Margaret "Maggie" Simpson is a cartoon character in the animated television series The Simpsons. She first appeared on television in the Tracey Ullman Show short "Good Night" on April 19, 1987. Maggie was created and designed by cartoonist Matt Groening while he was waiting in the lobby of James L. Brooks' office.
She received her first name from Groening's youngest sister. After appearing on The Tracey Ullman Show for three years, the Simpson family was given their own series on the Fox Broadcasting Company which debuted December 17, 1989. Maggie is the youngest child of Marge and Homer, and sister to Bart and Lisa. She is often seen sucking on her pacifier and, when she walks, she trips over her clothing and falls on her face (this being a running gag, being used much more in earlier seasons). Being an infant, she cannot talk. Therefore, she is the least seen and heard in the Simpson family. Maggie's squeaking and occasional speaking parts are currently provided by Nancy Cartwright, but she has also been voiced by guest stars James Earl Jones, Elizabeth Taylor and Jodie Foster, and by series regulars Yeardley Smith and Harry Shearer. Maggie has appeared in various media relating to The Simpsons – including video games, The Simpsons Movie, The Simpsons Ride, commercials and comic books – and has inspired an entire line of merchandise.