Leper Monks are elite monsters encountered in Town in Chapter 2 of Painkiller and later in Ragnarok of Painkiller: Overdose. They wear ragged grey clothes and wield staves staves with skulls on top of them. On the head they also wear a masks with horns and holes for the eyes. They are very dangerous due to their power of telekinesis. At a distance, they can pick up lying corpses and throw them at the player. In melee, they can push a player back thanks to their powers and dealing much damage. Fortunately they are not immune to freezing, so you can shoot them with freezer and then with shotgun.
They drop Red Souls on death, which recovers 6 HP instead of 1.