The Muppets were created by Jim Henson. First introduced to the public on PBC, the first muppets appeared on the show Sesame Street in 1969. Characters like Bert, Ernie, Grover, Oscar the Grouch, Cookie Monster, and Big Bird became household friends to millions of children and adults alike.
Kermit the frog was created in 1955 by Jim as one of his first "muppets" said to be a cross between puppet and marionette. Jim traveled the country using Kermit in a stage show and later a few small roles on shows Jim produced. Kermit was introduced on Sesame Street as a character, a roving reporter who interviewed the citizens and storybook characters of the Sesame Street "neighborhood". He was so popular with the audience that in 1976 Jim decided to include him in a new venture he was working on for primetime. He created a prime time variety show with his muppets entitled The Muppet Show.
The Muppet Show was a weekly variety show reminicent of the old vaudvile acts. The show featured the talents of some of the days most important, and sometimes most hilarious people every week including: Mark Hamill and the Star Wars cast, Steve Martin, Alice Cooper, Peter Ustinov,Vincent Price,George Burns, Elton John, Julie Andrews, Peter Sellers, Bob Hope, John Cleese, Sylvester Stallone, Christopher Reeve, Diana Ross, Brooke Shields, Carol Burnett, Johnny Cash and Roger Moore- just to name a few. The show was a outstanding success and introduced us to a whole new bunch of characters. It went off the air in 1981.
Bob obtained the licence to created some of the characters from the show. After much work and prototyping, they released only two of them, Kermit and Animal. Animal was never released to the United States even though he appeared on the box artwork.
Two more characters were said to have been developed in the prototype stage but never made it to production, however to date only fakes have appeared; they were Miss Piggy and Rowlf ( the piano playing dog ).
*Below are pictures of some of the fakes.