Radiant Angel Dragons are known for their intuition—they always seem to know when someone is feeling down, and will do what they can to provide cheer. These dragons are curious and will poke their noses into anything. They communicate with one another by making sounds similar to singing. It is said that the golden feathers shed from their whiskers can rekindle lost feelings of love.

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.

Kalocgurian and his brother, Sarbineas, are powerful yet kind Radiant Angel dragons. Unlike his carefree brother, Kalocgurian is stern and controlled, keeping a level head during times of conflict. He is as of yet unmated, and seems to refuse any mate that Kiryu suggests for him. Though he bears a peaceful demeanor, he has gotten into several arguments with the resident dragons over joining one side or the other in the sparking war against Aszalia'xai. The Vampires want him for his rarely-shown combat prowess; the Nebulas want him for his coolheadedness and intelligence. The result is Kalocgurian, similar to Sarbineas, staying out of the fight entirely. A warning word is usually enough to send a recruiter away, and if not, a snap of his jaws will do the trick.