Who is Dionysus in Oedipus the king?

In "Oedipus the King," Dionysus is not a central character but serves as a symbolic figure representing themes of fate, madness, and the duality of human nature. He is associated with the concepts of revelry, wine, and transformation, reflecting the chaotic forces that can disrupt order and rationality. While not directly mentioned in the play, his influence is felt in the underlying tension between reason and irrationality, which is central to Oedipus's tragic downfall. Dionysus embodies the unpredictable aspects of life that challenge human authority and understanding.