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.

Blue Supergiant, taking after both parents, is a painter, a "logical" painter, if her brand of "logic" can be considered as such. For instance, if asked why she chooses a particular item for her paints, she will answer in the vein of: "This piece of metal weighs ten pebbles, so I will break it so both weigh odd numbers. Even the humans are interested in the shade of sunshine yellow the metal creates, humans are bad news, so that's why the chunks can't be even. Also, these are what I call "fish stick" metals, because no one uses fish sticks for pigment, and no one should eat this metal. Therefore, this is the perfect item to use to make paint. All I have to do is take care not to touch it with both thumbs, and I'm sure even you understand the math in that..." By then, the listener usually just leaves Blue Supergiant to her own devices. At least her paintings of the sky are interesting.