So, are the Sesame Street characters Muppets?
Given what we know of the term “Muppet,” yes! The Sesame Street characters are in fact Muppets! At least, the puppet characters, are. Obviously, the human characters who appear in the show are not Muppets.
The Sesame Street Muppet characters include everyone from Big Bird, to Oscar the Grouch, to the new character Julia, who happens to be the first Muppet with autism.