The Tall Man typically amputates the minds of his victims by placing their brains within the Sentinel devices, thus creating Lurkers and Sentinels simultaneously. The Silver Sentinels patrol the Tall Man's territory and seem to attack mainly on instinct, as they are capable of harming the Tall Man himself if he is caught offguard. The Silver Setinels also double as keys in the Tall Man's lair. Which has doors that can be only open through a special lock in the shape of concave hemisphere with two slits to fit the prongs.







