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.

Alhena is a quieter dragon who loves to take care of the hatchlings in the Nebula clan. Other than taking care of hatchlings, she likes to hunt for the clan. She hates the leader, Galaxy, with a passion due to his biased views on lineage hierarchies. She's more respected in the clan compared to her friend, Aurita, since her lineage hasn't been deemed 'really bad', but she hopes one day that every Nebula dragon isn't defined by who their parents were.