It was previously believed that purple dragons were exclusively female, but this is not the case. Recent environmental shifts have revealed the existence of both genders of this breed. Female behavior is well known; they are primarily herbivores but will eat meat during mating season. On the other hand, very little is known about the behavior and habits of male purple dragons.

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.

The fourth dragon in MBlackwood's brood, Kumori Prime is named for a mutant creature M once met in her travels. Much like this other creature, Kumori's disposition is friendly and courteous, though she will often become playful enough in mood to take on the monumental task of entertaining the hatchlings in the nest. Occasionally, she will get in a mood and move over into a shadowy nook to sulk, though this has never been seen to last long.

Kumori's relationship with the Keeper is perhaps the closest of any of MBlackwood's dragons, often trotting out to meet the human when she makes her regular visits to the nest. When the Keeper needs assistance with one task or another, Kumori is the first to step forward with a helping claw.