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.

Seririn Rejected, like Les clan's two other vines, Verrda and Berrythorne, was found abandoned as a hatchling; it is assumed that this was because they weren't alts. It appears he has no speech ability other then roaring and the occasional growl or bellow. This is blamed on the fact that Tsaaren allegedly dropped Seririn on his head bringing him back to the cave, though there is no proof of this. He appears to be the chosen mate of Berrythorne, though with their equally bizarre personalities and habits, it is difficult to tell.