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.

Nikola and Markatos are logical and analytical. They choose to process every step, from one through ten. They do not like to skip or miss anything. Their method of processing cannot be rushed. They need to analyze and comprehend the logic in each step before proceeding to the next. Nikola and Markatos like to establish a firm foundation, and then slowly build brick by brick, step by step. Otherwise, they are afraid the entire project will collapse on them. They typically form habitual patterns. They are more comfortable repeating the same duties day after day. They don't like their routines to be altered. This is because Nikola and Markatos only have marginal control over their shared body, this forces them to corporate and focus immensely together to achieve something. They are inflexible and unadaptable but they make up for it with their reliability and dedication. The moment Nikola and Markatos are used to something it doesn't take long for them to completely master it.