Gashadokuro

Gashadokuro form when many people die of starvation or in war without being properly buried. Their grudges accumulate; their bones gather together and rise as one vast skeleton. They are most strongly associated with medieval Japanese famine and battlefield aftermath.

An enormous skeleton, fifteen times human height, assembled from countless smaller bones. Red eyes burn in the skull. The joints grind audibly. It is invisible until it is too close to escape.

Immense strength. Can tear off and consume human heads. Its approach announces itself only by a ringing in the victim's ears. Cannot be destroyed — only survived until dawn, when it must disperse.