Answer:
Comic Book Guy (no last name), Burns (Charles Montgomery), Carlson (Carl), Bouvier (Patty, Selma, Marge), Simpson (Homer, Bart, Marge, Lisa, Maggie, Abraham), Hibbert (Julius), Flanders (Todd, Rodd, Ned, Maude), Gumble (Barney), Krustofski (Herschel),
Krabappel (Edna), Itchy the Mouse (no last name), Prince (Martain), Muntz (Nelson), Nahasapeemapetiolon (Apu), Leonard (Lenny), Mann (Otto), Snowball I (no last name), Snowball II (no last name), Scratchy the Cat (no last name), Skinner (Seymour), Smithers (Waylon), Szyslak (Moe), Groundskeeper Willie (no last name), Wiggum (Ralph, Clancy), Van Houten (Millhouse, Craig), Terwillinger (Robert), Disco Stu (no last name), Gil (no last name) Miss Houver (no first name).