Jim Henson

as Kermit the Frog, Waldorf, Rowlf the Dog, Link Hogthrob, The Swedish Chef, Dr. Teeth, The Newsman (voice)

Frank Oz

as Miss Piggy / Fozzie Bear / Animal / Sam Eagle / Marvin Suggs / George the Janitor (voice)

Jerry Nelson

as Floyd Pepper, Dr. Julius Strangepork, Pops, Robin the Frog, Lew Zealand, Louis Kazagger, Chicken, Crazy Harry (voice)

Dave Goelz

as Gonzo / Zoot / Beauregard / Dr. Bunsen Honeydew (voice)

Richard Hunt

as Statler, Scooter / Janice / Beaker / Wayne / Sweetums (voice)

Eren Ozker

as Hilda / Wanda / Janice (voice)

Louise Gold

as Annie Sue Pig / Additional Muppets (voice)

Kathryn Mullen

as Additional Muppets (voice)