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.

Darkcry, a Pyro Xenowyrm, and also the ruler of a kingdom, was out on a Halloween night when he met a beautiful Caligene dragon with whom he secretly became mates. When they accidentally had an egg (Cairo Khufu), Darkcry ordered that his mate kill it. She said she would but just couldn't. Instead she abandoned it so she didn't have to kill it herself. Having a mate had taught her some compassion. Cairo Khufu survived, but he somehow remembered what his mother had done. As an individual, Cairo Khufu is cold, cruel, thoughtless and just downright mean. He terrorizes poor souls, constantly searching for his mother so he can end her. To him, that is the only form of revenge suitable.