Millan appears in the episode "Tsst" where he is hired by Liane Cartman to help improve her son Eric's behavior. Unlike assorted nannies who were hired to discipline Cartman (all of whom were destroyed mentally or emotionally by him), Cesar's approach proves to be the most successful, as he treats Cartman like a dog, rather than a human being. Mrs. Cartman becomes so grateful for his help that she begins propositioning Cesar for a deeper relationship. When Cesar reminds her that he is merely the