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.

Frgut the Sorrowful's story is very sad, indeed. As a young marrow, he met a beautiful gold dragoness and fell in love with her, but she never really loved him. She only kept him so she could brag that she had a halloween dragon for a mate, and she never let anyone see him in public. In private, he couldn't understand why she was never pleased with him, and he tried all he could to make her happy, even trying to disguise his odor with flowers. Eventually, she grew tired of him and left to join another clan, and Frgut the Sorrowful never saw her again. For many years he was very bitter and blamed himself. He told himself that he wasn't good enough, and one day he tried to kill himself by flinging himself off a cliff. He failed and miraculously recovered, but some injuries were permanent, and he began to lose his memory. These days, he often acts as if his mate was still here, talking to air. When he is in reality, however, he cries and despairs, for he knows he will never see her again.