It’s great that he’s part of the story but from book 1 Zach is not the one that is interesting. Honestly he’s a false main character. He whine’s about the past wrongs but first chance he gets bends on his morals with his new partner. At that point he lost all credibility in the story. I believe he was supposed to be the the Ying to Ryuns yang and bent the first chance he got. One for power on earth then with his partner. My opinion only but the book should focus on Ryun and the people he brings to his spear of influence.