Storm Dragons are the masters of the skies. They are excellent fliers and land only to rest and eat. In addition, they have full control of the weather. They are very hot-tempered and easily angered. They will attack any human that bothers them, conjuring strong winds and dangerous lightning.

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.

Bylgja is the youngest of her clutch and the tomboy of the group. She is one of the few that truly get along with Jarila and often helps her with some of her more harmless pranks. Her temper is well known throughout the cave, and though it may be slow in coming, can erupt like a volcano.

Bylgja is named for one of the nine billow maidens of Norse Mythology. Each one represented a different aspect of the ocean waves, with Bylgja representing the billow of a wave.