Damien Karras

Father Damien Karras a fictional Greek-American character, played by Jason Miller, who appeared in the 1973 blockbuster The Exorcist. Father Karras was one of the priests who exorcised young Regan. He is a Jesuit psychiatrist who's lost his faith. Father Karras searches for proof to lead an exorcism, yet during his investigation he comes to realize what better way for God to prove His own existence than to reveal the foul presence of Lucifer.

In one scene, Karras’s mother, played by Greek actress Vasiliki Maliaros, is listening to a Greek radio station broadcasting the song Ιστορία μου αμαρτία μου (My Story, My sin) by the late popular Greek singer Rita Sakellariou. He is originally from New York. Father Karras is killed taken a tumble down a flight of stone steps.

Trivia
Jack Nicholson was originally up for the part of Father Karras before Jason Miller landed the role.