Hoover Horror is a worshipper of Hagost.
"This over-specialized spectre is one of thousands currently vacuuming a path of consumption across the U.S., searching for the Crystal of Hagost.
In life the Hoover Horror ghost was a worshipper of Hagost, millennia ago. Now, all traces of its humanity is gone, it exists only to serve Hagost. It's currently having a blast looking for the crystal."