Jason Segel
Gary
Amy Adams
Mary
Chris Cooper
Tex Richman
Rashida Jones
CDE Executive
Steve Whitmire
Kermit / Beaker / Statler / Rizzo / Link / Newsman (voice)
Peter Linz
Walter (voice)
Eric Jacobson
Miss Piggy / Fozzie / Animal / Sam Eagle / Marvin Suggs (voice)
Dave Goelz
Gonzo / Honeydew / Zoot / Beauregard / Waldorf (voice)
Bill Barretta
Swedish Chef / Rowlf / Teeth / Pepe / Bobo / Muppet Gary (voice)
David Rudman
Scooter / Janice / Miss Poogy / Wayne (voice)
Matt Vogel
Pepper / Camilla / Sweetums / Robot / Deadly / Harry (voice)
Alan Arkin
Tour Guide
Bill Cobbs
Grandfather
Zach Galifianakis
Hobo Joe
Ken Jeong
Punch Teacher Host
Jim Parsons
Human Walter
Eddie Pepitone
Postman
Kristen Schaal
Moderator
Sarah Silverman
Greeter
Eddie 'Piolin' Sotelo
TV Executive
Raymond Ma
Elderly Asian Man
Shu Lan Tuan
Elderly Asian Woman
Donald Glover
Junior CDE Executive
Dahlia Waingort
TV Executive
Jonathan Palmer
Reporter One
Don Yanan
Reporter Two
Michael Albala
TV Executive
Julia Marie Franzese
Punch Teacher Kid
Gunnar Smith
Gary Age 6
Justin Marco
Gary Age 13
Cameron Kasal
Laughing Kid
Justin Tinucci
Laughing Kid
Alex Long
Laughing Kid
Aria Noelle Curzon
Waitress
Emily Blunt
Miss Piggy's Receptionist
James Carville
James Carville
Leslie Feist
Smalltown Resident
Whoopi Goldberg
Whoopi Goldberg
Selena Gómez
Selena Gomez
Dave Grohl
Animool
Neil Patrick Harris
Neil Patrick Harris
Judd Hirsch
Judd Hirsch
John Krasinski
John Krasinski
Rico Rodriguez
Rico Rodriguez
Mickey Rooney
Smalltown Resident
Tyler Bunch
Fozzie Moopet / Thog / Additional Muppet Performer (voice)
Bruce Lanoil
Additional Muppet Performer (voice)
Michelan Sisti
Additional Muppet Performer (voice)
Paul McGinnis
Additional Muppet Performer (voice)
David Alan Barclay
Additional Muppet Performer (voice)
Tim Blaney
Additional Muppet Performer (voice)
Kevin Carlson
Additional Muppet Performer (voice)
Leslie Carrara-Rudolph
Additional Muppet Performer (voice)
Alice Dinnean
Afghan Hound / Wanda / Additional Muppet Performer (voice)
BJ Guyer
Additional Muppet Performer (voice)
Tanya Haden
Additional Muppet Performer (voice)
James Murray
Additional Muppet Performer (voice)
Michael Oosterom
Additional Muppet Performer (voice)
Karen Prell
Additional Muppet Performer (voice)
Mike Quinn
Additional Muppet Performer (voice)
Chase Woolner
Additional Muppet Performer (voice)
Jack Black
Jack Black (uncredited)
Mike Carlucci
Scout Troop Leader (uncredited)
Jerry Nelson
Telethon Announcer (voice) (uncredited)
