Big Bird / Oscar the Grouch / Bruno the Trashman (voice)
Kermit the Frog / Ernie (voice)
Cookie Monster / Bert / Grover / Lavender Boy / Monster (voice)
Gladys the Cow / Additional Muppets / Grouches (voice)
Grouch Diner Patron / Little Girl / Additional Muppets (voice)
Count von Count / Herry Monster / Additional Muppets (voice)
Grouch Cook
Grouch Waitress
State Trooper
Newscaster
Sid Sleaze
Truck Driver
Sam Sleaze
Mommy Dodo (voice)
Daddy Dodo (voice)
Marie Dodo (voice)
Donnie Dodo (voice)
Miss Finch (voice)
Linda
Luis
Susan
Maria
Bob
Gordon
Olivia (as Alaina Reed)
Willy
Ruthie
Floyd
Boy with Apple
Rescue Boy
Rescue Girl
Kid at Map
Tanya
Airline Announcer
Mr. Snuffleupagus / Telly Monster / Board of Birds / Grouch Diner Patron (voice)
Mr. Snuffleupagus (back half)
Barkley (voice) (as Fred Garbo Garver)
Miss Finch
Mommy Dodo / Board of Birds (voice)
Daddy Dodo (as Gordon Robertson)
Donnie Dodo
Marie Dodo
Honker / Board of Birds (owl)
Madame Chairbird (voice)
Board of Birds (voice) (as Robert Stutt)
Board of Birds (voice)
Board of Birds (voice) (as Robert Mills)
Additional Muppet Performer (voice) (as Frank Muschkullett)
Additional Muppet Performer / Honker (voice)
Additional Muppet Performer (voice)
Additional Muppet Performer (voice) (as Martine Carrier)
Additional Muppet Performer (voice) (as Michelle Frey)
Additional Muppet Performer / Board of Birds (sparrow) (voice)
Additional Muppet Performer / Grundgetta (voice)
Blue Bird of Happiness Audience Member (uncredited)
Extra (uncredited)
Postman (uncredited)
Little Girl (uncredited)
Grouch Anthem Announcer (voice) (uncredited)
Trailer Announcer (voice) (uncredited)