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.

Usaralna, different from the others of the same species in his clan, is not the predatory type. He believes in patience and wisdom, the wisdom from the heart. He always says, "When you fight for your freedom, you must fight for the freedom of others to recieve your wealthiness, and your wisdom will take over your entire life because of that." That is how the Uncita clan won against the Garaillians in war. After killing an animal for prey, Usaralna always thanks the Sprit of Animals, for he knows that it helped him survive. In Mirsapia legend, the name "Usaralna" means "Great Sky Prince".