Robert Thorn

Ambassador Robert Thorn is a fictional character and the protagonist of the 1976 horror film The Omen. He is also the protagonist of the novel of same name by David Seltzer, where he is renamed as Jeremy Thorn. The story is about rise of the Devil's child through the world of politics. Robert Thorn adopts an orphan child who later turns out to be the Antichrist.
The character is portrayed by Gregory Peck in the 1976 classic movie and by Liev Schreiber in the 2006 remake.

Robert Thorn is the son of wealthy Reginald Thorn and has earned millions as inheritance. He has a brother, Richard, with whom he has attended Davidson Military Academy in Chicago. He has always been an athlete, and played as the quarterback for the Academy football team (as stated in Damien: Omen 2). At the time The Omen takes place, current U.S. President is said to be his former college roommate. He had known his wife Katherine Thorn since his childhood days and always loved her.

Robert is portrayed as a responsible figure. In the novel, it is said that he always knew his wife Katherine was emotionally unstable, but he still wanted to marry her and was a loving and caring husband. After his wife gave birth to a stillborn child, he was deeply concerned about how to break the news to her, fearing it would kill her. Katherine had wanted a baby for a long time and had two miscarriages. In order to hide the truth, he secretly adopted a baby boy, Damien. He shows his concern for Katherine throughout the story and does everything he is capable of doing to help her. He is also portrayed as a loving father.

Robert's wife Katherine has always wanted a child. Although not mentioned in the films, she had previously suffered from two miscarriages (the film§ only mentions her wanting a baby for a long time). On June the 6th, while in Rome, Katherine finally gave birth. When Robert reaches the hospital the priest in charge, Father Spiletto, informs him that the child is dead. Robert shows deep concern for his wife and Father Spiletto suggests that he secretly adopt a child without letting Katherine know about it. Spiletto shows him a baby boy, telling him that the child's mother had died at the same time as his son. Although reluctant to some extent at first, Robert ultimately decides to adopt, thinking about the serious impact the news could put on his wife. Spiletto states "On this night, Mr. Thorn, God has given you a son."

After the birth of Damien, the Thorns are a happy family. Thorn is appointed as the Ambassador to the Court of St. James, but their perfect lives start to change soon after Damien turns five. During the celebration of his fifth birthday, Damien's nanny hangs herself. Her dying words are, "It's all for you, Damien."

Katherine's Fears Regarding Damien

The Thorns are soon joined by a new nanny, Mrs. Baylock, who is a servant of Satan. Soon after she arrives, Katherine's feelings toward Damien changes. In the novel, Katherine complains to Robert that Damien is more comfortable with Mrs. Baylock than with her.

Later, Katherine wants to take Damien to a church wedding. Baylock strongly opposes and does everything to change Katherine's mind. Ultimately Damien is taken to the church, but attacks his mother out of fear. Although Katherine does not make much of it and is convinced he had a bad day, her mind later changes.

The next day when she takes him to the zoo, the animals react to Damien's presence in a violent way. This causes serious emotional damage to Katherine and later that night. She cries to Robert that she needs a doctor, but refuses to tell him what exactly her problems were. After seeing a doctor, she starts to get annoyed by Damien and cannot stand his presence.

Father Brennan

Thorn gets an unexpected visit from a priest, Father Brennan (Father Tasson in the novel) the day following the first nanny's death. He tries to warn Thorn about his son's origins, hoping to be forgiven by Christ by doing so. Naturally Thorn does not take it seriously and asks him to leave. The priest however persists and days later requests to meet with him at the Bishop's Park. He warns Robert that if he does not come, his wife may be in danger.

When Robert meets him, Brennan tells him that Katherine is pregnant and the child will die while it is in the womb. Damien will kill first the child, then Katherine and when he is certain that all of Thorn's properties will be his, he'll kill Robert as well. Brennan tells him to meet Bugenhagen in Israel who will tell him how to kill Damien.

Robert leaves with anger and then Brennan dies in a freak accident. The next day Robert learns Katherine is indeed pregnant and wants an abortion, to which he opposes. Robert is told by an unknown caller to check the newspaper; when he does he sees the news regarding the priest's death. Robert now starts to suspect that something is indeed wrong.

Keith Jennings

Keith Jennings (Huber Jennings in the novel) had attended Damien's fifth birthday party. An eye witness to the nanny's suicide, he becomes very interested in the Thorns. He starts to follow Robert and take photos of people associated with him. The day following the nanny's death, Robert mistakenly breaks Jennings’s camera in front of the embassy. That same day when Brennan leaves the embassy Jennings takes his photo and sees an unusual mark in the picture. Days later he sees the priest with Thorn again and once again the photo he takes contains the same mark. When Jennings sees the priest dead via a pole passing through his body, he is convinced that the marks he saw in the photos were an omen that he was going to die. A similar mark is seen on the photos he took of Damien's first nanny on his birthday before her death.

After showing the photos to Robert, Jennings gives him additional information about Brennan. Brennan had cancer and knew he was dying. He had a birthmark on his right thigh. The birthmark describes a sequence of sixes (known as 666). Later they go to Brennan's place which is fully covered with pages of the Bible and 47 crosses. Jennings had found a diary that contained all the information Brennan had gathered by stalking Robert. The last entry said he was supposed to meet Thorn at the Bishop's Park the day he died. Jennings shows Thorn a few paper clippings from five years ago. One is Damien's birth announcement; another is about an unusual phenomenon; an unusual star, much likes the Star of Bethlehem that appeared five years before.

Trying to figure out the meaning of the birthmark, Jennings asks if Robert is his son was born June the 6th, 6 AM. Robert then confesses for the first time that his son is dead and he has no idea whose son Damien is. Jennings wants to help him find out more about Damien but Thorn refuses saying it is his personal matter. Jennings then shows his photo accidentally taken by himself on the mirror which shows the similar mark; implying he will soon die as well.

Robert travels to Rome with Jennings and goes to the hospital where Damien was born; only to find out the old hospital burned down five years ago, killing many staff and destroying records. A nun helps Thorn by telling him that Father Spiletto is at a monastery in Subiaco. Thorn and Jennings find Spiletto badly burnt. A monk informs them that he does not speak or move; only his right hand moves with which he confessed that he had abandoned Christ. Thorn asks him to confess to him as well and tell him the whereabouts of Damien's real mother. Spiletto spells 'Cervet' and the monk tells them that Cerveteri is an ancient and abandoned Etruscan grave-yard.

Thorn and Jennings go there and find the graves of Jackel, Maria Avedici Santoya and a child, whose skull was smashed to death. Thorn realizes his real son was murdered and Damien is not human. They are then attacked by Rottweiler dogs and barely escape the cemetery.

Soon Thorn and Jennings return to their hotel from where Thorn calls Katherine to leave London and come to him as soon as possible. Jennings tells him to try to remember all that Brennan told him at the Bishop's Park while he goes to find out about the town of Megiddo. Thorn soon learns Katherine is dead and has the urge to kill Damien. By the time Jennings returns he remembered all the things Brennan told him.

The next day they go to Megiddo, Israel to meet Bugenhagen. Bugenhagen gives him "Seven Daggers of Megiddo", the only tool that can kill Damien. He explains Damien must be killed on Hallowed Ground. So that Robert is convinced, he tells him to find a 666 birthmark on Damien's body. Deeply disturbed by the idea of killing a child, Thorn throws away the daggers soon after leaving Bugenhagen. Jennings is decapitated while trying to pick them up. Finally convinced of evil forces surrounding him, Thorn takes the daggers and flies to London.

Robert Thorn returns to London with the daggers Bugenhagen gave him and prepares to kill the little boy. To make sure he is doing the right thing, he checks if Damien indeed bears the 666 birthmark. When he finally discovers the mark, he is then attacked by Mrs. Baylock, who is there to protect Damien. After he kills Baylock, he puts Damien in his car and drives to a nearby church. He is asked to stop by a policeman on the way, but he doesn't and the police start to chase him. He reaches the church and gets ready to kill Damien. He says "God Help Me." and is about to stab him when the police arrive. The police, having no idea of Damien's origins shoot Robert and Damien survives.

Robert Thorn and his wife Katherine are buried in Washington, where they are given an honorable burial and blessed by a Catholic priest. The last scene of The Omen shows Damien holding the hand of the U.S. President, Robert's college roommate, and his wife.

Robert Thorn is portrayed by both Gregory Peck in the 1976 version and Liev Schreiber in the 2006 version of The Omen movies in the same manner (a few minor details about their action changes).