When Harvey Bernhard had finished writing the script and was given the green light to start the production, the first person he contacted was Jerry Goldsmith because of the composer's busy schedule. Bernhard also felt that Goldsmith's music for The Omen (1976) was the highest point of that movie, and that without Goldsmith's music this sequel would never be successful.
William Holden was the original choice to star in the first film, The Omen (1976), but turned it down as he did not want to star in a picture about the devil. Gregory Peck was selected as his replacement. "The Omen" went on to become a huge hit and Holden made sure he did not turn down the part in this sequel.
David Seltzer was approached to write the screenplay but refused as he had no interest in writing sequels. Years later, he commented that if he had written it, he would have set it the day after the first The Omen (1976) film ended, with Damien living in the White House.
Don Taylor replaced director Mike Hodges as a result of creative differences. However, the few scenes Hodges directed were kept, like the scenes at the factory and at the military school, and also the dinner where Aunt Marion shows her concern about Damien.
The Thorn Mansion is the Lake Forest Academy (formerly the Armour Estate) in Lake Forest, Illinois. All exteriors had to be shot in the back garden of the academy/estate because the school had erected a very modern structure in front of the old estate.
Much of the film takes place at Davidson Military Academy which was started by the fictitious Harlan Page Davidson. The appellation "David's Son" is frequently used in the Bible to denote Jesus Christ, Damien's polar opposite.
The disappointing box office returns from this movie, and the failure of Exorcist II: The Heretic (1977) and Holocaust 2000 (1977) signaled the end of Hollywood's 70s demon child fad. Though demon child movies still get made from time to time the fad would never again be at its zenith as it was in the 70s. The dominant trend, starting with the release of Halloween (1978), was now slasher movies.
Neither Harvey Stephens nor Jonathan Scott- Taylor continued acting into adulthood. (Whereas Linda Blair did continue into adolescence and young adulthood, still making cameos here and there. She makes one in the movie Scream as a reporter).
The tagline for this movie was "The First One Was Only A Warning". That's what all the posters for the movie say. But the second one is only a warning too, and so is the third as Armageddon never actually comes in these movies.
"Davidson Military Academy" is really Northwestern Military and Naval Academy in Lake Geneva, Wisconsin, and has the same insignia. This school merged with St. John's Military Academy in 1995 to be St. John's Northwestern Military Academy in Delafield, Wisconsin.
Damien doesn't seem to physically kill anyone in this movie. We see a series of bizarre accidents which kill off the devil's enemies, and this seems to be engineered by the Devil himself, or demonic forces, not Damien. Only at the ending, when the room at the museum blows up and Anne gets incinerated shouting "Damien!", and when Mark has his aneurism, do we suspect foul play.
Teddy, the bully who antogonizes Damien into using his telekinetic powers, is Damien's first victim. Up to that point all of the killing had been done by Damien's acolytes and the Devil himself. After that point it's mostly Damien.
Lee Grant was blacklisted by Senator Joseph McCarthy and the House Unamerican Activities Committee and didn't work for years. Then according to her autobiography, "I Said Yes To Everything", she purposely took as many B-movie type jobs to get back into the swing of things, which is why this Academy-Award-winning actress accepted the Anne Thorn role in Damien Omen 2.
Lance Henriksen has a tendency to play military characters in action type movies and horror movies : He played Damien's drill sergeant at the academy, Sergeant Neff, in Damien Omen 2. He would star in a number of James Cameron movies also playing military characters, including The Terminator, where he played Seargent Vukovich and in Aliens he played Executive Officer Bishop the droid.
Ironically, Sylvia Sidney, who played Aunt Marion, outlived William Holden by almost 20 years: Holden died in 1981, shortly after this movie came out, from a tragic accident where he tripped and hit his head on an end table in his room. (Rumor has it his heavy drinking contributed to his accident and early death). Conversely, Silvia Sydney died in 1999 from natural causes.
Damien Omen 2 is a bit of an Avengers reunion: Ian Hendry plays Michael, Bugenhagen's colleague that he shows Yggail's wall to at the beginning. He was on the British 1960s TV series The Avengers, along with fellow Damien Omen cast member Elizabeth Shepherd (Joan Hart). Where Elizabeth Shepherd played Emma Peel on The Avengers, Ian Hendry played David Keel.
For some reason Damien seems to forget that he tried to kill his mother Kathy Thorn (Lee Remick) by knocking her off a step ladder and over a balcony with his tricycle in Omen 1. He seems to forget that he viciously attacked his mother while they were driving to the wedding at the Episcopal church at the beginning of that movie. He also forgets that he tried to electrocute his father Robert Thorn (Gregory Peck) at the end of Omen I when Robert was trying to bring him to the church to sacrifice and execute him. And he forgets that he sat around happily and malevolently watching all this evil and destruction around him in the first movie, like when he smiled maliciously when Mrs. Baylock, the demon Nanny, introduced herself, or when he looked into the camera and grinned viciously at the audience at the end of the Omen after his father just died from getting brutally shot. At he beginning of Part 2 atleast, Damien's an innocent. He's actually a good person for awhile, forgetful of his vicious past. We don't know why exactly, and that's a far cry from the sinister character we see at the beginning of Omens 1 and 3.
Meshach Taylor, Anthony from Designing Women, plays one of the doctors in this movie. He plays Dr. Kane, the doctor who discovers Damien has jackal blood and cells in his body, and then tries to investigate this only to get sliced in half literally by a demonically manipulated runaway elevator cable.
The trivia items below may give away important plot points.
Lew Ayres performed most of the stunt of his watery death himself up until the point where his character disappears under the ice. Lee Grant tried to persuade the veteran actor not to do it but he was determined to give it a shot.
After setting The Field Museum (not Museum of Science and Industry) ablaze, killing his aunt, Damien turns and marches back to the limousine and smiles maliciously and knowingly at the chauffeur, Murray. This is the same limo driver we saw Damien and Mark palling around with at the beginning, trading jokes about Aunt Marion, asking him for cigarettes, etc.
While The Omen (1976) was pretty discreet in terms of gore, trying to separate itself from and distinguish itself from The Exorcist (1973), part 2 is much gorier, featuring the bloody Joan Hart eye pecking scene and Meshach Taylor's guillotine by elevator cable.