"Analogous? I think? It operates under way different rules, though, so probably let's not overplay the comparison ..."

He pauses to organize the information in his head, and then lets out a short breath before starting. "It's from my world, and it says it's basically the first and ultimate incarnation of evil. It can take on the appearance of anyone who's ever died, whether or not they've come back to life again. It's incorporeal, so it can't touch or move any material objects directly, but it's got a posse of servants called the Bringers or Harbingers, and they can."

He swallows and adds, lower: "And some of them have already. Here."