Vengeful ghost

Across source traditions the vengeful ghost is not a single origin myth but a functional type: a deceased person whose death was cruel, unnatural, unjust, or followed by failure in funerary rites becomes restless and returns to demand redress. Examples named in the sources include the Chinese yuan gui (‘ghost with grievance’) tied to wrongful death, Japanese onryō who 'come back from purgatory' for wrongs done in life, and Roman lemures associated with those not afforded proper burial or cult. The emphasis in the literature is on social or ritual failure (murder, denial of rites, improper disposal) rather than a single creation story.

Descriptions vary by culture and story; the aggregated sources do not fix a universal appearance. Motifs documented in specific traditions include female-associated forms (Chinese nü gui often pictured with untied hair) and culturally specific images such as Japanese onryō, which in some tales manifest physically rather than only as insubstantial spectres. Many local types (for example, La Llorona or kuchisake-onna) have their own distinctive visual markers, but the comparative sources stress variation rather than a single standardized look.

The core behavioral trait reported across sources is grievance-driven activity: returning to the living world to seek revenge or redress. How that manifests differs by tradition — some accounts (e.g., certain onryō stories) emphasize physical manifestation and direct harm, others emphasize possession or affliction (Jewish dybbuk is cited as a malicious possessing spirit in comparative lists), and still others disturb households or social order (Roman lemures). The encyclopedic summaries aggregate these as a family of restless spirits capable, in various cultural narratives, of haunting, tormenting, possessing, cursing, or otherwise affecting the living.