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.

Kellamaru is a female Black Marrow that acts much differently than one would expect. While she still practices the voracious eating habits unique to her breed, she is a very gentle soul, strongly disliking violence of any kind, and she loves to be around hatchlings and human children. She is indeed an older dragon, though this hasn't stopped her from placing young hatchlings on her back and flying low over the ground. When she isn't around younger individuals, she takes pleasure in quiet talks about nearly everything, though her favorite topic to cover would have to be recent events. She likes to be informed of the world around her, though she almost never leaves her cave. "I've had my time to explore the world," she says, "the young ones will get much more out of it than I will."