Urglid

The hulking monstrosities known as urglids form from the souls of murderous undertakers, sadists who buried their victims alive, and intentionally neglectful grave keepers who gave up their watch over the dead. They seek to perpetuate their mortal sins as demons and use their fiendish powers to subject mortals to the terrors of vivisepulture. Other urglids find grave sites repulsive and will often destroy headstones and other grave markers. Without such markers, these graves are often lost and forgotten, a detail that pleases an urglid. Standing over 12 feet tall and weighing over 3,000 pounds, the demon has a head that seems sunken into their torso, and a gaping, toothy mouth that opens at the top of their chest.