Oniguma

The Oniguma (オニグマ) is the animal from the myth of Ninannah which eats girls as sacrifice.

It is the titular antagonist of the Spirit Bear Arc.

Appearance
The Oniguma resembles an impossibly large bear that towers over houses. It is covered in countless arrows which have pierced on its back, giving it the appearance of having spikes from from its skin.

Background
It was alleged that humans descending on Ninannah had robbed the wealth of the Oniguma and began to eat humans from anger.

Spirit Bear Arc
Fushi fought the "Oniguma" in Ninannah.

After the Oniguma's death, Fushi took its form, and its spirit followed Fushi for several centuries.