The Titans in Greek mythology are a group of primeval deities who preceded the Olympian gods. They are significant for their role in the creation of the cosmos and their eventual battle against the Olympians, known as the Titanomachy. This conflict illustrates themes of power, authority, and the struggle for dominance in the universe. The Titans, such as Chronos and Gaia, symbolize various aspects of nature and time, and their lineage influenced many key figures in Greek myths, shaping the foundation of mythology.