Dave Goelz
Steve Whitmire
Bill Barretta
Jerry Nelson
Brian Henson
Kevin Clash
Frank Oz
Jeffrey Tambor
F. Murray Abraham
Rob Schneider
Dave Goelz as Gonzo/Dr. Bunsen Honeydew/Waldorf/The Bird Man/Swedish Chef/Zoot (uncredited) (voice)
Steve Whitmire as Kermit the Frog/Rizzo the Rat/Beaker/Cosmic Fish #1/Bean Bunny/Beach Hippie (uncredited) (voice)
Bill Barretta as Pepe the Prawn/Bobo as Rentro/Johnny Fiama/Bubba the Rat/Cosmic Fish #2/Dr. Teeth/Rowlf (uncredited) (voice)
Jerry Nelson as Robin/Statler/Ubergonzo/Floyd (voice)
Brian Henson as Dr. Phil Van Neuter/Sal Minella/Talking Sandwich (voice)
Kevin Clash as Clifford (voice)
Frank Oz as Miss Piggy/Fozzie Bear/Animal/Sam the Eagle/Swedish Chef (hands) (voice)
Jeffrey Tambor as K. Edgar Singer
F. Murray Abraham as Noah
Rob Schneider as TV Producer
Josh Charles as Agent Barker
Ray Liotta as Gate Guard
David Arquette as Dr. Tucker
Andie MacDowell as Shelley Snipes
Kathy Griffin as Female Armed Guard