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.

Wimbledon Tennismatch, over a few decades, perfected this game that involves hitting a hollow ball back and forth across a net on flat ground using netted paddles. The first area she flattened and built nets over became ten separate courts with a net in each. Only dragons who can run on two limbs or levitate the framed stick with magic could play, but those who couldn't tended not to see much worth in this sport anyway. Once her game was developed enough and had enough years behind it, Wimbledon finally decided to name it in honor of her first playing areas, "Ten-Nets".