Black Marrows are named for their dark colored hides which are encased in a distinct exoskeleton. Their skull and the top edges of their spine push out from under the skin as they age. As such, their young need excessive amounts of calcium for this armor to develop. The older a Black Marrow dragon is, the more skeletal their appearance. They often use their skeletal looks to lure in foolish scavengers or terrify predators. These vicious dragons love nothing more than to crack open bones with their stony beaks and eat the marrow inside. Voracious scavengers, Black Marrows will swarm and devour corpses both old and fresh, sometimes even dragging larger finds to the water to allow them to “ripen.” Despite their dreadful demeanour and often horrid stench, Black Marrows are devoted mates and parents.

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.

Many dangerous types of dragon emerge to breed during the late Autumn months, roving males and unusually aggressive females making it a more deadly time of the year than most for humanity. Accordingly, many parents caution their children over and over to not stay out too late on All Hallow's Eve; "collect your candy, child, and then come swiftly home." Most children obey and spend the rest of the night peacefully enjoying their treats, but those children who loiter too late may encounter a different sort of trick indeed. As they travel the long road home through the deepening dark, they hear before they see; a rattling hiss, snapping leaves, claws scraping across stone. They turn with wide eyes to see her, a massive Marrow of powerful build, red eyes gleaming--just before she screeches "MINE, MINE FOR THE TAKING!", snags their candy, and vanishes back into the darkness. Her less-than-lethal nature is likely inherited from her gentle Autumn father, as her mother is a known man-eater.