Sadako is a terrifying character from the Ringu series (the Japanese inspiration for The Ring). She is a vengeful spirit who haunts a cursed videotape. Anyone who watches the tape receives a chilling phone call and dies within seven days unless they pass the curse on. Sadako is often depicted as a woman with long black hair covering her face, crawling out of wells or televisions, embodying a sense of dread, isolation, and inevitable doom. Her presence reflects themes of revenge and unresolved tr