Bright-Breasted Wyverns are a breed of dragon easily recognized by their bright red markings. They are a small breed, only the size of a full-grown man. However, they have developed poisonous barbs on their feet to make up for their size. Their coloration is used to warn off potential predators of the danger, and is also used to attract mates. They are very social, and can often be seen preening in large groups.

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.

Fern is the oldest dragon in Princess' cave. She is in charge of keeping the cave in order. She's small and is often seen either watching over the hatchlings or flying. Fern is a kind and gentle dragon, always willing to help out. Her best friend is North Star. Fern is very social, but prefers spending time with Princess. She also help pick out the new eggs to bring back to Princess' cave, a large cavern and ravine located beside a glacier and salt water lake. There are also many hot springs and geysers in the area that create warm thermals that Fern is often found flying on.