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.

Being the first of three hatchlings, Vendelin grew up with an instinct for protection for his family, coupled with anger when he didn't receive the proper attention due to him. Whether with the human who reared him or his mother and father, Vendelin would lash out with his vines, striking anyone who tried to ignore him or failed to praise him for looking after his siblings. He seemed to feel that no one noticed him, and when he did a good deed and was forgotten, he'd make the transgressor remember. Upon growing up, he burrowed underneath a marsh, where his dragon grass strangled anything that strayed too close. His reclusive nature and proneness to anger make him lonely, which in turn causes him to brood even more. His family and human handler watched sadly as he became more and more solitary, and few dare to venture over his swamp on foot.