Gold dragons are the ones most often killed by humans, who consider their scales to be extremely valuable. These golden scales grant them a high level of protection, similar to armor, and they use this to their advantage in battle.

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.

Caedus was orphaned as an egg, to his knowledge his mother was killed while trying to protect her nest from thieves who would have her scales. He was very close to hatching and his first memory is of what he believes to be his mother's dying screams. Because of this, he dislikes all humans and even distrusts his owner. However, he is also very protective of other dragons and hatchlings and tends to spend most of the time with the guardian dragons that he grew up with and tends to help with their duties.