Amon Tomaz was the brother of Adrianna Tomaz. He was enslaved at a young age. His sister, after becoming the heroine Isis, along with Black Adam, broke up many child slavery rings throughout Africa, the Middle East, and Asia searching for him. They eventually found him in an Intergang re-education camp in Yemen, where he had been severely beaten many times. Isis was able to heal his wounds, but he had lost the ability to walk. Black Adam granted him a portion of his power, and he become the hero Osiris whenever he said Black Adam's name.