Each Fever Wyvern carries a unique and very deadly disease on the spines of its tail. To make up for a lack of physical strength, the dragons use this disease to their advantage by poisoning prey and fending off attackers. The illness will quickly render victims helpless before eventually killing them. A Fever will track its prey until the target can no longer move. Usually a solitary breed, these dragons will only come together during mating season, and will flare out the brightly colored sails along their wings to help attract potential mates. Although it has been observed that the wyverns are nocturnal, they will often pick an open spot of sunshine to curl up in and sleep as the day passes by.

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.

While his colors are very much like a normal Fever, this Wyvern has a habit of crushing purple colored things and splashing his head with the juices, giving him a streaked paint look. The Wyvern is rather feisty and hops around flashing his wings to other beings frequently. While he has never explained himself, the others in his small group mutter to themselves that he is just the type to try and court anyone that comes into his sights. The bacteria that he cultivates doesn't do much besides give an elevated sense of luckiness, which the Wyvern himself seems to feel. He says that, even if a spell was going to hit him dead-on, a rock or other object would suddenly get in the way and save his life. Whether luck is real or not, he has never gotten himself injured to any extreme and always finds what he is looking for.