1. Todd is the character that I think transformed the most through his experiences in the film. When he first arrived at Welton he was shy, very soft spoken, and quiet. However, joining the Dead Poets Society, losing a very close friend, and his most influential teacher being fired allowed Todd to come out of his shell and learn to speak his mind. For example, at the end of the film as Mr.Keating exited the classroom Todd was the first of the boys to stand up and say "O Captain My Captain!". Todd grew as a individual throughout the film and learned that it is okay to think differently than others and express himself.
2. Neil, because even at the end of the film he would not stand up to his father. He would rather take his own life than tell his own father how he feels and that he is going to do what makes him happy despite his parents opinions.
3. Mr.Keating is a very strong minded, influential, and supporting character. I don't think that his experiences in the film changed him a bit. He never stopped supporting the boys and their dreams. He was always there for them whenever they needed advice, help, or simply someone to lend a ear so they could talk about their feelings. He was the most consistent character of them all and never strayed away from who he was and what he believed.
4. Neil - Neil was scared of standing up to his father. He was brought up to obey his parents without question and this lead to him allowing his father to completely control his life. He failed to overcome his fear because he chose to kill himself instead of doing what makes him happy despite his fathers opinion.
Todd- Todd was scared to be himself. He was very quiet and did not express his opinions and feelings very much. He was able to overcome his fear of branching out by standing up and speaking out against the injustice done to Mr.Keating at the end of the film.
Knox- Knox was scared rejection. He really liked a girl who had a very tough, aggressive boyfriend. Knox was able to overcome his fear by choosing to pursue the girl of his dreams despite her rejecting him and her boyfriend threatening him.
Charlie- Charlie was scared of being average. He was very outgoing and loved to be different. Charlie often did things to get others attention and express his opinions while disregarding possible consequences. Charlie was able to overcome his fear by writing poems and expressing himself during the Dead Poets Society meetings and through the article that he wrote about Mr.Keating.