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.

No one really knows where this Caligene Dragon came from, but Azarath Thestral was spotted for the first time one autumn night by members of Sol Orb's dragon clan. On account of the dragon's appearance and the ominous feeling surrounding her, they concluded that Azarath was one of the evil Devidra's followers and drove her away. However, a day or so later, Rockjaw found the clan's hatchling, Celestial Windshear, calmly conversing with Azarath. The pair discovered that Azarath was actually a benevolent dragon, and was deeply impressed with how little Celestial was able to look past her terrifying appearance. Ever since then, the three dragons became close friends, and Azarath became something of Celestial's secret guardian angel. Sadly, Rockjaw and Celestial knew they could never tell the others about their new ally, as doing so would mean revealing Celestial's secret talent of seeing into the hearts of other dragons, which could result in Devidra targeting Celestial directly.