Gold dragons are the ones most often killed by humans, who consider their scales to be extremely valuable. These golden scales grant them a high level of protection, similar to armor, and they use this to their advantage in battle.

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.

Niea is the young mate of Thesaurus. Playful, while observant and smart, she seems to have the ability to constrain him very easily and to see beneath his exterior as a great dragon. And so she can't help but think that her partner is nothing but an lovely, clumsy, and adorable jerk. She is an lovely, gentle, and docile creature that seems to light everything around her with her kindness. She is both comprehensive and at the same time courageous but rarely gets into any fights, preferring to flee rather than fight. She came to this cave seeking refuge from the humans who hunted her constantly to catch her golden scales. Shortly after that they met each other, and Thesaurus did not waste time on courting her or trying to show off but she always dispensed him with a very good mood and made him embarrassed. It took quite a while and years of coexistence to notice, but in the end they found that both really loved each other, so Niea took the first step and after that they became mates.