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.

He loves mechanical things, the things humans call 'machines,' studying them, taking them apart as well as he can, learning about the different parts that make them go, and building things of his own (as well as he can with his stubby claws). He's particularly fond of the parts the humans call 'wheels,' noticing with interest that they help more than anything else to move things around and push things for the landbound humans. His mate, Ejilsis, helps him with his projects when he can't find pieces or he can't quite maneuver them into the proper place.