Homer Simpson / Itchy / Barney / Grampa / Stage Manager / Krusty the Clown / Mayor Quimby / Mayor's Aide / Multi-Eyed Squirrel / Panicky Man / Sideshow Mel / Mr. Teeny / EPA Official / Kissing Cop / Bear / Boy on Phone / NSA Worker / Officer / Santa's Little Helper / Squeaky-Voiced Teen / Groundskeeper Willie

Marge Simpson / Selma Bouvier / Patty Bouvier

Bart Simpson / Maggie Simpson / Ralph Wiggum / Nelson Muntz / Todd Flanders / TV Daughter / Woman on Phone

Lisa Simpson

Professor Frink / Comic Book Guy / Moe Szyslak / Chief Wiggum / Lou / Carl / Cletus / Bumblebee Man / Male EPA Worker / Dome Depot Announcer / Kissing Cop / Carnival Barker / Counter Man / Apu / Drederick Tatum / Sea Captain / EPA Passenger / Robot / Dr. Nick Riviera / Wise Guy

Scratchy / Mr. Burns / Rev. Lovejoy / Ned Flanders / Lenny / Skull / President Arnold Schwarzenegger / Kent Brockman / Principal Skinner / Dr. Hibbert / Smithers / Toll Booth Man / Guard / Otto / Kang

Milhouse Van Houten / Rod Flanders / Jimbo Jones

Booberella / Sweet Old Lady / Colin / Agnes Skinner / Nelson's Mother / Pig / Crazy Cat Lady / Female EPA Worker / G.P.S. Woman / Cookie Kwan / Lindsey Naegle / TV Son / Medicine Woman / Girl on Phone

Russ Cargill

Man / EPA Driver

Mrs. Krabappel

Martin Prince

Helen Lovejoy

TV Dad

Green Day

Green Day

Green Day

Fat Tony

Tom Hanks