Ghouls
Ghouls are the foot soldiers of Hezekiah's undead army: the risen dead, three times as strong as an ordinary human, with a bite that poisons whoever it touches.
The risen dead
Every Marked One who dies rises as a ghoul. Their bite carries a venom with no known cure: a deep bite kills within a day, a tiny one within a month. Only the Mark itself can stop it.
Ghouls can sniff out the trails of the Marked. They roam the Outside World in Undead Patrols of more than a hundred, hunting those who try to escape.
Spoilers up to Chapter 8Tap to reveal
The Undead Patrol that comes through the dead portal travels with something else: an unseen creature whose victims freeze in terror, die, and rise as ghouls.