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.

Intruders entering the cemetery will note a convincing Black Marrow statuette. Lean in for a closer look but don't wet yourself when thing turns his head and glares, his crimson eyes laced with an unspoken threat. It's no statuette but Horrix, one of the two cemetery caretakers.

When he was little, Horrix was caught scavenging off the bones in the cemetery by the caretaker. Pelseo struck up a deal with him. Horrix would help guard the yard and in exchange, any dead, unclaimed Creorlunites brought there were his.

But he struggled to restrain himself. He secretly snuck pieces of the corpses. After one such incident, a vengeful spirit attacked him. He was petrified and hid until a young hen found him, who calmed him. He felt at ease around her and asked if he could see her again. She smiled sadly and said "Any time," then vanished in a cloud of silver smoke. He'd been unknowingly talking to a ghost.

Never again did he eat the bones of anyone but those Pelseo gave him.