Gonzo / Bunsen Honeydew / Waldorf / The Birdman (voice)
Kermit the Frog / Rizzo the Rat / Beaker / Cosmic Fish #1 / Rainbow / Miss Piggy (assistant) (voice)
Pepe the Prawn / Bobo as Rentro / Johnny Fiama / Bubba the Rat / Cosmic Fish #2 (voice)
Robin / Statler / Ubergonzo (voice)
Dr. Phil Van Neuter / Sal Minella (voice)
Clifford (voice)
Miss Piggy / Fozzie Bear / Animal / Sam the Eagle (voice)
K. Edgar Singer
Noah
TV Producer
Agent Barker
Gate Guard
Dr. Tucker
Shelley Snipes
Female Armed Guard
General Luft
Man in Black (as Hollywood Hogan)
TV Stage Manager
Mikey the Cameraman
TV Associate Producer
Child
Little Girl (as Christina Mullins)
Mashed Potato Lady
Additional Muppet Performer / Animal (assistant) / Beach Hippie
Additional Muppet Performer
Additional Muppet Performer / Sweetums
Additional Muppet Performer / Scooter (voice)
Additional Muppet Performer / Fozzie Bear (assistant) / Sam the Eagle (assistant) / Beach Hippie
Additional Muppet Performer / Miss Piggy (assistant) / Beach Hippie
Additional Muppet Performer / Beach Hippie
Additional Muppet Performer (as Andy Stone)
Additional Muppet Performer (as B.J. Guyer)
Additional Muppet Performer (as Jim Kroupa)
Additional Muppet Performer (as Alan Trautman)
M.I.B. Guard (uncredited)
Beach Hippie (uncredited)
Joey Potter (uncredited)
Beach Scene (uncredited)
Themselves (uncredited)
UFO Mania Announcer (uncredited)
C.O.V.N.E.T. scientist (uncredited)