The Fly King is a villain who only appears in the episode of the same name.
He resembles a pig with flies surrounding him, and face paint.
- The Fly King may be a reference to Bezelbub, a name for the devil meaning "Lord of the Flies."
- It also may be a reference to the book Lord of the Flies since The Fly King has a pig-like appearance, and his minions appear to be children wearing face paint.
- He is the only character to have sucessfully stolen and used Princess Butterfly's powers