The Ultimate Vampire Resource and Directory

The show involved a teenage boy named Mark who fell into the hat of Merlo the Magician and arrived in Lidsville, a land of living hats.

The villain of the show was a magician named Horatio J. HooDoo. Among other notable characters were Raunchy Rabbit, Weenie the Genie, Witchiepoo and Rah-Rah the football helmet.
The vain, short-tempered, but somewhat naive HooDoo flew around in his Hatamaran, blasting the good citizens of Lidsville with bolts of magic
and keeping them in fear, demanding that they pay him their Hat Checks. Mark helped the good hats resist as he attempted to find a way back home. HooDoo, trying to reclaim control of the androgynous Weenie from Mark, often enlisted the services of four Bad Hats consisting of Mr. Big, Captain Hooknose, Bella the Vampire's Cowl, and Boris the Executioner's Hood. In his high hat home, HooDoo was besieged by the taunting music of the Hat Band, as well as all of his talking knicknacks .HooDoo watched the action going on in downtown Lidsville from his hat home by using his Evil Eye, a device similar to a TV set, but resembling an eyeball. He also had a hot hatline phone. The show relied on an endless array of puns based on hats.