Jim Henson

Kermit the Frog / Rowlf the Dog / Dr. Teeth / Swedish Chef / Waldorf / Ernie / Self

Frank Oz

Miss Piggy / Fozzy Bear / Animal / Sam the Eagle / Bert / Grover / Cookie Monster

Dave Goelz

Gonzo / Dr. Bunsen Honeydew / Zoot / Beauregard / Boober Fraggle

Jerry Nelson

Robin the Frog / Camilla the Chicken / Floyd Pepper / Lew Zealand / Pops / The Count / Gobo Fraggle / Herry Monster

Richard Hunt

Scooter / Janice / Statler / Beaker / Gladys the Cow / Two-Headed Monster / Snowman (voice)

Kathryn Mullen

Mokey Fraggle (voice)

Steve Whitmire

Turkey / Rizzo the Rat / Wembley Fraggle / Sprocket the Dog / Lips (voice)

Caroll Spinney

Big Bird / Oscar the Grouch (voice)

Karen Prell

Red Fraggle / Maureen the Mink (voice)

David Rudman

Miss Piggy's Photographer (voice)

Gerard Parkes

Doc

Terry Angus

Additional Muppet Performer (uncredited)

Debra Spinney

Additional Muppet Performer (uncredited)

Fred Stinson

Additional Muppet Performer (uncredited)