On the show King of the Hill, Luanne Platter is Peggy and Hank Hill's niece, daughter of Hoyt Platter, Peggy's brother. Luanne moves in with the Hills in the show's very first episode. At the end of the episode, Luanne tells Hank that her mother stabbed her father with a fork and that their trailer home has been repossessed.
Luanne was memorably voiced by the late Brittany Murphy, who died under bizarre circumstances of pneumonia and anemia. Roughly five months later, her husband died of the same ailements in the same home. Both deaths were judged to be from natural causes and Murphy's mother remained in the home-- although she later filed suit against the home's builder alleging that toxic mold was responsible for the couple's untimely deaths.