Stone Dragons have a tough outer covering made of a stone-like material. They eat rocks, using the minerals they contain for nourishment and to keep up their stone outer shell. They rarely move, and are the heaviest of all types of dragons. Although they have wings, indicating flight ability, no one has ever seen a stone dragon flying.

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.

Nathanial Demetri was named due to her owner's lack of knowledge. Nathanial Demetri is actually a female and is the owner's first dragon. She loves her children and her mate, Nian. Sometimes she feels embarrassed because of her name and rarely have terrible thoughts about herself. Nathanial Demetri usually stays with her relatives and avoid others.