The Gashadokuro are spirits that take the form of giant skeletons and are fifteen times taller than an average person, said to be created from the amassed bones of people who died of starvation. These Yōkai roam after midnight, grabbing lone travelers and biting off their heads to drink their spraying blood.
Sometimes the Gashadokuro are portraited as towering armored skeletons of warriors who died in battle.
There is a tell sign as the victim would hear the sound of loud ringing in the ear. The Gashadokuro are said to possess the powers of invisibility and indestructibility; though Shinto charms are said to ward them off.