They may take any Human shapes at will and usually reveal to have no face at all in the end.


Not much is known about the Noppera-bō - it may be the ghost of a murder victim who's corpse was never found, or simply a prankster ghost who likes to scare people into a nervous breakdown.


Noppera-bō are known primarily for frightening humans, but are usually otherwise harmless. They appear at first as ordinary human beings, sometimes impersonating someone familiar to the victim, before causing their features to disappear, leaving a blank, smooth sheet of skin where their face should be.


Wikipedia - Noppera-bō

Obakemono - Noppera-bō