Frilled Dragons are smaller than most other breeds, but when threatened, they stretch out their wings and frills to appear larger. They generally do not like to fight and prefer hiding to confrontation. Frilled dragons live in small groups and often band together to scare off potential threats. Males also use their frills as a way to attract mates, with those displaying the “best” frills being more likely to breed.

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.

Yin Lu was the second dragon to be adopted into the Jade Clan. His scales developed a silvery sheen as the result of jade contamination, hence his name, which translates to "Silver Jade". He was the mate of Frills and Ribbons before her exile, and never recovered from her loss. The infertility plague was something of a relief for him, as it stopped the pressure from the remainder of the clan to find another mate.