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.

While Korallekehl never knew his parents, rumor has it that they dwelt on a coral atoll in the Caribbean. When his egg was brought back to Yggijo's cavern, it was accompanied by a piece of hot orange coral on a short length of twine, tied snugly yet gently around the egg's circumference. As a hatchling, Koralle wore this around his neck, and now that he is full grown it hangs around one ankle, picking up the brilliant color of his chest down by his green talons. He is strongly attached to the sea, and perhaps for that reason has a shockingly good relationship with his mate's father, Dornstrauch, whose parents also hailed from an island. Even as a hatchling he got along famously with the older drake, and has absorbed much of his nautical sense of humor and love of the harbor.