Characters played by Jim Henson
Yorick
Harry the Hipster
Omar
Pierre the French Rat
Professor Madcliffe
Sam
Limbo Prototype
Moldy Hay
Characters played by Jane Henson
Keely Smith
Characters played by Jerry Juhl
Additional Muppet Performer
Characters played by Bob Payne
Additional Muppet Performer
Characters played by Paul Frees
Harry the Hipster
Characters played by Stan Freberg
Stan Freberg