Plated Colossus Dragons are one of the largest dragon species. These huge brutes are notorious bullies—they prefer to steal food from other dragons rather than finding it for themselves. As their thick hides are impervious to most forms of physical attack, Plated Colossi simply ignore the other dragons’ protests, or lash the offending dragon with their club-like tail, which can easily break a limb. Plated Colossi have slow metabolisms and do not need to eat often, but they may consume nearly half their body weight in one feeding. These dragons are not incredibly clever and any discussion with them will often center around eating.

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.

Lady Hookblood often tells Azu of an enemy who is rumored to have plenty of food. Azu will then viciously track down this target to either capture, kill, or chase away, according to her commands. Of course, the target rarely ever actually has any food, but Lady Hookblood gives Azu all that she can eat if successful, claiming a feast was found in the enemy's hidden storage as expected. This makes Azu very eager to unknowingly continue her job as a paid assassin, and she thinks of herself as a grand warrior that her companion warriors serve, rather than a tracking dog being rewarded by superiors.