[@Phantomlink959]think of it this way if you want to. Mason was human once yet he inadvertently committed a serious sin and died, he remembers nothing except what he did, his name, and the fact he was once human. His soul is still part human seeing as he committed a serious sin yet it was to save someone, but he is part demon since he died and had sinned majorly that part of his soul is evil and wants destruction and death while the human part doesn't want to hurt anyone which resulted in Mason and shadow