High-Speed Regeneration: The Haniwa-Musha that guards the inside of Mt. Fuji is able to quickly regenerate when its shattered, so long as there is an abundance of energy from Mt. Fuji.
Haniwa were clay figures buried with the dead in the Kofun period, between the 3rd and 6th century. Many varieties are known, including various human figures, but also animals, houses and boats. The haniwa depicting warriors are among the most famous today.
Researchers speculate that haniwa were meant to protect the dead from being disturbed, or serve as containers for their souls, though portraying them as animated constructs is largely a product of modern popculture rather than folklore. A rare exception is a story from the Nihon Shoki in which a haniwa horseman comes alive and lets a man borrow his horse.