Eren is an ISFJ, although it seems like he has no concern for others, his Introverted Sensing gets the better of him and causes him to focus on his own needs first and foremost. It also seems like he has a strong (Fi), which keeps him from being a likable character and more like an irresponsible Jacka**. Due to this and the fact that every other cognitive function is just so low, it seems he could also be an ISTJ. I would say mikasa is an unbridled INTJ, logical and devoted to the sensible method of doing things, instead of the traditional way of doing things. My best friend is an INTJ and although it feels like he hates me from the core at points, that's just how he naturally is. I would argue that Armin is an emotional ISTP, as he definitely has a strong sense of the things around himself, and a pensive outlook on life, i.e. the book about the outside world, his theories on people's behaviors and the way things are set up. He seems to be on the autism spectrum a little bit too, unaware of how others perceive him. Annie seems a little more on the Azula side of the ENTJ, being the villain that knows everything and has equal power to the protagonist. Jean has too much of a sense of pride and likability by others to not be an ESFJ. I figure Pastor Nick is an ESFJ as well, being the counselor type of person and holding his traditions against the sake of the people. Hanji is unaware of herself enough to be an ENFP, as well as inattentive enough. She manages to smile a lot more than I've seen INTPs be able to do. Levi Ackerman has enough Extroverted Thinking to make Mikasa seem like a feeling type, however it would seem that it's paired with Ni so as to make every job seem too easy for him and like he's above everyone else. Definitely an INTJ on that one. I would agree on Sasha being an ESFP if she were the type of person to pick flowers while no one's looking and put them in her hair. Kinda seems more like an earthy ISFP to me. Reiner could honestly be ESTJ or ESTP. Hans seems like an earthy ISFP as well, caring more about what happens to the kids and neglecting the duty to kill the titan because not only was it too difficult, he probably also didn't feel like there was enough time to get everything done. Erwin seems to me like an INFJ with a very strong Ti. The reason for the typings with different strengths of cognitive functions is because, as in all people, Cognitive functions can go really crazy. It's hard to read people on Personality profile first instead of looking at cognitive functions and differentiating what type they could be by them.