Uncleanness the Dark Draco

Uncleanness or known as Uncleanness the Dark Draco, comes from the Draconion bloodline, which became the first generation of half demon and half human, granting superb fighting prowess and might than a regular human. Uncleanness is the direct descendant of the Demon lord known as the Sin of Selfishness and a human woman whose name was Ella.

Early Life
Before Uncleanness was born, he was prophecised to be named Uncleanness the Dark Draco by multiple priests-who cowered in fear at the touch of Ella's pregnant-self. When the Demon lord "Selfishness", figured out Ella was pregnant with his child, he ended up killing her while she was still pregnant, in attempt to get rid of the child, due to it being strictly forbidden in the underworld to have relations with a human woman. However, the baby was born regardless of Ella's death. Uncleanness as a baby, was raised by human bandits who found him by his mothers corpse, where they trained him to be a mercenary and bandit, utilizing his immense hatred towards the Demon race. Eventually this fueled his plot of revenge; to kill his father.

the Dark Draco Rebellion- Selfishness' death
During Uncleanness teenage years, he trained day in and day out to attempt to have a fighting chance against his demon lord father, who eventually died in the Dark Draco Rebellion. At the age of 16, Uncleanness prepared by killing all who stood in the way of the human bandits who raised him. This preparation gave him the strength to travel towards the underworld, in the nether fortress his father resided in. This battle concluded when Uncleanness took his sword and impaled Selfishness' chest, mortally wouding him and eventually resulting in the death of the great Demon lord, who terrorized many humans. This is where he became known to other demons and demon lords, as the Dark Draco.

Founding of a new Bloodline
The emergence of the human-demon bloodline became apparent starting with Uncleaness the Dark Draco, who was brought about as a result of Selfishness' lust, and other lesser demons. This bloodline is very limited to a select few of demon-human descendents, whose power is based on the rank of the father or mother within the demon hierarchy, which is reliant on individual power.