Perhaps among the most venerated of dragon breeds is the Zyumorph, a breed whose selfless heroism and strong moral compass are nearly unparalleled by other dragons. Zyumorphs have an innate urge to fend off wrongdoing, and as such, are often sought after in times of peril. Although they are independently quite capable fighters, it is said that their true might is not unlocked until all six Zyumorphs are brought together in times of great duress.

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.

Jason is more of a myth than an actual dragon. There are few confirmed sightings of him, and even those are so eerie that there are debates on whether that's even a male or a female, hence the double name. As the Guild of Scientists, the local dragons are trying to figure out whether he's real or not, even though almost all of the researchers claim to have seen him in the corner of their eyes.

Little do they know that Jason, in fact, is a scientist much like them. The problem with him is that he was a failed attempt of a curse by an evil Magi that tried to create another creature like the famous Missingno—a walking fog cloud. The spell didn't work, but Jason was turned into an illusion, forever cursed to walk among the living invisible, not feeling the need to eat, drink or stay warm.