Swamp demons come from the imaginations of the villainous farmers in The Muppet Musicians of Bremen. When the travelling musician animals mistake the farmers for a family, the superstitious and cowardly farmers mistake the musicians for swamp demons.

Image	Swamp demon	Character	As viewed by
	Tree Troll	Leroy	Mordecai Sledge
	Bush Bat	T.R.	Lardpork
	Muck Monster	Catgut	Caleb Siles
	Slime Serpent	Rover Joe	Mean Floyd