Well, this is the list of confirmed characters so far.
Damien Woodhouse (Omen) - Damien wakes up in limbo in the first chapter after trying to prevent an armed robbery. The grim reaper greets him and senses the over-dominating spiritual energy which allows Damien to be a poltergeist (a rare paranormal being). The grim reaper and Damien make a deal for Damien to return to his body and in return Damien will fight escaped evils of Hell.
Nancy Woodhouse (Nightmare on Elm Street) - The secondary protagonist. She is suppose to embody the "final girl" trope. She's been having nightmares that keep her awake, causing her to become an insomniac, which makes her cranky. Although she is disrespectful to her family at times, they are the most important people to her and will put her life on the line in order to save Damien.
Rosemary Woodhouse (Rosemary's Baby) - When she was younger, she was raped by Satan as part of a ritual done by Neo Nazi devil worshipers. Unable to abort it, she devoted her life to teach Damien to use his powers for the good of humanity by not letting him know of his true background.
Warlock (???) - The cult leader who summoned the Antichrist in Rosemary. I forgot which movie it was where the satanist or Neo Nazi leader was titled "Warlock". Warlock is the big bad of season 2, when Damien begins the Agency. I'm thinking about replacing him with Roman from Rosemary's Baby or Imhotep from the Mummy films. I'll probably have him summon some kind of Cthulhu horror at some point.
Grim Reaper (Seventh Seal) - Unlike a skeleton in a robe, this Grim Reaper is a face of a pale, skeletal-looking man who is shrouded in a black cloak that seems to blend into shadows. The Grim Reaper is Damien's spiritual adviser.
Robert Freeling (Poltergeist) and Ben Huss (Night of the Living Dead) - Robert is Nancy's boyfriend. He is suppose to be the all-American "hero guy" even though he isn't the protagonist. Ben Huss is smart and resourceful, but shy and quiet. He's also the token black guy. lol
Margot Shelby (Decoy) - A complete monster. Based on a woman from my life who stole from my family. She is the femme fatale, or a parody of it. She looks like Cruella de Ville. She steals from the Woodhouse household after moving into Damien's room when he is comatose for three weeks.
Sam Spade (The Maltese Falcon) - The most lawful character. An occult detective who comes to the Woodhouse household after Rosemary discovers her safe has been raided. Sam Spade is able to see Damien (who is a spirit) and performs a "seance" which allows Damien to possess Spade. Possessions are rare and can only occur in two ways: the possessee allows you to take over them, or you cause them to go into submission where they lose control of their body, either through fear or harm, for example.
Pazuzu (The Exorcist) - The Big Bad of the first "season". Its because of this evil demon that a portal to hell has opened, allowing for other demons to leave and join Pazuzu's army. When Damien defeats Pazuzu at the end of the season, Damien closes it. At one point, Nancy is killed, causing Damien to fall in a long depresssion. The Grim Reaper refuses to bring Nancy back to life, so Damien ends up reopening the portal to disturb the balance of nature and death, causing the Grim Reaper to end up becoming the next "Big Bad", although that is planned for Season 4.
Tessio (Godfather) - The gangster Pazuzu possesses. While possessed, he starts a rebellion against the current don of the Chicago Outfit by convincing his underlings to help him out.
Mark Mc Cluskey
(Godfather) - A corrupt police officer working for Tessio. Was Sam Spade's partner during the Margot case, but ended up abducting him when Spade got too close to learning the truth of him and Tessio.
Torgo (Manos: Hand of Fate) - The Woodhouse's charitable groundskeeper who performs tasks for the Woodhouse family for free. Torgo is blamed for stealing from them by Margot. Torgo reveals himself as Damien's appointed overwatcher, who has been trying to make him join the Cult of Satan.
Dr. West (Re-Animator) - A neurosurgeon who was ostracized from the medical community for performing partial brain transplants on different animals, causing insane, chimeric creatures. He performs it on his assistant, Dr. Phibes, using the brain of an infamous gangster named Sonny, known for his anger.
Dr. Phibes (The Abominable Dr. Phibes) - Although he feels disgraced at first, Dr. Phibes begins to enjoy his new body and demands that Dr. West builds him a new one. Dr. West realizes that Dr. Phibes is being controlled by Sonny's thoughts.
Unnamed Gangster - I don't know which gangster I'll choose to play this part, but basically its one of Tessio's underlings who runs off to Louisiana from Chicago. He is discovered by the Don and is drowned in a tar pit, which just so happens to be cursed by a black magic practicing Bokor, named Murder.
Murder (White Zombie) - A pale Haitian Louisiana voodoo and black magic practicing sorcerer. Zombies are true to their voodoo origin, not just mindless flesh-eaters, but magically-dominated slaves. Since this is a universe based on movie mythology, zombies can turn people into zombies as well.
Carrie White (Carrie) - Carrie's character does not appear for a while. She is introduced in the Agency arc, when Damien drops out of school to form the spiritual investigator group (season 2). She is an ostracized high school senior who is Damien's age. She is contacted by an ancestor, a witch killed in Salem Witch Hunt, who tells her about her witch bloodline and powers. The Witch, Sara (The Conqueror Worm) wants Carrie to kill the kids who made fun of her, who happen to be the descendants of the people that executed Sara.
Sara White (The Conqueror Worm) - An executed Witch during the Salem Witch Hunts. She has characteristics of the Blair Witch and Freddie Kruger.
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I'm thinking about replacing Sam Spade and Margot Shelby for a horror character. Does anyone know any? Also, I'm trying to look for a good candidate for Damien's "dad". His dad is going to be a gang banger from the 70's who fights Skinheads. He is in a gang called the "Longhairs". He is suppose to be a gentleman and seduces Rosemary. I originally intended for him to be John Robie from To Catch a Thief. His personality might change if the character is different, but I want to retain the whole "nice girl likes a bad guy".