Demons
"Oh, you dumb witches. You dare think you have the power to hold sway over me, Alastor, the Dark Master, Viscount of the Malebranche, Executioner…?" - Alastor
Harbinger of Hell
Demon
When the harbinger of hell was introduced in Charmed it started in its primordial form that resembled a black blob. The harbinger of hell eventually took over a student named Angela Wu to use her as a vessel to perform its evil acts. The harbinger of hell preyed on virgins and even preyed on Macy Vaughn which led to the demon being captured and eventually vanquished by the “Charmed Ones.” The harbinger had the power of possession, supernatural strength, and a deadly touch.
Alastair Caine (Alastor)
Demon
Alastor is the father of Hunter and Parker Caine. Alastor is an older demon who wanted to have his son Parker Caine become the source of all evil so that his family could be even more powerful and feared by other demons. Alastor is very manipulative and condescending. He was very impatient and was known to have a bad temper. Some of the powers the Alastor possessed were the ability to mesmerize and compel people to do his bidding, supernatural strength, and temporal stasis.
Hunter Caine
Demon
Hunter Caine is the oldest son of Alastor (Alastair Caine) and the half brother of Parker Caine. Hunter is shown to be a demon who could shape shift which helped him in his career as an assassin. Hunter seems to be a sadistic demon, he does not think much of human lives. Hunter is very violent and loyal to Alastor, doing anything his father asks, even if that meant harming his younger half brother.
Parker Caine
Half Demon/ Half Human
Parker Caine is the youngest son of Alastor and the half brother of Hunter Caine. Parker’s mother is human and thus he is only half demonic. He is referred to as the Shadow Demon. It is believed that Alastor planned to seduce a human so that his heir would be a candidate to host the source of all evil which was his ultimate goal. Parker being half human caused him to be very sick and seemed as if becoming the source of all evil would cure him so initially he did as his father requested of him. Eventually Parker fell in love with Maggie Vera which conflicted his interests. Parker is very confident and outgoing. He seems to hold a different moral code than that of his father and brother. He even seems to be conflicted with his demon side.