Hellfire Wyverns are so named for their foul tempers and fiery visages. Their social structure places all females above all males, due to superior physical characteristics and violent dispositions. Forced subservience of the males causes them to become vicious, petty, antisocial, and passive-aggressive compared to the aggressive and social females. However, orphaned hatchlings raised by foster parents of another species can develop surprisingly even tempers and mellow dispositions, proving that their defining unpleasant nature is, in fact, a learned behavior.

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.

Xienao belonged to a highly respected and vicious family of dragons. However, as an egg, he was stolen by another dragon, mistaking it for her own. When she realised it wasn't, she simply dropped the egg, and left Xienao to die.

Left for dead, Xienao was fortunate enough to be adopted by 6 wandering dragons. These were outcasts among their breeds, and kept together, for comfort and safety.

Xienao choose not to keep his family name, but to take the first letter of each of his adopted parents names.