Bleeding Moon Dragons are mostly nocturnal creatures. When outside in the sun, the small red spatters on their back grow and spread, making the dragons appear to “bleed.” It is said that the darker the shade of red, the more aggressive the dragon. Their tail barbs contain a powerful neuro-toxin which they use to subdue their prey. They are solitary creatures except when mating, preferring to dwell in the caves in mountains or other high places. Their large wingspan makes them fast flyers as well as fast runners, but they prefer to glide instead. Males are very competitive and will try almost everything to impress females, who will choose their mates based on speed and performance. Juveniles tend to form bachelor groups once fledged.

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.

Kopu Bloodmoon was the very first of her species to be brought to Dark's cave. The spots on her back are a very dark red. Having heard the rumors about what that meant, the other dragons of the clan watched her warily for any signs of aggression. After she proved herself to be unusually friendly and helpful, they eventually gave up and decided that maybe she wasn't so aggressive after all. She is a good hunter, and provides a lot of the clan's food. When something threatens her friends or family, she attacks, and she won't give up until the threat is killed or at least subdued. She has two best friends, Treacherous Olang the Black Dragon and Dusk Finch the Bright-breasted Wyvern. Treacherous is also her mate, and she loves to find special gifts for him to show her love.