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.

Chillheart is a quiet dragon who lives in the very back of Kirtonos' cave. She is a sadist, and might even be crueler than her mate. But due to her silent nature, nobody is exactly sure. She has a dragon's skull on a boulder in front of her with a torch held within its mouth. The torch is lit with a purple flame and is the only light source so deep in the cave, not counting her glowing red eyes. She is usually reading an old book which has supposedly an ancient language that is no longer used unless one decides to learn Necromancy; which is forbidden. When not reading, she is either with her mate torturing victims, hunting, or simply spending time with him. Unlike other Marrows, her hide has a faint shade of blue, and is deathly cold, Kirtonos does not seem to mind this. She has used her Necromancy only once, even after she was warned that she could possibly be possessed by evil spirits, or even be manifested by the Sha, which have an extremely strong hatred towards all living beings.