David witnessed his wife children executed in front of him during the chaos of outbreak. He swore to get vengeance upon the men responsible for the attack. He lived life isolated after the event, focused entirely on finding the people responsible amongst the chaos of the new world. Eventually he would get his revenge but at great cost. David mental state was crumbling every day since events bringing him into this new sin filled world. Living in isolation changed David. He was a man stuck in his own body, fighting only off of instinct and survival. He has slipped into some sort of primitive survival state. The pain that haunts him is always and a continuous battle with his will to survive.