Knight Inquisitor, monster hunter, veteran of Eisen's War, and the author of the entire San Cristóbal arc, a fact he confessed with a magistrate's pride: "It was I who sent the invitation… Not chance. Me." The masked courier, the ball, the years of observation in Eisen (a countess who does not age; a lord who outlives his own records), all of it was casework, and the company was invited "not as guests, but as evidence."
His trap was not built to kill. The silver chair and the salt circle were an exorcism: both souls, to hell. He calls that mercy, and Eisen's wars insufficiently finished.
Count your days, von Dämmerung. Creatures of your ilk must return to the earth of their homeland. And Eisen is my homeland too. It is there that we shall finish this.
Two more charges against him. He broke Dr. Gerhardt over weeks and asked little because he knew much: three generations of von Dämmerung, minimum. And at his own ritual he knelt to a thing wearing the Cardenal's shape and gave it silver "for services rendered." The monster hunter works for one. Whether he knows what it is remains the best question in the campaign.