Biff Loman

 
"....And lot- instances- facts, Pop, facts about my life came back to me. Who was it, Pop? Who ever said I was a salesman with Oliver?" Pg 84

Biff's questioning to Willy seems very direct, he isn't hidding his emotion. From this, we deduce that he is a straight foward peron and doesn't hide his feelings. Therefore, if he has any question he speak up for himself. We can see that he is brave in this. Moreover, tracking back, after knowing that Willy had been cheating on Linda, he always fight with Willy. He can't stand that his mom is being cheated even when she loves Willy so much. Moreover, in this quote we tell a deep sorrow. He expressed a deep anger along with empathy for his dad. He is angery at his dad for letting him dissapoint all the time and that his dad not knowing who he really is. He is despair by the fact that his dad like what is not. This suggest that he wants his dad to like him for what he is. It is a hope of son to his father.