Japan: Ittan-Momen

http://lorekeepersinn.blogspot.com/

The Ittan-Momen doesn't sound particularly scary; it's basically a sentient roll of cotton that just flies around in the wind at night, wandering around. But the Ittan-Momen is also a sadistic asshole, because if it sees you, it will either wraps itself around your neck and choke you to death, or wrap itself around your head and suffocate you. Again, the idea that you can be walking back from the convenience store and suddenly get murdered by a large piece of cloths is deeply disconcerting to me.