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.

Brennus, meaning king or prince in Ancient Celtic, takes the title very seriously as he is the first Earth dragon, not to mention RainKingdom's first dragon, on her scroll. When not using his powers over earth to launch rocks at enemies, Brennus usually will make sure all the other dragon's are okay.