Webbed sentinels were created by dark elves soon after their retreat into the subterranean world. To deter pursuit by surface elves (and attack by other underearth races), drow necromancers fashioned these creatures made from the most common element they encountered—spiders and their webs. Webbed sentinels patrolled the areas surrounding drow camps and, eventually, fledgling drow cities. After the dark elves managed to establish a firm hold in the underearth, the webbed sentinels were released from servitude to roam the subterranean world, inflicting fear and death on all they met. Dwarves and underearth gnomes each share similar tales about the sentinels and teach them to their children as dreaded nursery rhymes.