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.

As a hatchling, Lukoil had a nice life. When she started to mature, she was abandoned! She was tied to a tree, until a kind human came along, and took her home. The human had other healthy hatchlings as well, so Lukoil could tell she wouldn't be abandoned again. Now she's a fully grown Balloon dragon. The hatchlings like to jump on her belly, because it's always filled with air. She doesn't mind; she's just happy that the hatchlings are happy.  When it's time to gather food, Lukoil just floats around, collecting fruit at the tops of trees. She happily gives it to the hatchlings.