He must be a person of some stature or high position such as a king, general, or a nobleman.
He must be a good person. He must matter to us and we must see him as a worthwhile person.
Because of his position, his actions usually have far reaching effects.
He must possess a character trait or quality which under normal circumstances would be a virtue, but under the special circumstances of the play proves to be a fatal flaw (hamartia- the tragic flaw that leads to his downfall).
He usually makes further errors in judgment following his misdeed.
Often he has a distorted perception of, or is blind to, reality.
He suffers both outwardly (isolation, alienation, attacks) and inwardly (tortured conscience).
He must elicit both pity and fear from the audience (catharsis).
St. Rosemary Educational Institution. "Characteristics of a Shakespearean Tragic Hero (From Aristotle)." http://schoolworkhelper.net/. St. Rosemary Educational Institution, Last Update: 2016. Web. Retrieved on: Monday 1st February 2016. http://schoolworkhelper.net/characteristics-of-a-shakespearean-tragic-hero-from-aristotle/.