Balloon Dragons are so named because they are filled with a gas that makes them almost lighter than air, similar to balloons. However, they are not prone to bursting, as they are covered in tough skin and can deflate themselves if necessary. In addition, they generally are slow moving. They use their gas bladders to float to the tops of trees, where food is more abundant. They can shift their weight from their backs to their fronts, allowing them to reach leaves and fruit.

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.

Like others of his kind, Y U NO DIE spends his time high up in the trees, chittering between mouthfuls of berries and nuts he finds. He has a rather interesting relationship with his father, and rather than act coyly around parental figures as some dragons do, instead he will proclaim his own name over and over. For this reason, most of the dragons in the clan try to avoid being caught in the same space with these two. This excludes KEEL IT WITH FIAR, whose rigorous interruptions into their affairs can only be described as disturbingly fanatic. Visitors, on the other hand, are amusedly curious about the dysfunctional relationship between father and son. The explanation that the father's name is Myspace is usually sufficient and is often met with an "Oh, I totally get that" or sympathy for poor Y U NO DIE. Occasionally, the more enthusiastic will insist: "LOL, I'm going to status this."