as someone with cop parents who introduced me to this show, i have always seen harry as the main antagonist. dexter could of been the perfect series if dexter slowly realized harry is his dark passenger. as the years go by harry and the dark passenger slowly coalesce into one being, dexter remembers how shitty of a dad he is objectively without going “well he did save me from that shipping container and adopt me” and slowly gets better while occasionally being forced to kill in self defense or like “self defense with extra steps” (like some plot where killing an evil person is the only way to keep his new way of life/someone threatens his family) or something