This breed of dragon results from eggs or hatchlings that have been neglected. They are usually rebellious, not obeying their masters, sometimes even attacking them. However, their neglect as a hatchling leaves them crippled, and they are weak compared to other breeds, causing them to stay with their masters for protection.

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.

The Manslayer Duke is ruthless as a Leader, chosen for the heirship as a hatchling by the following of the god Lalune. He often patrols Lalune's territory in the night, devouring enemies who have crossed the line whenever he finds them. When encountered, he has a very ill temper... And a soft spot for Chickens. He also gets along very well with Silver Wreath.