Jim Henson

Kermit the Frog / Rowlf / Dr. Teeth / Waldorf / Doc Hopper's Men / Link Hogthrob / Swedish Chef (voice)

Frank Oz

Miss Piggy / Fozzie Bear / Animal / Sam the Eagle / Doc Hopper's Men / Marvin Suggs / Swedish Chef (hands) / Motorcycle Guy (voice)

Jerry Nelson

Floyd Pepper / Robin the Frog / Crazy Harry / Lew Zealand / Camilla / Dr. Bunsen Honeydew (assistant) (voice)

Richard Hunt

Scooter / Statler / Janice / Sweetums / Beaker / Fozzie Bear (assistant) (voice)

Dave Goelz

The Great Gonzo / Dr. Bunsen Honeydew / Zoot / Doglion / Iraqian in El Sleezo Cafe / Pig (voice)

Charles Durning

Doc Hopper

Austin Pendleton

Max

Edgar Bergen

Himself / Charlie McCarthy (voice)

Milton Berle

Mad Man Mooney

Mel Brooks

Professor Max Krassman

James Coburn

El Sleezo Cafe Owner

Dom DeLuise

Bernie the Agent

Elliott Gould

Beauty Contest Compere

Bob Hope

Ice Cream Vendor

Madeline Kahn

El Sleezo Patron

Carol Kane

"Myth"

Cloris Leachman

Lord's Secretary

Steve Martin

Insolent Waiter

Richard Pryor

Balloon Vendor

Telly Savalas

El Sleazo Tough