Aufidius is a character from William Shakespeare's play, Coriolanus. He is the leader of the Volscians, a rival faction to the Romans, and serves as a primary antagonist to the play's protagonist, Coriolanus. Aufidius is known for his military prowess and deep-seated animosity towards Coriolanus, stemming from their history as both enemies and former comrades. In the play, Aufidius plays a crucial role in the conflict between Rome and the Volscians. His character embodies themes of honor, rivalry, and betrayal, as he ultimately allies with Coriolanus against Rome, showcasing the complexities of loyalty and enmity in times of war.