Named after their cloudy, ashen scales, Ash Dragons are large, gentle beasts, although their faces can give unaccustomed folk a fright. Their tough scales and sheer size make them infrequent attack targets, traits that explain why pygmy dragons and other small dragon breeds can often be seen riding on their backs, hiding amongst their large spiked scales. Though they tend to be mostly quiet, Ash dragons have a low, deep roar that is typically only used to threaten or call to others of their kind.

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.

Finlay is Biscuit's first egg, and the closest of them all to Biscuit. She is very protective of all the dragons in the cave, and very powerful against foes. Despite her deep roar that intimidates all the hatchlings and intimidating appearance, all she wants is to be the kind and caring dragon the hatchlings grew up to see her as. Finlay is also the original Keeper of the Cave, an organization of Biscuit's dragons that serve to protect Biscuit and the other dragons, as well as hunt for the prey that fulfills the mature hatchlings' hunger. Finlay has turned out to be a brilliant hunter.