Dan Castellaneta

Narrator (voice)

Slick Moeller

Tiny Werner

Man in Chair

Pete / Funeral Director

Steve Michaels

Patrick Senior

Diane's Teacher (uncredited)

Zabar (voice)

Auctioneer / Horse Trader (voice)

Maitre D'

Grandpa Phil (voice) / Big Arnold (voice) / Nick Vermicelli (voice) / Grandpa Phil / Nick Vermicelli (voice) / Delivery Man (voice) / Grandpa Phil / Reporter (voice) / Animal Control Officer (voice) / Grandpa Phil / Nolo (voice) / Grandpa Phil / Grandpa Phil's Father / Jolly Olly Man (voice) / Grandpa Phil / Cop #1 (voice) / Grandpa Phil / Chicken Man (voice) / Grandpa Phil / Judge (voice)

Brad

Mr. Jumba (voice)

Dracula (voice)

Hershowitz / Jury Foreman / Press (voice) / Jonathan (voice)

Dr. Kinny

Homer Simpson / Barney Gumble (voice)

Officer McBride / Police Officer (voice)

Andrew Preston

Bryan

Guard (voice) / Kobra Commando (voice) / Mr. Groote/Mr. Brooks (voice)

Minister / Guard (voice) / Kaznian Astronaut / Socialite / Photographer (voice)

The Robot Devil (voice)

Mr. Geminini (voice) / Dr. Drakken's Henchmen (voice) / Private Cleoutus Dobbs / Baxter (voice)

Earl (voice) / Earl / Ice Cream Vendor (voice) / Earl / Jimmy (voice) / Earl / Lineman / Old Man (voice) / Earl / Principal (voice) / Earl / Cootie Victim (voice) / Earl / Astronaut #1 / Pimply Kid (voice) / Earl / Horse (voice) / Earl / Ed / Thug (voice) / Earl / Show Announcer (voice) / Earl / Kid #2 (voice) / Earl / Bully Twin #2 (voice) / Earl / Judge (voice) / Earl / Minister (voice) / Earl / Doctor (voice) / Earl / Man #3 (voice) / Earl / Hat Guy (voice) / Earl / Neighbour (voice) / Earl / Janitor #2 (voice)

Jeffries (voice) / Harvey (voice)

Wesker / Scarface (voice) / Scarface (voice)

Animated Babysitter (voice)

Priest (voice)

Homer Simpson / Barney Gumble / Sideshow Mel / Happy / Grumpy / Donald Duck / Winnie the Pooh (voice)

Genie (voice)

Grandpa 'Steely' Phil / Nick Vermicelli (voice)

Guard #1 (voice)

Megavolt (voice) / Loudspeaker Announcer (voice) / Megavolt / Elmo Sputterspark (voice) / Throttle (voice)

Homer (voice) / Ticket salesman (voice) / Additional Voice Talent (voice) / Boney / Bureauocrates (voice) / Homer / Nectar guy (voice) / Bureauocrates (voice)

Mr. Mysterio / Woodenleg Wally (voice)

Tall Customs Dog / Angel Dog #1 (voice)

Rory O'Grady

Mr. Thickly (voice)

Dr. Harvat

Prince Wudolph (voice) / Dr. Zibaldo (voice)

Peter Oliver

Earl / Janitor #2 (voice) / Earl (voice) / Earl / Minister (voice)

Ray Winters

Jonathan / Phone Caller / Sailing Instructor (voice)

Commissioner Jerry Salerno

Grandpa (voice)

Marty

Stan

Gus the Doorman

Lazaar (voice)

Baseball Coach (voice)

Man Test Driving Car

George Wexler

Mittens (voice)

Brian

Dr. McNally

Homer Simpson (voice)

Dr. Milton Hastings

Needum Taylor

Eugene Fisher

Mole King (voice)

Eddie Day

Partlow

Dave Bishop (voice) / Mr. Bishop (voice)

Homer Simpson (voice)

Ted Boseman

BoE Agent #2 (voice)

Homer Simpson (voice)

Homer Simpsley (voice)

Voodoo Man / Muck Luck (voice)

Homer Simpson (voice)

David Champion / Homer Simpson

Gil (voice)

AP-99 (voice) / Brain Pod #13 (voice) / Hunter #1 / Hunter #2 / Lackey / Casey Kasemish DJ (voice) / Robot Sentry 1 / Robot Sentry 2 (voice) / Mr. Zoop / Alnip (voice) / Senator Banda / Garron / Nifty Joe (voice) / Slam-bot / Fussy-Boy (voice) / Resort Manager / Alien / Captain Alien (voice)

Homer Simpson (voice)

Duke Yipkowski (voice)

Stretch (voice)

Homer Simpson / Barney Gumble (voice)

Homer Simpson / Grampa Simpson (voice)

Walter Diparko

Phil

The Postman (voice)

Bumpkin

Jim Orr

Emmett Brown (voice)

Homer Simpson (voice)

Dick

Walt

Boris / Captain Howdy / Coluans (voice)

Homer Simpson (voice) (uncredited)

Ralph DaVolio

Iron Shoes / Priest (voice)

De Mille

Earthworm Jim (voice)

Dr. Harvey (voice)

Stewart (voice)

Alan Winsdale

Mr. Horner / Franklin the Frog (voice)

Dunkirque (voice)

Chula (voice)

George Agrande

Gary

Homer Simpson / Aristotle Amadopolis (voice)

Aaron Spelling

Homer (voice)

Count Dracula (voice)

Homer Simpson / Abraham 'Grampa' Simpson (voice)

Homer Simpson

Homer Simpson / Willie / Grampa Simpson/ Kodos/ Various (voice)

Aaron Spelling

Genie (voice)

Milt

Sven Jorgensen

Sam

Salesman

Megavolt (voice)

Homer Simpson (voice) (uncredited)

Professor Crank (voice)

Dr. Seymour

Homer Simpson (voice) (segment "Monster in the Mirror") (uncredited

Neal

Darian Ferguson

Homer Simpson (voice)

Gordon Johnson/Bryan Lynn

Megavolt (voice)

Human Cannonball

Grandpa Phil (voice)

Various Characters

Morty / Bank Manager

Homer

Agent

Grandpa (voice)

Dr. Emmett Brown (voice)

Dan the Bookie

Voodoo Man (voice)

Wild Bill Hickok / Clerk / Cheyenne #2 (voice)

Homer Simpson / Grampa Simpson (voice)

Warren Morris

Comet / Blitzen (voice)

Homer / Grandpa

Nicholas LaPorte (voice)

Megavolt (voice)

Homer Simpson / Santa's Little Helper / Krusty the Clown / Grampa Simpson / Barney Gumble / Hans Moleman (voice)

Homer Simpson (voice) (uncredited)

Homer Simpson (voice)

Homer Simpson (voice)

Homer Simpson / B.F. Sherwood (voice)

Groundskeeper Willie