| Jim Henson |
Kermit the Frog, Waldorf, Rowlf the Dog, Link Hogthrob, The Swedish Chef, Dr. Teeth, The Newsman (voice) |
| Jerry Nelson |
Floyd Pepper, Dr. Julius Strangepork, Pops, Robin the Frog, Lew Zealand, Louis Kazagger, Chicken, Crazy Harry (voice) |
| Dave Goelz |
Gonzo / Zoot / Beauregard / Dr. Bunsen Honeydew (voice) |
| Frank Oz |
Miss Piggy / Fozzie Bear / Animal / Sam Eagle / Marvin Suggs / George the Janitor (voice) |
| Eren Ozker |
Hilda / Wanda / Janice (voice) |
| Louise Gold |
Annie Sue Pig / Additional Muppets (voice) |
| Karen Prell |
Additional Muppets (voice) |
| Brian Muehl |
Additional Muppets (voice) |
| Richard Hunt |
Statler, Scooter / Janice / Beaker / Wayne / Sweetums (voice) |
| Kathryn Mullen |
Additional Muppets (voice) |
| Steve Whitmire |
Additional Muppets (voice) |