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.

Statue Delta was found along with Wave Delta, Water Delta, and Nilia Delta as an egg at the secret research lab, but nothing much could be uncovered when Statue's human's team tried to check if Statue was infected. Statue's human hopes that nothing happened to Statue as an egg, since the other poor dragons were cruelly tested on with illegal and unknown liquid by the scientists. Statue Delta is a born member of the Delta Clan.