This is a perplexing question to which there is no simple answer. In the same way that Shakespeare titled a play The Merchant of Venice, when the merchant, Antonio, is not the primary character in the play; in Julius Caesar, Caesar is not primary to the action that continues throughout the play. In both of these plays, however, the title character (in this case, Caesar) serves as the catalyst for action that is central to the play.As for Brutus, the term "hero" can be misleading. We tend to think of a hero as someone who swoops in and saves the day, someone we would like to emulate. A super-hero is a good example of this sort of hero. However, if you consider the definition of tragic hero as it was described by the Greek philosopher Aristotle in hisPoetics, then we have a very different definition of "hero."As defined by Enotes, a tragic hero is the main character in a tragedy. The modern use of the term usually involves the notion that such an hero makes an error in his actions that leads to his or her downfall.. . .Aristotle . . is quite clear in his pronouncement that the hero's misfortune is not brought about "by vice and depravity but by some error of judgment." In fact, in Aristotle's Poetics it is…