Isaac Clarke was a former ship systems engineer who worked for the Concordance Extraction Corporation, Isaac Clarke harbored strong resentment and distrust toward Unitology. This resentment formed from his mother's conversion to Unitology and her subsequent psychological deterioration and brainwashing, causing her to liquidate the family estate to pay the Church and to kill Isaac's father and then herself. Isaac was an empathetic individual and was consistently determined to save a lot of people