Black Dragons are warriors. They are strong and capable in battles of force, but also ample magic users, capable of devastating opponents with their spells. Their bright eyes give them excellent night vision, which is why they generally hunt during the night.

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.

Gifted with a tremendous body and an ever-growing fortitude, Heracross's courage is only matched by the size of his heart. Prophesied as a savior by the oracles of his tribe, Heracross is the living token of the allegiance of the Black dragon to the cave. He swings his wings with massive force, sometimes even hurting himself when doing so. The ground trembles every time he slams his claw and his reflexes are impossible to surpass; allowing him to retaliate just after being attacked. Heracross is decided to fulfill his destiny, and he knows that the upcoming battle will become his ultimate challenge.