Since many of my friends are mystified by Japanese mythology, I've got a NSFW link provided by i09 that covers the devious Tanuki and their magical testicular powers. Below that is a series of questionable artwork featuring human genitalia. At least the Tanuki knew how to party; "I'm a scary pile of dicks" just isn't as impressive.
http://io9.com/5892181/the-raccoon-scrotum-monster-and-other-awful-creatures-from-1800s-japanese-artwork