Dragons are creatures with nearly unlimited life spans. They can survive for long periods of time, and no one has found a dragon that has died of old age. Adolescence 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. Once they hit adolescence, hatchlings change quickly, maturing to their full forms in only 2 years.

Dragons don't communicate with each other verbally, but they will growl to scare off predators and frighten prey. Young dragons will emit an extremely high-pitched squeal when they are frightened. To communicate, they use telepathy with each other and to speak to other creatures.

Black dragons are warriors. They are strong and capable in battles of force, but also ample magic users, capable of devastating opponents with their spells. Their bright eyes give them excellent night vision, which is why they generally hunt during the night.

Nightmeary is a very beautiful black dragon of whom her master is especially proud. When she hatched from her egg, the rest of the Black Dragons in the cave was quite sceptical about this completely black dragon, except for Bazzey and Hermes, her nearest friends. She showed her great talent for fight already very early, when she won every skirmish against her playfellows. Having become quite a mighty beauty, she is quite high in the cave's hierarchy and all the males try to gain her favour. In the present, her only thought is to care for her master and to guard the cave, though.