Rex Banner is a character on The Simpsons. He appeared only in the episode in which Prohibition was legalized in Springfield. He was hired to enforce it, putting Clancy Wiggum out of a job. He is inable to smile and dresses in a 1920's detective fashion. Though he is a highly trained detective, he still couldn't catch the Beer Baron (Homer Simpson), who was sneaking beer into Moe's Tavern. Rex was catapulted out of town in the end.