Ushi-oni

A terror from Western Japan, Ushi oni  (Japanese: 牛鬼 or うしおに, meaning "ox demon") or Gyūki is a class of monster that lives near water. The name literally means “ox demon,” and it can actually refer to a number of different monsters with bovine traits.

Myths & Legends
Despite their unique and varying morphology, all ushioni share a number of characteristics, pointing to a common origin. They are exceedingly cruel and savage beasts, they breath toxic poison, and they like to eat humans. Some ushi oni are lurkers, attacking people who draw too close to their lairs; others are hunters, roaming the coasts seeking prey; the cruelest ones ravage the same towns over and over, inflicting terrible curses or bringing diseases with them. Most ushi oni live along the rocky coasts and beaches of Western Japan, although a few roam the mountains of Shikoku.

Ushi oni frequently work together cooperation with other yokai. The spider-like version from the coasts of northern Kyushu and western Honshu frequently partners with nure onna and iso onna, who use their charms to lure unsuspecting men towards the water’s edge. When they approach, the ushi oni pounces upon them and bites the victims to death, and the meal is shared between the yokai.

Appearance
Most ushi oni they resemble an ox from the head up, and a demonic horror below the head. Many forms are known to exist; the body of an ox with a head like an oni’s; the head of an ox on a body like a spider’s or a cat’s; or even an ox’s head on the body of a kimono-clad human (a Japanese version of the minotaur).