Blu Gładki

"A 21-year-old Polish-American witch from rural New York. He's been haunted and tormented by an eldritch being known as the Overseer since his teen years."

Blu is a Wiedźmak (Polish witch) that specializes in apotropaic (protection) magic and the use of magic circles, seals, and sigils.  He's extremely paranoid and has a dark past involving an eldritch being known as the Overseer that's been haunting him since his teen years.  He can see and communicate with spirits, as well as summon and control many of them.  One of the spirits that he's frequently seen with is his familiar, Pooka, who is a trickster spirit with a foul mouth.

He lives in the middle of the woods in a two-story cabin by himself, which is fortified inside and out with warding sigils and items.