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.

As an egg, Prizion somehow managed to roll out of his nest, and landed in the cave. He was picked up by Robin, who was at the time looking for a new egg to adopt. Now fully grown, he is Robin's pride and joy.