Dark green dragons, once they mature, appear to become an entirely different species. However, this isn’t true. Rather, they burrow underground and get nutrients from their vines. These vines are sometimes referred to as Dragon Grass. These dragons are very violent, and will use their vines to capture, kill, and eat anything that moves, as well as nearby plants. Luckily, their range is limited and they cannot use magic. Dark green dragons tend to be easy to spot since they usually kill all plants around them and thus are usually surrounded by a large clearing.

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.

Cadmium is a persistent, stubborn dragon who will rarely take into account anyone's opinions but his own, and he is a major pain to reason with. As a rule of thumb, it's generally not a great idea to approach him if one doesn't belong to his small circle of friends. He has quite a bad temper and even if he's in a relatively good mood, there's no guarantee that he won't suddenly lash out.

Inconsiderate as he is, Cadmium has settled down in the treasured garden of his sister Zinc, completely destroying it in the process and refusing to budge until even she gave up and decided to leave. The only flowers he has left to grow around himself are those that resemble his own—that is, red and yellow ones. Cadmium uses these to make pigments, as he has an unusual fondness for painting. He considers himself a great artist and other dragons assure him of this frequently, mostly in order to not become dinner.