One of the most terrifying demons in various cultures and myths is Pazuzu, a figure from Mesopotamian mythology. Pazuzu is often depicted as a monstrous creature with a human-like body, the head of a lion or dog, wings, and a scorpion’s tail. Known as the demon of the winds, Pazuzu could bring both destruction and protection. Despite his dual role, his terrifying appearance and association with chaos and disease make him particularly fearsome. Pazuzu is also famously featured in The Exorcist, where he is the demon that possesses the young girl, Regan, adding to his terrifying reputation in popular culture. His image and powers have become symbols of evil and terror across different mediums and beliefs.