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.

Subotai is the second son of Kubilai Khan and Elaserra. Extremely perceptive and cunning, he is a curious dragon, always up for a challenge, eager to learn, and determined never to give up.

He greatly enjoys teasing and sometimes manipulating his younger brother Temuel, whom he loves dearly, as he does his oldest brother, Yesugei. Aware that Yesugei has taken on the responsibilities of leadership, Subotai tries to be supportive of his brother and leader. Though he is thankful that this burden is not his to bear, on occasions he feels his brother is wrong, and because of his passionate nature, he will do anything to try and set things right, even if that means working against Yesugei.