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.

Ace is a warrior, a beautiful dragon full of pride. He has no enemy to fear and he would give his life for his friends. He is very hot tempered and intelligent. He and Akatsuki Grey, the dominant male are very good friends and are often seen hunting and training together. Ace is sensitive, even if he doesn't look like it. He gets angry easily and he also has strong sense of justice. He can go really well with his human friend, Flitz who he loves and always protects.