The general idea of a "Boogeyman" inherently stirs up the creeps. Originating from 16th century folklore mostly designed to scare your kids, Boogeymen have taken on many forms in modern pop culture and become a proper noun for "spooky creature" in-and-of itself. Hell, one of my favorite horror quotes of all time is Tommy Doyle's declaration in John Carpenter's Halloween that "you can't kill The Boogeyman."