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.

The main henchman and a close friend of Uranium, Thorium is certainly one of the most respected dragons beyond the Stability River. He is extremely serious, very strict and uncompromising when it comes to others following rules and sticking to proper procedures, leaving no room for improvisation. Not caring much for pleasantries, he always speaks curtly and straight to the point, and his deep, thunderous voice and threatening glares make him all the more intimidating. Almost everyone who's met him is terrified of him, and even the bold Uranium will do a double take at times. As such, Thorium regularly gets away with anything he wants without any protests. He hasn't always been like that though, certainly not before he was forced to leave the Periodic Clan's main territory with Uranium. Once a bright, radiant personality, even close to Magnesium of all dragons, life in the Seventh Period has changed Thorium beyond recognition, and he now considers those days hopelessly lost in the past.