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.

Fi'Blene was second of the Second clutch to mature, nest mate to Cygnis' Comet, Wild Will of the Sea, and the nameless black male.

While prone to sudden anger and aggressive behaviors, she is still rather even-tempered for a Hellfire, having been raised in captivity. Mother to the Bright-Breasted Wyvern, KthR5, by Cir'Riaf and the Tri-horned wyvern by Vexcul Alizarin.

A member of the third clutch hatched before Fi'Blene matured.