Jim Henson (Kermit the Frog)
Frank Oz (Fozzie Bear)
Frank Oz (Miss Piggy)
Charles Durning (Doc Hopper)
Dave Goelz (Great Gonzo)
Jim Henson (Rowlf)
Jim Henson (Dr. Teeth)
James Frawley (Waiter)
Dom DeLuise (Bernie - the Hollywood Agent)
Michael Davis (Muppet Performers)
Mel Brooks (Prof. Max Krassman)
Milton Berle (Mad Man Mooney)
Steve Whitmire (Muppet Performers)
Jim Henson (Waldorf)
Steve Martin (Insolent Waiter)
Paul Williams (El Sleezo Pianist)
Bruce Kirby (Gate Guard)
James Coburn (El Sleezo Cafe Owner)
Orson Welles (Lew Lord)
Telly Savalas (El Sleezo Tough)
Richard Pryor (Balloon Man)
Frank Oz (Sam the Eagle)
Frank Oz (Animal)
Scott Walker (Frog Killer)
Carroll Spinney (Big Bird)
Austin Pendleton (Max)
Richard Hunt (Scooter)
Richard Hunt (Janice)
Richard Hunt (Beaker)
Bob Hope (Ice Cream Man)
H.B. Haggerty (Lumberjack)
Ira Grubman (Bartender)
Elliott Gould (Beauty Contest Compete)
Dave Goelz (Zoot)
Dave Goelz (Dr. Bunsen Honeydew)
Lawrence Gabriel (Sailor)
Richard Hunt (Statler)
Richard Hunt (Sweetums)
Bobby Payne (Muppet Performers)
Jerry Nelson (Robin the Frog)
Jerry Nelson (Lew Zealand)
Jerry Nelson (Floyd Pepper)
Jerry Nelson (Crazy Harry)
Kathryn Mullen (Muppet Performers)
Tommy Madden (One-Eyed Midget)
Cloris Leachman (Lord's Secretary)
Carol Kane (Myth)
Madeline Kahn (El Sleezo Patron)
Edgar Bergen (Himself)