‘Oedipus at Colonus’ is set between ‘Oedipus Rex’ and ‘Antigone’, though chronologically was Sophocles’ final play. It follows Oedipus after his exile as he and Antigone arrive at Colonus near Athens and Oedipus curses Thebes and blesses Colonus if he is permitted to die in the city. It doesn’t follow the formula of a tragedy, hence the tag of the trilogy being ‘The Theban Plays’ as oppose to ‘Theban Tragedies’ and here I felt that ‘Oedipus at Colonus’ was very different in tone to the other two plays and its more distanced perspective made it as a standalone play much weaker. ‘Oedipus Rex’ and ‘Antigone’ both could exist outside of the trilogy, but ‘Oedipus at Colonus’ depends on the other two to have an impactful plot, it is solely a bridging device in a way. 

That being said, Creon did really shine in ‘Oedipus at Colonus’. The loyal Creon of ‘Oedipus Rex’ becoming the tyrannical leader of ‘Antigone’ felt quote unusual, and Oedipus’ curse explains his character shift. His path to becoming the antagonist doesn’t really exist and he immediately changes to fulfil this role in ‘Colonus’ but he certainly fills it explosively. He completely dictated the story and Oedipus, despite being the eponymous character, is cast to the background. Even still, I don’t think Creon is particularly in the wrong!