Eileen Dietz is an American actress who is best known for her appearances in many horror films such as the face of the demon in The Exorcist and for her portrayal of characters on the soap operas Guiding Light and General Hospital.

Pazuzu is a fictional character who is the main antagonist in The Exorcist horror novels and film series, created by William Peter Blatty. Blatty derived the character from Assyrian and Babylonian mythology, where the mythic Pazuzu was considered the king of the demons of the wind, and the son of the god Hanbi. In The Exorcist, Pazuzu appears as a demon who possesses Regan MacNeil.