Aria dragons are a brightly-colored and sprightly breed, perhaps most adored for their lyric calls. Their song-like melodies fill the areas they inhabit; their coos resemble those of birds, only more elegant and refined. They have fairly strong magical capabilities, but tend to reserve these strengths for last-minute defense, choosing to live their lives in simple peace. Arias, sticking to the tropics, typically live quite far from human settlements, giving rise to the previously held belief that they had gone extinct.

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.

Sozu is the nest mate of Karein. As the first female to be adopted into the Rappanna clan, competition for her affections were fierce and would have been much nastier had two white dragons not been on hand. She chose Baroque as her mate rather quickly, and the two remain inseparable. She often acts as peace-keeper among the more quarrelsome hatchlings, and sometimes even for the adults. She shares Baroque and K'treva's affection for hatchlings, though she doesn't have as much patience for them as they do.