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.

As his mother's first child Kuro Draco was raised with more love and attention than he could cope with. Hanna, being overjoyed at finally getting the family she had long waited for resolved to never let her mate her child want for anything, which led to Draco not having much to look forward to due to already having it.

Wishing to break away and discover things for himself Draco left the clan as soon as he was of age to embark on an adventure. Since then he has not been seen in person by anyone, although he regularly sends messages home to prevent his mother from worrying too much, provided he leaves out a few of the more dangerous details.