Magi Dragons are, as their name suggests, primarily magic users. They rarely use physical forms of attack. They eat anything they can kill, which is almost everything. They won’t kill unprovoked except when hunting, although they may kill humans if in danger. Their strong magic makes them one of the most feared breeds of 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.

The Doctor is a strange traveler who seems to age more slowly than even an ordinary dragon. His odd abilities, such as the ability to regenerate into a new dragon with a different personality and new physical features when near death, have caused the other dragons that have met him to suspect he has more in his blood than just dragon. In spite of their distrust, he is normally a cheerful dragon who goes out of his way to help others, albeit is a bit scatterbrained at times. He has protected the dragons of the Ophidian Clan from danger more than once. His only constant companion is Idris, who refuses to be separated from him. The Doctor has never given his real name, only saying, "I'm the Doctor" as his title. His nickname, the Thief, was given to him by Idris, who states that she stole him and he stole her. Despite his very short time in the Ophidian Clan, Scrollwyrm has recorded him, along with Idris, as a temporary inhabitant of the clan due to their warmth and helpfulness.