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.

Echidna lives in a very dense tropical forest, and she considers the forest and all its inhabitants to be her "children". As a result, she quickly turns violent when anything in the forest is harmed in any way. This has lead to her being called the "She-Devil of the Forest" by the local human population. She could care less about such things, however, as she has no interest in anything outside of the forest and "her children".

Echidna is antisocial to the extreme and will lash out at any dragon who comes too close. In fact, the only dragon whose presence she tolerates to any extent is Gilgamesh, who lives in the same forest, albeit not the same section. They coexist peacefully, for the most part.