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.

Until recently, Talfagoron's status among the Fell Beasts of Mirkwood was that of a typical male; a pawn for battle and reproduction. His lot in life was to obey the females and eventually die.

But then he managed to do something none of his kind had ever done before. He was able to produce an egg with Nazgul, one of the four Marrows that reside within Mirkwood. The Fell Beasts regard those four Marrows as overlords of evil, so naturally being the first of his kind to successfully breed with one has landed Talfagoron with the status of second in command—a spot rarely held by a male.