Happy's character is as unsatisfied as his father and his brother. In the cruel irony of his name, happiness seems to elude Happy. In the flashbacks of his childhood, Happy is always trying to gain his parents' attention when Biff is the centre of their focus. He reveals his compulsion to take what is not his (rather like his brother) in the form of winning over other men's fiancees before their weddings Act I-
'I don't know what gets into me, maybe I just have an over-developed sense of competition or something...I hate myself for it. Because I don't want the girl and, still, I take it and - I love it!'
Miller's stage directions on Happy's entrance helps illustrate his purpose in Happy -
'He, like his brother, is lost, but in a different way, for he has never allowed himself to turn his face toward defeat and is thus more confused and hard-skinned, although seemingly more content.'