Pazuzu (The Exorcist) the first film, Linda Blair played Regan. Mercedes McCambridge provided the majority of Pazuzu's dialogue, most notably in all the scenes with Fathers Karras and Merrin. In earlier scenes, Pazuzu's voice is provided by Linda Blair herself in some scenes, and Ron Faber in others. The face of Pazuzu is provided by Eileen Dietz, who also plays Regan during the vomiting, levitation and masturbation scenes. Pazuzu is mostly manifested by a swarm of locusts in "Exorcist II: The Heretic", though is also shown possessing the young Regan and a young boy named Kokumo during flashback sequences. While the stand-in for
The Exorcist (film) stuntman jerked her around using a special effects cable during the scene when Regan slaps her mother. According to the documentary "Fear of God: The Making of the Exorcist", the injury did not cause permanent damage, although Burstyn was upset the shot of her screaming in pain was used in the film. After Father William O'Malley confirmed to Friedkin that he trusted the director, Friedkin slapped him hard across the face to generate a deeply solemn reaction for the last rites scene; this offended the many Catholic crew members on the set. He also fired blanks without warning on the