To be a hero one needs some hero-ic qualities. As, a hero is polite; a hero is honest; a hero is brave; a hero is patriotic; a hero is friend to all; a hero is greed, envy, hatred, corruptions, and crimes free. A hero is hero, real hero.
Modern man can hardly be hero and real hero though Prophet Mohammad (peace be upon him) has showed how to be hero and real hero. For example, his companions Abu Bakkar, Omar, Osman and Ali (radi Allahu aanhum) were real hero and blazing star. The world has well recognized them to be real hero and blazing star forever.