Cavern Lurker Dragons are nocturnal ambush predators. Although small, they are very aggressive and will attack anything weak enough to be overpowered. Their preferred method of hunting is to lie in wait in a cave, burrow, or other small, enclosed space; when any potential prey passes they will lunge out to grab hold of the unsuspecting victim and drag it back into the lair. Cavern Lurkers have an odd aversion to sunlight and almost never venture out during the day. More commonly sighted are the odd piles of bones they stack near the entrance to their dens. Their mating call is a low-pitched bumping noise.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

A sneaky, twisted young Lurker, Koulza has discovered a pool of liquified love, created by an Arsani by the name of Volni, and discovered that this liquid is used to designate dragons in need of lovers, so that Heartseekers will bring them a mate or future mate. With Koulza's twisted nature, she began to plot alongside the cold-hearted Ice dragon, Vexen. She began to bring hatchlings to drink from the pool, and then take them to Vexen's lair. Soon, Vexen found himself with two victims in place of one. A stop was put to this as a Ice dragon named Judgement led a raid on Vexen's lair, capturing and incarcerating him and his subordinates, which included Koulza. She stays in captivity with the Heartseeker, Ansh, and like Vexen, is fed very small helpings of venison. Koulza loathes the taste as well as the feeling of hunger. Although she tells no one, the Lurker has no intent to stop feasting upon dragon hatchlings the day that she is either set free or escapes.