The Greek hero known for slaying the serpent Python is Apollo. In mythology, Apollo is revered not only as a god of music and poetry but also as a deity of prophecy and healing. His triumph over Python, a monstrous serpent guarding the oracle at Delphi, symbolizes the victory of order over chaos. This act establishes Apollo as a central figure in the pantheon, representing intellectual pursuits and artistic expression. The story underscores the importance of courage and strength in overcoming adversity and securing knowledge, aligning with larger themes in Greek mythology concerning the balance of power in the universe.