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.

Silvester is the most violent of the Dark Green Dragons in the Wolfs Howl Clan. He is the one that attacks Wolf the most, sometimes even holding his Master inside his 'nest' for days at a time until Enki comes to Wolf's rescue. While Silvester attacks and hold his Master underground, he has yet to do any damage that would kill Wolf. None of Wolf's other dragons know why Silvester acts this way toward Wolf since he doesn't even try to fight the other dragons, not even other Dark Green Dragons.