Oedipus Rex Tiresias, a prophet
He is the revered prophet who tells Oedipus that he is the one that he is looking for, that it was Oedipus himself who killed Laius. He is an elderly, blind man, but despite his incapability to see, he is excellent at reading and perceiving people. This is evidenced when Oedipus denounces his capability to receive prophecies and undermines his gift. Tiresias is not shaken by this, but knows the burden of truth, and is wise enough to know that not everyone takes their fate well.