There are a lot of great anime series, but none of them even come close to what Attack On Titan is. I've watched many TV Series, anime and hollywood, and among all of them AoT stands right at the top. To me AoT is a whole another level of writing, so many developed characters in a single show, such level of emotions get triggered. We cry, we smile, we live with the characters. But even all that apart, the thing I liked the most about AoT is how deep the characters are, there's no one who is a hero or a villain, everyone are just people. Everybody has to make tough decisions and take tough steps, everybody has to keep moving forward, and that's the core of AoT. There are some characters who have special abilities but one thing is common, everybody is equally human. Everybody has fears, insecurities, and a darker very personal side to them and AoT explores that in its characters. AoT characters are much more relatable, their decision making, their views and their fears all seem so real. AoT is the best there is to me. You'll be amazed to see how many characters you will care about by the end of the 4th season, Eren, Mikasa, Armin, Levi, Hange, Ymir, Krista, Falco, Erwin, Jean, Sasha, Connie, Reiner, Zeek, Gabi, Peick, Annie, Grisha, Eren Kruger, Carla, Ksaver, Dina, Kenny, and besides them there are so many other prominent characters. May be all other TV Series and Movies combined I don't like so many characters.