Blancblack dragons are a two-headed breed known for their hardiness and easygoing nature. They are omnivorous, with the cream head preferring to eat plants and the violet head preferring to eat meat, and can adjust readily to harsh climates. These dragons are sociable—both with other two-headed breeds and with single-headed dragons—and can often be found as adopted members of social dragon colonies. They are often considered symbols of balance and fairness, and likenesses of Blancblacks have been found in ancient ruins associated with law and justice. Females Blancblacks have longer tails than males, which they use as whips when defending a nest from predators.

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.

Two-headed dragons are unique enough to deserve a separate classification from ordinary dragons. They have two necks, two brains, two mouths, but one stomach and one main body. The two heads usually work together, but there are times when they will fight each other, snapping back and forth. Their unique anatomy prevents them from breeding with single-headed dragons.

In a large, diverse city like Nworset, there are often conflicts between individuals based on the kind of dragon they biologically are. Often, it is out-of-towners whose native cultures clash with the city's laws on equality, but occasionally even long-time residents get into disputes. Little a's and Big R's are a councillor with the Nworset police. Their duty is to reduce tensions and help the individuals involved come to an agreement without devolving to violence. She takes advantage of the steryotype of blancblacks as fair. Oftentimes, one head will talk to each of the arguing parties. Her purple head, Little a's, is short-tempered and has a bias towards larger dragons; her cream head tends to be more anxious and favours smaller or more dragons. Both heads are aware of their bias and often contact Gekin and Eura for backup when a situation arrises between individuals of vastly different sizes. The bauta is more fair, but less respected among certain demographics.