Question: What demon from Assyrian and Babylonian mythology is battled by Father Damien Karras in "The Exorcist" film series? 

full_context: Document 1: Abdul Alhazred: Abdul Alhazred is a fictional character created by American horror writer H. P. Lovecraft. He is the so-called "Mad Arab" credited with authoring the fictional book "Kitab al-Azif" (the "Necronomicon"), and as such is an integral part of Cthulhu Mythos lore.
Document 2: Exorcist II: The Heretic: Exorcist II: The Heretic is a 1977 American supernatural horror film directed by John Boorman and written by William Goodhart. It stars Linda Blair, Richard Burton, Louise Fletcher, Max von Sydow, Kitty Winn, Paul Henreid and James Earl Jones. It is a sequel to William Friedkin's 1973 film "The Exorcist" based on the 1971 novel by William Peter Blatty and the second installment of "The Exorcist" franchise. The film is set four years after the original film and centers on the now 16-year-old Regan MacNeil, who is still recovering from her previous demonic possession.
Document 3: Damien Karras: In William Peter Blatty's "The Exorcist", Father Karras was one of the priests who exorcises the demon from young Regan MacNeil. He is a Jesuit psychiatrist suffering a crisis of faith. He searches for proof to lead an exorcism, yet during his investigation he comes to realize that there is no better way for God to prove His own existence than to reveal the foul presence of a demon. During the exorcism, the demon frequently brings up the subject of Karras's mother's death and how he wasn't there to see her die, which seems to trouble Karras emotionally.
Document 4: The Exorcist (novel): The Exorcist is a 1971 novel by American writer William Peter Blatty. The book details the demonic possession of twelve-year-old Regan MacNeil, the daughter of a famous actress, and the two priests who attempt to exorcise the demon. Published by Harper & Row, the novel was the basis of a highly successful film adaption released two years later, whose screenplay was also written by Blatty, and part of "The Exorcist" franchise.
Document 5: History of A Cuban Struggle Against the Demons: History of a Cuban Struggle Against The Demons ( ""Historia de una pelea cubana contra los demonios"" in spanish) is a book written by Fernando Ortiz Fernández, published in 1959 by the university of Santa Clara city: "Universidad Central de Las Villas". The book is a voluminous essay in which the author analyses the history of Remedios, when a priest named José González de la Cruz, alarms all the people of the town with news that the prince of darkness Lucifer commands an army of demons against them, with the propose to move the settlement to another place in his own lands. This history occurred toward the end of the seventeenth Century, when the centers towns of the Cuban Island was nearby to be forgot by the Spanish Monarchy. Remedios as Trinidad and Sancti Spírirus lived in a continous smuggling with pirates and cosairs. This same pirates sometimes attacked this settlements, and a part of the people of Remedios fear them and support the desires of the priest. In the end, a part of the population of Remedios go out and setter in "hatos de cupey" a nearby region, the city named Santa Clara, in the present day the capital of the Villa Clara province.
Document 6: The Exorcist (film): The Exorcist is a 1973 American supernatural horror film, adapted by William Peter Blatty from his 1971 novel of the same name, and starring Ellen Burstyn, Linda Blair, Max von Sydow, and Jason Miller. The film is part of "The Exorcist" franchise. The book, inspired by the 1949 exorcism of Roland Doe, deals with the demonic possession of a 12-year-old girl and her mother's attempts to win back her child through an exorcism conducted by two priests. The adaptation is relatively faithful to the book, which itself has been commercially successful (earning a place on "The New York Times" Best Seller list).
Document 7: Candido Amantini: Candido Amantini (January 31, 1914 – September 22, 1992), was the Italian Roman Catholic Passionist Priest Rev. Fr. Candido of the Immaculate, C.P., a Master Exorcist, spiritual director and confessor. For thirty-six years as Fr. Amantini he was Rome's chief exorcist. Stationed at the Church of the Holy Staircase, he often saw 60 to 80 people per day. He also taught Sacred Scripture and Moral Theology. He wrote a book entitled "Il Mistero di Maria", about the Virgin Mary.
Document 8: 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, "The Exorcist" and its first sequel, "". In both films, she was portrayed by Linda Blair.
Document 9: Lankester Merrin: Merrin, an elderly priest and paleontologist on an archeological dig in Iraq, finds images of the demon Pazuzu and subsequently experiences other unusual phenomena. He had previously faced the demon many years ago during an exorcism in Africa. The find sparks a premonition that he will battle the demon again in a distant land. Merrin does not appear again until much later in the novel, when he joins the protagonist, Father Damien Karras, in Washington, D.C. to exorcise the demon from the body of a young girl. Merrin, who has a heart condition for which he takes nitroglycerin, dies during the ritual, leaving the inexperienced Karras to complete the exorcism himself.
Document 10: The Exorcist III: The Exorcist III is a 1990 American supernatural horror film written and directed by William Peter Blatty. It is the third installment of "The Exorcist" franchise and a film adaptation of Blatty's novel, "Legion" (1983). The film stars George C. Scott, Ed Flanders, Jason Miller, Scott Wilson and Brad Dourif. This is the only "The Exorcist" film not to be distributed theatrically by Warner Bros., though Warner Bros. subsequently gained international distribution rights.
Document 11: William Peter Blatty: William Peter Blatty (January 7, 1928 – January 12, 2017) was an American writer and filmmaker best known for his 1971 novel "The Exorcist" and for the Academy Award-winning screenplay of its film adaptation. He also wrote and directed the sequel "The Exorcist III". After the success of "The Exorcist", Blatty reworked "Twinkle, Twinkle, "Killer" Kane!" (1960) into a new novel titled "The Ninth Configuration", published in 1978. Two years later, Blatty adapted the novel into a film of the same title and won Best Screenplay at the 1981 Golden Globe Awards. Some of his other notable works are the novels "Elsewhere" (2009), "Dimiter" (2010) and "Crazy" (2010).
Document 12: Jason Miller (playwright): Jason Miller (April 22, 1939May 13, 2001) was an American actor and playwright. He received the 1973 Pulitzer Prize for Drama for his play "That Championship Season" and was widely recognized for his role as Father Damien Karras in the 1973 horror film "The Exorcist," a role he reprised briefly in "The Exorcist III." He later became artistic director of the Scranton Public Theatre in Scranton, Pennsylvania, where "That Championship Season" was set.
Document 13: Pazuzu (The Exorcist): Pazuzu 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 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.
Document 14: Exorcist: In some religions, an exorcist is a person who is believed to be able to cast out the devil or other demons. A priest, a nun, a monk, a healer, a shaman or other specially prepared or instructed person can be an exorcist. An exorcist is a person who performs the ridding of demons or other supernatural beings who are alleged to have possessed a person, or (sometimes) a building or even an object.
Document 15: Pazuzu (disambiguation): Pazuzu is king of the demons of the wind, the bearer of storms and drought, in Assyrian and Babylonian mythology.
ground_truth: Pazuzu