Split Dragons use their sharp teeth and wings to hunt large animals and rarely eat plants. They are intelligent dragons who enjoy mental challenges, preferably alone; Split Dragons are normally solitary except during mating season. When mating, many dragons come together in a group to raise their eggs and hatchlings. These groups tend to be very noisy—reminiscent of a thunderstorm—and last only until the hatchlings are capable of surviving on their own.

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.

Two-headed dragons are unique enough to deserve a separate classification from ordinary dragons. They have two necks, two brains, two mouths, but one stomach and one main body. The two heads usually work together, but there are times when they will fight each other, snapping back and forth. Their unique anatomy prevents them from breeding with single-headed dragons.

Despite being named the Latin word "happy," Festus is one bossy, nasty, and shrewd piece of work. He's often on his brother's case, complaining Hephaestus never tries. Yet he gets very jealous when Hephaestus steals the spotlight. Once, he even attacked his brother and ripped his left eye out.

However, both brothers need one another. Festus refuses to acknowledge just how much. Without Hephaestus, Festus would live a very lonely existence. No one else can stand being around him for too long.

Hephaestus, however, would be alone for very different reasons. He doesn't have high self-esteem; he never has. He thinks himself completely socially inept. Without Festus dragging him around, he'd be sealed off in his cave, quietly working on some rather ingenious inventions.

Some part of Festus knows he needs his brother. Once, his brother got very ill. While he was treated, Festus was far more obnoxious than usual, a smokescreen to hide how terrifying at the thought of losing Hephaestus was.