Dan Castellaneta
Homer Simpson / Itchy / Barney / Abe Simpson / 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 (voice)
Acting
Julie Kavner
Marge Simpson / Selma Bouvier / Patty Bouvier (voice)
Acting
Nancy Cartwright
Bart Simpson / Maggie Simpson / Ralph / Nelson / Todd Flanders / TV Daughter / Woman on Phone (voice)
Acting
Yeardley Smith
Lisa Simpson (voice)
Acting
Hank Azaria
Professor Frink / Comic Book Guy / Moe / 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 / Wise Guy (voice)
Acting
Harry Shearer
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 (voice)
Acting
Pamela Hayden
Milhouse Van Houten / Jimbo Jones / Rod Flanders (voice)
Acting
Tress MacNeille
Sweet Old Lady / Colin / Mrs. Skinner / Nelson's Mother / Pig / Cat Lady / Female EPA Worker / G.P.S. Woman / Cookie Kwan / Lindsey Naegle / TV Son / Medicine Woman / Girl on Phone (voice)
Acting
Albert Brooks
Russ Cargill (voice)
Acting
Karl Wiedergott
Man / EPA Driver (voice)
Acting
Marcia Wallace
Edna Krabappel (voice)
Acting
Russi Taylor
Martin Prince (voice)
Acting
Maggie Roswell
Helen Lovejoy (voice)
Acting
Phil Rosenthal
TV Dad (voice)
Writing
Billie Joe Armstrong
Billie Joe Armstrong (voice)
Acting
Mike Dirnt
Mike Dirnt (voice)
Acting
Tré Cool
Tre Cool (voice)
Acting
Joe Mantegna
Fat Tony (voice)
Acting
Tom Hanks
Tom Hanks (voice)
Acting