Baku: The Legend of the Dream Eater - The baku, otherwise known as the ‘dream eater’, is a mythological being or spirit in Chinese and Japanese folklore which is said to devour nightmares. The baku cannot be summoned without caution, however, as ancient legends say that if the baku is not satisfied after consuming the nightmare, he may also devour one’s hopes and dreams.
Mujina- Japanese folklore: magical badgers that live in the mountains. They can shapeshift into human form, but can also take the appearance of a noppera-bo; a faceless human. They are very shy and tend to avoid humans as much as possible.
Keukegen- Japanese folklore: a creature covered in black fur that lives in peoples houses. Its name means "rarely seen". It was a disease spirit, inflicting sickness into those who lived in its host house.