A skeleton is a framework that supports a body. In animals, a skeleton is made up of bones. The human skeleton has come to represent an image macabre in nature when pertained to popular culture.
A scene from Time Piece involves the Man watching a woman dance, who briefly turns into a skeleton for a few frames.
A human skeleton resides in Count von Count's castle, seen with Count von Count while he sang "Bones" in 1978. The skeleton appears again in the framing sequence of Elmo Says BOO!, identified by the Count as the same fellow who appeared with him nineteen years earlier.
A skeleton appears to briefly sing with Alice Cooper in "Welcome to My Nightmare" from episode 307 of The Muppet Show.
In the Muppet Meeting Films, a skeleton appears in "Great Salespeople in History" (as a skull) and in "Top Ten Reasons to Take a Break."
One skeleton puppet was used for several characters including Dead Tom in Muppet Treasure Island, Colonel Thomas Blood's remains in Muppets Most Wanted, and as Duddy in Muppets Haunted Mansion.
When Waldorf quits his job as co-host of From the Balcony in episode 25, Statler first replaces him with a blogger many years his junior. After admitting he needs someone his own age, the empty chair is occupied by a decaying skeleton.
XXRay produced a line of toys featuring Sesame Street characters with their skeletons exposed.