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.

Haidar is surprisingly mobile for a Dark Green dragon, often changing his position within Damian's oasis on a daily basis. A master of camouflage, he twists his vines and flowers into elaborate shapes to resemble harmless plants, animals, or even other dragons as a method of luring prey. He is openly hostile and bestial, but all attempts by the other inhabitants to drive him out into the desert have failed. It seems that the intense heat from the lava cave beneath the oasis provides him strength and sustenance beyond his usual carnivorous diet.