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.

Philip of Castile I is outgoing and brave...when he's not anywhere near his insane mate. Mighty in battle, he used his prowess to found a dynasty that lasted over a century, no mean feat in a region torn by dragon-battles. Unfortunately his mate is incredibly jealous and prone to fits of insane ranting and firestorms, so at home he spends his energy trying to keep her happy and at peace. This is very exhausting, and in the end futile because Joanna of Castile has no problem blasting the wings of any unfortunate female dragon who got too close to him. Male hellfires are subordinate to the females, so he much endure her abuse in painful silence.