Harrison was born in Chicago in a wealthy family, the son of James Ignatius Mosley and Jessica Mosley, at a young age he was sent to private schools, he actually wished to be in public schools at first, but as time passed and his parents showed little or no interest on him he stopped caring about it himself.At a young age Harrison had already passed through the wanting attention stage, had noticed his parents would never pay attention to him and had started to doing things for himself, not for others.