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 III voice in the climax is deliberately similar to that of Mercedes McCambridge, who did the uncredited voice of the demon in "The Exorcist", and the role is essayed in "The Exorcist III" by Colleen Dewhurst, who was uncredited (actress Dewhurst was twice married to, and twice divorced from, actor George C. Scott). One shot missing from the re-filmed climax - but which appears in the trailer - shows Karras/the Gemini "morphing" through a variety of faces. It was left out of the film because Blatty was not happy with the special effects work. On the climactic exorcism scene, Blatty later