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.

CORR is part of an army of 12 Green dragons that don't understand why they're part of an army. CORR is part of the defense part of the army. He and others make sure that other dragons don't invade the cave and attack their eggs. Unfortunately there's no war, and he's been caught sleeping many times by Captain MAZE.