Because of their dual personalities, Duotone Dragons are extremely nervous and indecisive. When confronted, it is often the case that one head wants to fight while the other wants to run, resulting in the dragon trying to go in two directions at once. They are omnivorous, choosing to eat both vegetation and meat—although perhaps this is just another outcome of their indecisiveness.

Both heads can control the body, with each head having only marginal control on the opposing side of the body; this works when both halves want the same thing, but does not work as well when there is a disagreement. Despite this, Duotone Dragons can fly quite well, but can crash through the trees if one head becomes distracted.

Duotone Dragons can fight, using their large claws and heavy face plates to rend and bash their opponents.

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.

When his owner came back from the abandoned pile one day holding a Duotone egg, Deuteronomy was triumphant. He couldn't believe it—he had a young dragon of his kind to take care of! But one of his heads wanted to know why their owner had gotten another Duotone when she already had them. She admitted that she couldn't help herself...and now she has two full-grown male Duotones.

So that the others in their owner's cave can tell Kings and Deuteronomy apart, Kings' purple side wears a small crown on his head.

The difference between the two Duotones is very clear: Deuteronomy's heads are quite serious and quiet most of the time, and Kings' heads love to have fun, and are always loud and happy. Kings' brown half often goes by King, and the purple half, who wears a crown on his head, goes by True King. King doesn't like their nicknames, but is still just as happy as True King all the time.