Sunset Dragons are closely related to sunrise dragons. However, their behaviors differ greatly. Sunset Dragons generally live alone or in small packs. They are more active in the evening, hunting and performing all of their daily tasks as the sun sets.

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.

Setting Sun in Glory likes to think he's gifted magically as his father was a Magi; the truth is he isn't as powerful as he imagines, he's just refined his skill so that his magic seems stronger than it is (despite his pretensions he's remarkably bright and dedicated to learning). He's also quite snarky, and though the others get exasperated with his sarcasm, they know if they ever need help doing anything he'd be right there. Much as he loves talking himself up, he almost never intentionally talks anyone down; most of his insults are casual comments that aren't meant to sting but are simply bluntly worded. He and Siri don't get along very well (ego meets arrogance), but he is fond of Zhe (Sora o Kazes nickname); this unlikely friendship produced a child once, but they made better friends than mates. He appreciates the way she listens to him speak of his varied interests, and repays her easy companionship with notice to her moods so that he can keep others away when she needs space.