He starts off describing his childhood, we get a snapshot of his future as a rich man. We get to see his struggles to try and make money first and his introduction to Wall Street. It is only quite a bit into the film where he is introduced as an arsehole. He isn't a very sympathetic character but he at least starts as a charismatic character and we are only introduced to his flaws later on. (Really at the dinner scene where we are introduced to 4 of his colleagues in one go.)