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 females guard their territory and eggs while the males search for vegetation to eat.

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.

Sellers took the surname of the human family who cared for her. By coincidence, she is now a vendor of... everything she can find and has deemed "sellable", it would appear, from bug pigment to manuscripts she's unable to read to crates that fell of the back of a wagon. Her success on any given day of showing off her wares is luck-based. Sometimes, she has exactly the kind of things a customer needs; other times, she's discarded or ignored goods that people would genuinely find useful. Sellers is happy to trade for cleaning tools, such as brushes, brooms, and lint rollers, and if buyers pay in cash, she uses that cash to purchase cleaning tools.