Final answer:
In Sophocles' 'Antigone', the character Teiresias returns to speak with Creon after being threatened. Teiresias warns Creon and, realizing the prophecy, Creon decides to free Antigone, but tragically he is too late.
Step-by-step explanation:
The character who returns to speak with Creon after previously being yelled at and threatened by him is Teiresias. In Sophocles' play, Antigone, Teiresias is a blind prophet who warns Creon to heed the gods' will and shows him the consequences of his stubborn actions against Antigone. Despite initially being outraged at Teiresias, Creon eventually realizes the seer's wisdom and decides to free Antigone. However, he finds that he is too late as Antigone has already taken her own life, leading to a chain of tragic events.