Far and away one of the most enigmatic of dragon breeds, the Sinomorph is shrouded in near-complete mystery. While the exact conditions that herald its arrival are not certain, it is said to only appear when called upon by all six Zyumorphs. Record of its existence may be limited to folklore and ancient legends, but recent sightings seem to suggest this storybook behemoth may truly walk the lands of Valkemare. If the stories of the past are to be trusted, its appearance serves as a beacon of light in the face of looming calamity.

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.

Gjoni is known just as "Great Sinomorph", and he usually keeps his distance from humans and other dragons. He did present himself to a fella named Stewid, who was so, er, inspired that he became a devout follower of Gjoni despite knowing little else about the Great Sinomorph. His sermons generally use the same template, where he identifies something to condemn as a sin. Gjoni actually listened to the entirety of one of Stewid's speeches in person, hidden by magic, of course. The sermon started, "Skiing is an abomination. Cease your evil, skiers, for you are in trouble with GJONI!" and decried skiing as a violent act, and the activity corrupts innocent dragons, and something about someone leaving and taking the child with her. Since nothing fazes Gjoni, the speech was only a curiosity to him. He actually enjoys skiing very much. He feels he ought not to correct Stewid for Stewid's mental state may deteriorate further, and these sermons are funny and no one seriously listens, anyway.