During Pope Innocent's crusades of the 13th Century his knights invaded the country of Zandia. When the high priest refused subjugation, the knights began to slay the holy men. During the battle, the high priest acquired the Cloak of Christ; purportedly worn by Jesus at the last supper, which was being returned to the Holy land for exorcism of dark powers instilled into it by evil mystics.
Donning the cloak the high priest was invigorated by the faith of his fighters and lead them to victory, bathing in the blood of his fallen enemies which gave him even greater power and immortality.
Closing Zandia to the outside world the high priest ruled for over half a century until he was slain by his son at the age of 100. Thus it was for centuries; son slaying father, bathing in his blood and growing stronger from his followers' belief in him. It was not until modern times that the cycle was broken.
The ruler of Zandia, fearing the curse of Blood, attempted to slay his American wife and her child. They fled the country, and the young woman married into a wealthy royal family where her son learned to wield power from his stepfather. After returning from his education abroad the young man learned that his beloved mother was being slowly killed by his stepfather's hand. Enraged he murdered the King and fled to his land of birth, killing his own father and establishing his rule as Brother Blood.
Current Incarnation:
Brother Blood II
Former Incarnations:
Brother Blood I