Wow. It was a splendid experience watching Ember grow up from a girl who's life centered around her mother and who was naive to the world(to a large extent) into a person hardened by violence and all the gore she faced ever since her life was torn apart. 
 Tucker Morris, the one character that kept confusing me and seemed to good to be true, finally turned realistic at the end, (view spoiler)[when he received a justified death. (hide spoiler)] 
 Chase Jennings, well, he's pretty realistic. And also he's quite protective of those he cares about, at the same time graceful but not infallible. Although, (view spoiler)[ with all the ruckus at the end I suppose his death would have been a more reasonable ending. 
 Three were all quite amazing. Though, a plot fail here: In the second book, Wallace says they won't do anything without the instruction of Three even though he's a part of the Three. (hide spoiler)] 
 The whole series is quite gripping and I loved the style of Kristen's writing. Looking forward to more stuff from her.