Regan MacNeil Regan MacNeil Regan Teresa MacNeil (born November 11, 1961; adaptations: c. September 1963) is a fictional character from William Peter Blatty's horror novel and film adaptation "The Exorcist" as a supporting character and its first sequel, "" and the sequel television series, "The Exorcist", as one of the main protagonists in season one. In both films, she was portrayed by Linda Blair and in the television series, she was played by Geena Davis. Regan MacNeil is a 12-year-old girl and the daughter of actress Chris MacNeil. Regan is caught between her mother's grueling working schedule and the fact that her
Pazuzu (The Exorcist) to take complete control of her mind. However, with the aid of the priest Father Tomas and her family, Regan fights back against Pazuzu, regaining control of her mind, just as Father Tomas exorcises the demon from her body. William Peter Blatty's creations of Pazuzu and "The Exorcist" were based on a heavily reported series of 1949 events in St. Louis, Missouri concerning the possession of a 14-year-old known as "Robbie Mannheim" (or sometimes "Roland Doe"). Blatty, who was a student at Georgetown University, read about the story in Washington, D.C. newspapers and created "The Exorcist" twenty years later. In