“Hi, Principal Skinner! Hi, Super Nintendo Chalmers!”

Who is Ralph Wiggum?
Ralph Wiggum, is the unintentional class clown of Springfield Elementary. He is the son of Chief Wiggum, the equally absent-minded, bumbling police officer, and has a reputation for saying things both irrelevent and unintelligent. He is known to have a crush on Lisa, and has an imaginary leprechaun friend who occasionally tells him to start fires.
The Simpsons Archive: The Ralph Wiggum File