Caligene Dragons have long been considered omens of death—reinforced by the skeletal markings on their bodies. They exert a malignant force on the world around them, causing other living things to slowly waste away in their presence. Caligenes favor the seasons of summer and autumn, disappearing entirely from the forests they inhabit during winter and spring. These malevolent dragons are physically weak, though this is countered by their natural stealthiness and alarming speed—enabling them to close in on large targets quickly and silently to create ambushes from which prey cannot escape.

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.

Imp of the Mind whispers into the minds of people, pretending to be their subconscious. She never ventures out of her home territory and carefully keeps her cave-treehouse-thing hidden from sight and smell. If dragons and other dangerous creatures wander too close to her abode, she silently creeps to them and informs them, as their subconscious, that it's a good idea to walk the other way or they will be afflicted with a deathly curse. If she discovers that anybody she particularly dislikes is nearby, however, the individual instead will feel a strong urge to commit suicide.