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.

Often called by his tamer as "That one dragon that never moves", Unmova is exactly as every single Stone Dragon regarding her movement. But she takes it to an extreme, basically, she's been seen moving just twice by her tamer. The only two times she moved were for eating, and she didn't take more than ten steps. Maybe she just likes to move when her tamer is not watching her.