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.

Yuudai means "hero". He works hard to live up to his name; the other dragons in his clan think that he's doing a good job. Every morning, he'll fly up into the sky and check for enemies with his friend Min. If there are no enemies in sight, he turns and flies towards the forest to hunt beside Min for nourishment for the elders in his clan. However, if there are enemies, Min will fly back as quickly as he can to warn them, and Shou will be prepared to battle the enemies. And every night, he will stay up late to ensure that no foes will attack them, and let his clan sleep in peace.