Storm Dragons are the masters of the skies. They are excellent fliers and land only to rest and eat. In addition, they have full control of the weather. They are very hot-tempered and easily angered. They will attack any human that bothers them, conjuring strong winds and dangerous lightning.

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.

Less can be said of Nitrogos than of many of the Den's dragons, as he has been aloof and fairly non-social since he first hatched, and he doesn't really talk about much even when he is around; most of the time, no one would know he was there. But, he is a very sensible dragon, and is certainly skilled at what he does. He also has a leader-like air that easily commands respect from all the Den's dragons, and even outsiders, without his even having to say a word, so he spends much of his time as a sort of sentry. He always seems to know what is going on, even though he rarely shares this knowledge, unless he believes that it somehow affects the security of the Den.