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.

It's a kind of running joke among the dragons of his clan that the Hellfire Wyverns are surely fallen angels, since they are generally well-mannered and nice, thanks to their unusual up-bringing. But since they have joined the clan their eggs surely must have fallen down to earth.

Cuffed came to the clan at the same time as Ruby Lilim and both Hellfires are inseparable. Although to most the 'fallen angel' bit is just a joke, as far as he's concerned it's true—at least it is true for Ruby. Cuffed does his best to prove himself worthy to his chosen mate.