Wikipedia says:

Grand Poobah is a term derived from the name of the haughty character Pooh-Bah in Gilbert and Sullivan's The Mikado. In this comic opera, Pooh-Bah holds numerous exalted offices, including Lord Chief Justice, Chancellor of the Exchequer, Master of the Buckhounds, Lord High Auditor, Groom of the Back Stairs, and Lord High Everything Else. The name has come to be used as a mocking title for someone self-important or high-ranking and who either exhibits an inflated self-regard, who acts in several capacities at once, or who has limited authority while taking impressive titles.

Then there is Boohbah:

The Boohbahs are five furry, gumdrop-shaped creatures played by actors in full body costumes. Their thick, shimmery fur sparkles with tiny lights; their Kewpie doll style heads are hairless and feature big eyes with rows of lights for eyebrows. They do not speak, but instead make noises like squeaks, squeals, and clicks. The Boohbahs can retract their heads into their furry necks. Each Boohbah is a different color.