Ralph Wiggum is a recurring character on the animated series "The Simpsons", voiced by Nancy Cartwright. The son of Police Chief Wiggum, Ralph is a classmate of Lisa Simpson and an odd child noted for his frequent non-sequiturs and bizarre behavior. His lines range from nonsensical, or bizarre interpretations of a current event, to profound statements that go over people's heads; and his behavior varies between blissfully unaware, to dim-witted, to awkwardly spontaneous, even occasionally straightforward. The very nature of the character has undergone differing interpretations over the years and within various media.