Dark Gaia (ダークガイア Dāku Gaia) is an antagonist in the Sonic the Hedgehog series. He is a primordial hyper energy organism from the dawn of time and the incarnation of darkness, night, and destruction. Since his birth, Dark Gaia has been in an eternal conflict with Light Gaia over earth, where they maintain a cycle of destruction and rebirth of the planet. In the present day, Dark Gaia was awoken prematurely by Dr. Eggman, who planned to use his power to establish Eggmanland, which caused it to break apart and scatter across the world. After being reassembled, Dark Gaia attempted to destroy the world, but was defeated and returned to dormancy by Sonic the Hedgehog and Light Gaia, restoring its cycle.