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.

Up on Mount Hagsip, deep inside the caverns inundated with boiling lava, the Hellfire dragons of EG's Cave roam. This particular Hellfire, Highway to Hellfire, has been put in charge of keeping other dragons out of their territory. Due to his nasty personality basically written in his genes, he has absolutely no mercy when dealing with intruders. Several dragons, filled with temerity, have ventured into the Hellfire Caverns, but none have ever returned.

Usually, only the males venture out during the day or during crowded periods on the mountain since the females are the most ferocious of the bunch. Only the males such as Highway to Hellfire are able to bite their tongue and grouchily go about their business.

Highway to Hellfire has been chosen to lead all of the Hellfires in EG's Cave since he was born in a foreign land and raised with all of the leadership qualities the job requires. All of the Hellfires respect him and trust him to keep them and others safe.