There are rapists, fascists and genocidaires in Attack on Titan but the most hated character is a traumatized teenage girl, hated for trying to protect her loved one after losing her entire family and home.
the older i get the more i realize how important it is not to join fandoms for your favorite movies / shows / games / literally any media that means a lot to you. staying on the outside of the fandom and just interacting with fanart and fics is the best thing u can do for urself