slut" (1998), Liane Cartman is said to be a hermaphrodite and the father of Cartman who did not know the woman who gave birth to Cartman.