George Louis Costanza is a character in the American television sitcom Seinfeld (1989–1998), played by Jason Alexander. He has variously been described as a "short, stocky, slow-witted, bald man" (by Elaine Benes and Costanza himself), and "Lord of the Idiots" (by Costanza himself). George and Jerry were junior high school friends and remained friends afterwards. He is friends with Jerry Seinfeld, Cosmo Kramer, and Elaine Benes. George appears in every episode except "The Pen" (third season).