I learnt how to analyse characters better, that first impressions count. For example: When I saw the Joker, my first reaction was, "Oh my, why did he put such thick "makeup"? Was he mad or was he trying to scare people? Why is he dressed so dowdily? There was not a single good thing about him that I could think about. Whereas even though Batman had also worn a disguise, he did not appear to be scary and looked like Superman except that he did not have a cape.
"Heroes may not be perfect; villains may have valuable traits". I agree with this statement. The Joker's determination has brought him much success, though notorious. Batman's intentions are good but they may not reflect his goodness. It is only in dire situation that these actions are carried out.