Character(s):
Homer Simpson; Bart Simpson; Lisa Simpson; Maggie Simpson; Santa's Little Helper; Snowball II; Dolph; Janey Powell; Jimbo Jones; Martin Prince; Milhouse Van Houten; Nelson Muntz; Ralph Wiggum; Sherri; Terri; Edna Krabappel; Groundskeeper Willie; Otto Mann; Principal Skinner [Seymour Skinner]; Professor Frink; Stephen Hawking