Please name fictional characters from movies or television shows who go through an identity crisis?

I am doing this for a project at school. I am wanting to pick a character that's interesting to me, but I am having trouble thinking of any. I need a character that goes through an identity change, is searching to find who they really are, or are struggling with anything else about there identity. Examples are Neo from the Matrix or Jason Bourne. These have already been used many times though, I would like a character that I like more considering I have to write a humongous paper on them. Thanks!~