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.

Olk is ponderous and rather slow-moving, leading some to conclude that he isn't overly bright.  He's actually quite intelligent, though, even if he's not always quick to speak his thoughts.  Olk enjoys living at Argent Mountain because there's plenty of time for him to sit quietly and think, watching the passing clouds.  While he prefers reasoned discussion to brute force, Olk will occasionally intervene when Lady Altevrys is trying to drive away a potential newcomer, placing himself between the silver dragon and her victim and growling, very quietly, if he feels that the new dragon would be a welcome addition to Argent Mountain.