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.

He is named after Zen Buddhism, which is practiced in Japan. He is a son of Akihiko and Akemi, and is their precious son. He is best friends with his brother Fujiiro, which is convenient since their mates are also best friends. They were not raised together, but have both been best friends since when they were together in the bachelor group. Zen is a very relaxed and calm dragon, and prefers to just laze about by a nice cool body of water, and occasionally go for a relaxing swim. That's how he met his mate, Aiba. They both just so happened to find the same mountain pool, the water was cold and refreshing, and they decided to share it together. Soon they were falling in love. They went on many double dates with Fujiiro and Keiba, and on a beautiful spring morning all four became mates in a double ceremony. Zen and Aiba are so in love, and they always will be.