The plot pretty much follows a bell curve - starts off kinda ok, then gets pretty good, then ends around the same way it started (if not worst). There was just too much unnecessary crap in the storyline, and they could easily have made this show in half the amount of episodes. Also, they introduced too many characters that either should not have been introduced or did not have enough time to develop. They really should have just focused more on a few characters and have them develop more. The only reason I liked this series at first is because it sort of reminded me of Mary Shelley's Frankenstein but that ends up derailing. People say they like this show because of the realism, but honestly this becomes pretty far-fetched. As for "evil" nature of the villian, he really does not give that kind of vibe in this series by the end. I would say Hitler or the even the Joker from Batman are worst. IMO, they could have done much more with this series. Very disappointing. If you want a good dark anime, watch Deathnote.