The musical movie features the Muppets and Michael Caine as Ebenezer Scrooge. The songs were written by Paul Williams. Kermit the Frog starred as Bob Cratchit, Miss Piggy as Mrs. Cratchit, Gonzo the Great as Charles Dickens, Fozzie Bear as Fozziwig, Rizzo the Rat as himself, and Statler and Waldorf as Robert Marley and Jacob Marley.