Noppera-Bo (Japan)

Noppera-Bo, or "Faceless Ghosts," appear as ordinary people until they turn to face you, revealing blank, featureless visages. These ghosts are believed to be the spirits of individuals who died tragically or with unresolved grievances. Encounters with them are eerie but generally harmless, as they usually vanish without causing harm. They serve as a reminder of life's impermanence and the impact of unresolved emotions.