Magelight Pygmy Wyverns make their homes deep under the earth, and produce a flammable, oily secretion from the tips of their tails to make light. The substance is long-burning, and brooding mothers douse their eggs in the oil while they incubate. Hatchlings’ tails subsequently catch fire at birth after coming into contact with their burning shells. Magelights are useful to human miners, as they are docile and easily trained to alert to the presence of methane damps, caved sections of tunnel, and proximity of nearby dragons to ensure the safety of crews.

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.

Pygmy dragons are the smallest category of dragons, being on the same scale as domesticated animals. They are often found around concentrated populations of dragons, relying on their larger brethren to ward away potential predators and leave scraps. As such, the majority of a pygmy’s diet is scavenged. Due to their tiny size, pygmies do not breed with larger varieties of dragons.

Oiw lives in the east side of the disused Beongae Mine, in the room with the six Never-Out Torches and a bronze chest. He puts things into the chest whenever he finds it's been emptied, and he polishes the tile puzzle in the neighboring room. He and a few other dragons take care of the mine in their own way, hence why the place is still in decent shape and contains treasure. The nearby towns even chip in to provide metal for the keys and various goodies because they've been getting more visitors lately. None of the adventurers who come to Beongae Mine to explore, unlock doors, and find treasure seem to question why chests refill with loot after a while and who's leaving more keys and locking doors. Maybe they think they're the first ones to explore the mine. To Oiw's delight, his mate, who doesn't like caves and other dark, enclosed areas, will join him once in a while to bring him food and help him with his tasks.