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.

Arche is an energetic dragon who loves to fly. She has a bit of a temper, but is kind at heart. She's slightly bitter over being a Sunset dragon instead of a Sunrise, which happened due to one of the Pebble dragons accidentally knocking her egg to the floor during the evening. She would have been a Sunrise if that hadn't happened. This worries her human friend 5ilence, as she constantly tries to force herself to be active in the daylight.