I don't consider Yoda a Muppet, just like I don't consider Jen and Kira (or the others) from The Dark Crystal, or Hoggle and Ludo (and others) from Labyrinth as Muppets. Just cause he's a puppet done by Frank (or Jim, or Jerry, or Dave, or Richard, or Steve, or Brian, or Bill, or Kevin, or any of the others) I would not say they are a Muppet. Characters from The Muppets, Sesame Street, Fraggle Rock, The Hoobs, Secret Life of Toys, Mopatop Shop, ect. are what I consider to be Muppets. But the realistic Sci-fi/fantasy puppets/characters I don't consider Muppets.