I emphatised with Mayella Ewell most. From her responses, we are able to tell that she does not have any real friends. Tom Robinson was probably the only man she viewed as decent. Although she might had committed the offence in a moment of impulsiveness, I still emphatised with her. She also had a father like Bob Ewell who spend the handout on whisky for himself instead fo buying food to provide for his children. She was physically abused by Bob Ewell and was even beaten up by him when he discovered their heinous act. Mayella had a huge burden on her shoulders, which was to look after her siblings whom Bob Ewell did not cared about. Mayella testified against Tom Robinson in court probably because she wanted to destroy evidence that she was the one who advanced upon Tom Robinson, otherwise there would be many unnecessary arguments and fights. Mayella could have also been threatened by Bob Ewell not to tell the judge exactly what happened at the crime scene.
I emphatised with Bob Ewell least. We can see him as the main antagonist here as the story centers around the case of Tom Robinson. Bob Ewell was an irresponsible, impulsive, dishonest, selfish and stingy alcoholic, who barely cared about his children. The handouts which he received were spent on whisky for himself, instead of buying food to provide for his children. He made no effort to manage and discipline his children but just go out and poach to provide food for his family. He pushes all the responsibilities on Mayella, which resulted in her not having the opportunity to go out and meet people, thus having a limited view of the outside world. Bob Ewell also physically abused her daughter and called her a whore when he saw what had happened that day.