Nago

Nago (ナゴ) or Nago no Kami (ナゴの守, meaning Nago the Guardian) was previously the leader of the boar clan who resided in the western side of Japan. He protected the forest from being destroyed but was later consumed by hatred and eventually turned into a demon.

Appearance
Nago was a large boar with beady yellow eyes, brown skin and two large tusks.

When he became a demon, it was hard to see who he really was because the blood worms covered his whole body except for the eyes. Nago's eyes turned a flashing red when he was the demon.