YMMV / The Adversary Cycle

• Complete Monster: Rasalom is an ancient Evil Sorcerer who embraced a role as the champion of darkness in forgotten eons. Defeated by his Arch-Enemy Glaeken, Rasalom was sealed into an old keep in Europe until World War 2. Posing as a vampire, Rasalom convinced a Jewish teacher to aid him in guise of being a Noble Demon fighting the Nazis. To gain power, Rasalom murdered the German soldiers and revived them as enslaved undead until Glaeken returns to destroy him. Surviving by binding his soul to an unborn baby decades later, Rasalom emerges to take the world itself: plunging the world into eternal night before driving human beings to insanity and murder while unleashing monsters that kill the populace indiscriminately. Rasalom only spares the now elderly Glaeken's apartment solely because he wants Glaeken to see the world he loved burn before Rasalom kills him slow. He's also angry one of the humans nearly accidentally caused his host-mother to miscarry and plans a similar fate for him. Even in the dark world of the Repairman Jack and The Adversary Cycle books, Rasalom stands unique as the greatest monster the saga has to offer.