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.

Though she has no official name, she is affectionately called "Black Marowak" by her owner. Marowak was sent to the "aristocrat territory" to serve as the right-hand maid for a golden dragon named Sophistocrat. Marowak is often annoyed by Sophistocrat's tendency to stare at her while she's not looking. She often speaks to him in a bored, monotonous manner, and tries to drop subtle hints for him to let her tend to her work.

One day, out of the blue, she was startled by a rather poorly attempted declaration of "love" from the golden dragon. After her initial shock, she glared at him and told him to stop fooling around, only to continue with her duties.