Jim Henson

as Kermit the Frog / Ernie / Dr. Teeth / Rowlf / Link Hogthrob / The Newsman / The Swedish Chef / Waldorf / Mahna Mahna / Harry the Hipster / Self

Frank Oz

as Fozzie Bear / Miss Piggy / Sam the Eagle / Bert / Animal / Grover / Cookie Monster / Marvin Suggs (voice)

Jerry Nelson

as Camilla / Count von Count / Crazy Harry / Dr. Julius Strangepork / Lew Zealand / Robin the Frog / Louis Kazagger / Sgt. Floyd Pepper / Two-Headed Monster (Frank) / Gobo Fraggle

Richard Hunt

as Beaker / Scooter / Statler / Sweetums / Janice / Two-Headed Monster (Stein) / Tug Monster (voice)

Dave Goelz

as The Great Gonzo / Dr. Bunsen Honeydew / Beauregard / Zoot / Uncle 'Travelling' Matt Fraggle / Boober Fraggle (voice)

Steve Whitmire

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

Caroll Spinney

as Big Bird / Oscar the Grouch (voice)

Julie Andrews

as Self (archive footage)

Harry Belafonte

as Self (archive footage)

Carol Burnett

as Self (archive footage)