Dorsal Dragons are so named because they have large fins along their backs that can be raised and lowered at will. They use these fins to regulate body temperature; they raise them to cool off when they become overheated. The bright colors on the fins double as a means of attracting mates.

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.

Baegi is a member of the ancient Long clan of dragons, the "Long" surname being a word meaning "Myth of an Immortal (ghost residing on earth, not gone etc. spiritheart) Prophecy of the Moon", or "Flying creature" depending on how it is written, that is used in many civilizations of the eastern part of the world. The Long clan is said to have originated from the eastern part of the world, and could be any breed of dragon, as many dragons of the east traveled to the western, southern, and northern parts of the world after their nests had been destroyed by a ridiculously strong earthquake. Baegi herself had no idea of her historical past until a voice spoke to her when she was but a hatchling, telling her of her ancient lineage.