Biff Loman - Biff is the 34 year old son of Willy and Linda . Rather than listen to what Biff actually says , Willy realizes his son has forgiven him and thinks Biff will now pursue a career as a businessman . Willy decides to kill himself in an auto accident so that Biff can get enough money to start his business , yet at the funeral Biff retains his belief that he does not want to become a businessman .