Wanyudo literally means wheel monk.

Wanyudo is a giant head trapped in flaming oxcart wheel.

The Legends says that this monk used to be a cruel leader who carried his victims at the back of his oxcart. As punishment, the monk was tormented in a fiery oxcart wheel burning his head for eternity.

It was said that Wanyudo is the keeper of Gates of Hell.

They enjoy tormenting people and when  you encounter this yokai, they will steal your soul and drag you to hell.