Green Dragons are also sometimes called “earth” dragons. They usually live deep within caves, and have power over the earth. They are capable of launching boulders at high speeds, and can cause earthquakes by slamming down onto the ground.

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.

Being the most famous pebbles collector and seller of the cave, Jonny Pebbles built a store out of pebbles close to the cave's entrance. There he sells his findings, mostly to other Green Dragons. In return for the pebbles, they give him pieces of their prey or herbs they gathered.

For Jonny, pebbles are an essential part of his life. His nest is made of pebbles, his territory is surrounded by a low pebble wall, and his humble shop consists of pebbles. Thus, Jonny earned the last name of 'Pebbles', though most other dragons can't understand his strange obsession.