1) Bert or Ernie 2) Elmo or ernie 3) Fozzie Bear 4) Henson invention 5) Jim henson cutup 6) Kermit or ernie 7) Kermit or oscar 8) Kermit the Frog or Miss Piggy 9) Statler or Waldorf Found on https://www.crosswordclues.com/clue/muppet
(from the article `Henson, Jim`) American puppeteer, creator of the Muppets of television and motion pictures. He coined the term Muppets as a meld of `marionettes` and `puppets`; ... Found on http://www.britannica.com/eb/a-z/m/139
[Naval Acronyms and Slang] Most Useless Person Pusser Ever Trained (arguable originated from the Royal Navy). Derogatory by the way Found on http://www.encyclo.co.uk/local/21733