Nina Sayers who is a protagonist in Black Swan has a feature of a tragic heroine even she is not a nobleman as the theory of tragedy by Aristotle. Nina is just a common ballet dancer who struggles to be a perfect swan queen for her role of the performance. What's worse is that she loses the sanity which can separate between the reality and illusion. That is the reason why she stabs herself at the end of the story just to save the dignity and reach to a perfection as her wish. So, it comes as no surprise that an obsession of a perfection is a tragic flaw of Nina which leads her to the tragic
