1) Creon fits the Aristotelian model of a tragic hero as he holds a position of high nobility as the King of Thebes and displays dignified actions in serving Oedipus and upholding justice.
2) However, Creon's flaw is his pride and abuse of authority, as he believes his judgment is infallible and refuses to listen to wise advice.
3) This hubris leads to his downfall, as his refusal to heed the prophet Teiresias results in the death of Creon's son and wife. He finally recognizes his error and takes responsibility for the misfortune he has brought upon himself and his family.