Who has become the ruler of Thebes after the fall of Oedipus?

Creon becomes the ruler of Thebes after the fall of Oedipus. Following the tragic events that unfold throughout the play, Oedipus blinds himself and ultimately abdicates the throne, leaving a power vacuum in the city. Creon, who is Oedipus's brother-in-law, steps in to take over the responsibilities of leadership. His ascension to power is significant because it represents a shift in governance and perspective for Thebes. Throughout the play, Creon is depicted as a character who prioritizes the welfare of the city, contrasting with Oedipus’s tragic flaws and impulsive decisions. This newfound leadership is critical as Thebes seeks to recover from the chaos and solve the problems that arise from Oedipus's actions.