Yokai that take on the power of the elements themselves. Only one of each are known to exist (mythologically speaking) :-

• Yuki-Onna - Appears as a beautiful maiden wearing all white, or with white skin. She appears during snowy nights or during the full moon, and manifests as a white vapour that blows through the cracks of the door. She sucks the life out of the sleeping through her breath giving the impression that they froze to death.
• Yama-Ubi - Resides in the mountains and is often mistaken as a witch, in which form she lassos children with her hair to eat later. She is seen as a sort of supernatural mother in cases.
• Nurikabe - physical manifestations of darkness said to haunt roads. when you come into contact with one, you feel tired and unable to move. it is often portrayed as a brick wall.