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.

Barium is, frankly, quite the obnoxious dragon. One can always tell he's coming from a mile away, and wherever he shows up, it's impossible to overlook him as he tends to take up the most space and, without exception, be the loudest one around. He's crass and tactless, making no effort to censor himself, and manners go right out the window. Crossing all sorts of lines and boundaries is Barium's specialty, and he has no problem discussing completely inappropriate or all-out disgusting topics in public without thinking twice. He can get straight up cruel when annoyed and has a habit of picking on others for no reason other than that they've looked at him funny, or he's simply had a bad day, taking it out on dragons who have nothing to do with it. While he can be crude in a sort of good-natured manner if he's in a pleasant enough mood, he's practically unbearable to be around even then, apparently unaware of how uncomfortable he can make others even when it's not intentional for a change.