Sumac was the founder of the order of Sumac; a cult of warrior-priests that formed on the planet Sapphire in the 51st Sapphirean Century. Sumac believed that all of human conflict was part of a continuous, universal struggle. He believed that the evil that had brought about the Nine Crusades would return in a Tenth Crusade that would imperil the human race, and he trained his warriors to be ready to defeat. In the meantime, they were to arm and train themselves to battle more mundane forms of evil and help maintain peace and order on the planet Sapphire.
His origins are not clear prior to his arrival on Sapphire Colony, but he was said to be 400 years old at the time of his arrival.