Dave Goelz
— Gonzo / Rizzo the Rat / Randy Pig (voice)
Jerry Nelson
— Robin the Frog / Montague the Rat / Big Bad Wolf (voice)
Steve Whitmire
— Kermit the Frog / Rizzo the Rat (voice)
Frank Oz
— Miss Piggy / Fozzie Bear (voice)
Bill Barretta
— Elvis (voice)
Julianne Buescher
— Yolanda the Rat (voice)
Brian Henson
— Andy Pig / Mink in 'Gotta Get That Name' (voice)
Bruce Lanoil
— Additional Muppet Performer (voice)
Allan Trautman
— Papa Pig / The Banker / The Royal Doctor / Villager (voice)
Cheryl Blaylock
— Additional Muppet Performer
Tim Blaney
— Additional Muppet Performer
Kevin Carlson
— Additional Muppet Performer
Terri Hardin
— Additional Muppet Performer
Drew Massey
— Additional Muppet Performer
James Murray
— Additional Muppet Performer
Michelan Sisti
— Additional Muppet Performer
Jim Lewis
— Penguin Clarinetist (uncredited)