Dark Lumina Dragons received their names from their highly reflective scales, which—at times—seem to glow. They are vain, always strutting about and preening incessantly; if one of their scales has so much as a scratch or a defect, they’ll remove it. Luckily, their scales grow back quickly, and each new growth is more beautiful than the last. These narcissistic dragons live in small groups and prefer to surround themselves with beauty. The males guard their territory and eggs while the females search for meat to eat. Dark Lumina Dragons are much meaner than their cousins.

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.

Black Pearl Luster is the brother of Diamond Luster. When they were young, they were quite competitive, always looking for ways to one-up each other and always putting each other down. Things changed when Diamond Luster settled down with Shield Tail and Dark Drakon's dragon herd and developed a much kinder personality. When Black Pearl Luster found out his sister had gone 'soft,' all illusion of sibling affection was brushed aside and the pair became openly antagonistic, with Black Pearl Luster severing all ties with his sister. While Black Pearl Luster has become an antisocial lone dragon, Diamond Luster still loves him deep down, and hopes that he will eventually change for the better.