Nhiostrife Wyverns are one of the few known breeds of wyvern with more than one set of wings. Because of their four wings, Nhiostrifes are very nimble in the air and control their movements with ease. When it’s mating season, males put on a very beautiful and unique air dance in an attempt to charm a female. The amount of stripes on their wings vary, with more stripes being more attractive, although most have only two to four. Their general attitude is very passive and curious—they only fight if they or their families are in danger.

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.

Rebrinth was named as such because his heartbeat stopped for several consecutive days as a hatchling. When nearly all hope was lost, his caretaker attempted to revive him through magic, and his heart began to beat once more. He became as energetic as before, and quickly matured into a full-grown, capable young dragon.

When he was young, he was somewhat careless; but ever since his "rebirth" of sorts he has been very protective of the lives of those who are important to him even though he hates fighting and would prefer to fly away. He's especially kind to young dragons and always feels sad when some die like he did. So many cannot be revived, and he feels an overwhelming sense of humility and thankfulness regarding his own life whenever his caretaker's revival magic fails and a young one is lost.