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.

Rettle is a vicious character; she is aggressive towards everything and is a deadly dragon. She is small, and even with her dark nature, she'd never attack any other dragon unless is smaller than her, or of her own species. She was once attacked by another dragon and still hasn't gotten over it, nor forgotten it. Rettle also likes to move burrows a lot, hunting for new prey. She will normally move to another burrow that is inhabited by another animal, and kill the creature and take the burrow for herself. She makes great tunnels in her den, and her underground home can sometimes stretch in an area of 20 metres, with several different exits for her to prowl. Her vines flowers are poisonous; they stun any prey that gets in contact with them. Rettles fangs also do the same damage.