Maggie Simpson Maggie's occasional speaking parts and other vocalisations 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. "The Simpsons" uses a floating timeline in which the characters do not physically age, and as such the show is assumed to be set in the current year.
The Simpsons (franchise) were added as cast members. In addition to the main cast, Pamela Hayden, Tress MacNeille, Marcia Wallace, Maggie Roswell, and Russi Taylor voice supporting characters. From 1999 to 2002, Maggie Roswell's characters were voiced by Marcia Mitzman Gaven. Karl Wiedergott has appeared in minor roles, but does not voice any recurring characters. Repeat "special guest" cast members include Albert Brooks, Phil Hartman, Jon Lovitz, Joe Mantegna, and Kelsey Grammer. "The Simpsons" was the Fox network's first TV series to rank among a season's top 30 highest-rated shows. While later seasons would focus on Homer, Bart was the lead character in