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.

Lurker has always been a solitary and cold dragon. He prefers staying in his cave, counting all the gold he has collected rather than talking to other dragons, which he refers to as a distraction. Nobody is sure why this dragon is so quiet and lonely, Electra believes that it might be because he never got much attention when he was young, and perhaps he got used to having to depend on himself. So far, nobody has ever been able to pierce this dragon's cold heart. Others have tried to have a conversation with him, but quickly gave up on Lurker, leaving him alone.