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.

Morty is one of the victims of the 'let's name the hatchlings when they hatch' phase the human in charge went through before realizing that it was best to wait for the little dragons to gender. However, when she was offered the chance to change her name, Morty refused, since she had already become accustomed to it. She's very intelligent, and enjoys reading above anything else, specially about old legends and folklore. She's also usually calm and collected, but mention Eusine and she'll blush like mad before attempting to bite off the offender's head. And when Eusine himself is nearby, it always ends in Morty yelling, hitting or trying to kill him, or all three at the same time. Normally while blushing. Newcomers to the clan can never guess they're a couple until an older dragon points it out, which is done outside the Sunset's hearing range to avoid another of her violent fits.