Lady Gaga as Self

Elton John as Self

Joseph Gordon-Levitt as Self

Kristen Bell as Self

RuPaul as Self

Steve Whitmire as Kermit the Frog, Beaker, Rizzo the Rat, Statler, Lips (voice)

Eric Jacobson as Miss Piggy, Fozzie Bear, Animal, Sam the Eagle (voice)

Dave Goelz as The Great Gonzo, Dr. Bunsen Honeydew, Waldorf, Zoot (voice)

Bill Barretta as Pepe, The Swedish Chef, Rowlf, Dr. Teeth, Bobo, Big Mean Carl

David Rudman as Scooter, Janice (voice)

Matt Vogel as Floyd Pepper, Lew Zealand, Camilla the Chicken (voice)

Peter Linz as Walter (voice)

James Murray as Additional Muppet Performer (voice)

Kevin Carlson as Additional Muppet Performer (voice)

Tim Blaney as Additional Muppet Performer (voice)

Julianne Buescher as Additional Muppet Performer (voice)

Amanda Balen as Dancer

Graham Breitenstein as Dancer

Montana Efaw as Dancer

Kevin Frey as Dancer

Knicole Haggins as Dancer

Vincent Hardison as Dancer

David Masterson as Dancer

Ian McKenzie as Dancer

Sloan-Taylor Rabinor as Dancer

Víctor Rojas as Dancer

Nathan Danforth as Additional Muppet Performer

Dorien Davies as Additional Muppet Performer

Alice Dinnean as Additional Muppet Performer

Bruce Lanoil as Additional Muppet Performer

Paul McGinnis as Additional Muppet Performer

Michael Oosterom as Additional Muppet Performer

Brett O'Quinn as Additional Muppet Performer

Mike Quinn as Additional Muppet Performer

Michelan Sisti as Additional Muppet Performer

David Skelly as Additional Muppet Performer

Art Vega as Additional Muppet Performer

Ryan Dillon as Elmo

Tom Kane as Announcer (voice)

Amy Mack as Additional Muppet Performer

Calvin Vo as Additional Muppet Performer