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.

Unlike other Balloon Dragons, Egg Eater is a snake-like dragon. He has no jaw, and like the egg eater snake it likes eggs as its favorite food. Egg Eater has small wings so he cannot fly very well. Egg Eater only eats enemy dragon eggs, and his main target is the Golden Dragon Egg that vanished from his village centuries ago. Nobody knows what has happened to it, or whoever taken it has it or not. Egg Eater is often forced to not eat eggs that he and his mate made, and for a snake-like dragon it's very tempting!