A stock character is an archetypal character notable for their flatness. As a result, they are an easy target for parody and criticism. In the given choices, the answer is most likely Creon. He is an archetypal villain because his announcement to bury Polyneices is the catalyst for the misfortune which composes the plot of the story. His philosophy as an oppressor is almost exactly opposing to Antigone which is the archetypal hero of the story who loves her fallen brother and wants to see him to buried out of his love and the love of the gods.