Nebula Dragons are nocturnal creatures. With the best eyesight to be found, they are often seen staring into space. Each dragon tends to observe a particular nebula and will eventually change their colors and patterns to match it. As the nebula changes over time, the dragon changes with it. The more intricate the design of the nebula, the better chance an individual has of attracting a mate. It is said that the markings on no two Nebula Dragons will be exactly the same.

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.

There is never a dull moment for Nheythor, and he makes sure of this. Nheythor was found as an egg on a sandy beach by his current rider. He was raised in a similar fashion to the other dragons, but he was given special care: after all, the cave had never seen a Nebula with green coloring. Nheythor was mentored and educated by the cave's dominant Nebula, Asuma-Nii. Under Asuma he learned to read and write the human language and understand the pattern of the stars. Now Nheythor works day in and day out to teach dragons and humans alike all he can about the stars in the sky. His constellation is a distant one, hidden behind the Bear, so far off that only Nebula eyes can see it.