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) in "The New Republic", wrote, "This is the scariest film I've seen in years—the "only" scary film I've seen in years ... If you want to be shaken—and I found out, while the picture was going, that that's what I wanted—then "The Exorcist" will scare the… (shit) out of you." "Variety" noted that it was "an expert telling of a supernatural horror story ... The climactic sequences assault the senses and the intellect with pure cinematic terror." In "Castle of Frankenstein", Joe Dante called it "an amazing film, and one destined to become at the very least a horror classic.