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.

Rubielle didn't understand for a long time why Pepper was so hateful toward her and jealous until she discovered that her coloration was both rare and desired for her kind. Unlike Pepper, she has never been vain about it, much preferring mental strength and independence in others rather than appreciation of her aesthetic. She couldn't explain why she felt drawn toward Lord Allium Cercdipe to mate or why she abandoned their first offspring. Perhaps one day the understanding will come to her. Until then, she has very little regret.