Spotted Greenwings are relatively small nocturnal dragons. Easily recognizable by the fleshy appendages growing off of their head and rump, they are most commonly seen in forests at night, leaping and soaring from tree to tree. While generally social, spotted greenwings are very quiet and rarely make any sort of vocalization. Their bodies are unusually warm to the touch, though they are unable to breathe fire. Greenwings are voracious feeders and will consume nearly any living thing that they can fit in their mouths.

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.

Mossyglow lives in a heavily forested area called Mirkwood Forest. This forest is constantly dim and gloomy no matter the time of day, so she and the other Spotted Greenwings that live there are sometimes active during the day. Despite the fact that they deeply mistrust strangers, and that they're supposed to be a quiet breed, this particular group of Greenwings loves taunting and teasing any stray travelers by singing (telepathically, of course) silly, mocking rhymes at them, and then laughing hysterically, all the while staying hidden among the shadowy branches. They've also got a motto for their little gang: "Mirkwood Greenwings! What Holla!", which they also love to shout to annoy others. While there isn't an "official" leader, the other dragons in the group tend to follow Mossyglow's lead, as she is the most boisterous, yet the best at staying hidden. When she isn't playing, sleeping, or hunting, Mossyglow enjoys having intense, yet nonsensical conversations with her friends.