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.

Both Sulo and Aatos are Finnish names. Sulo means "charm or grace" and Aatos means "thought". Not only is Sulo Aatos an exemplary Magi dragon, intelligent and polite, he is also the only dragon in the clan other than Vieno Tyyne and Ekaitz Zeru that Virva Tuuli listens to. His responsible and subtle nature keep Virva Tuuli from becoming too much of a problem for the clan, while she keeps him constantly busy keeping up with her "brilliant" ideas.