Mr. Rubinstein is ARTUR, a five-letter name. He is a fictional character created by author and playwright Arthur Miller in his 1949 play Death of a Salesman. Mr. Rubinstein is a wealthy businessman who is a friend of Willy Loman, the protagonist of the play. He is a successful businessman who offers Willy a job, but Willy ultimately declines. Mr. Rubinstein is portrayed as a kind and generous man who is sympathetic to Willy's plight.