Gamemnae is a fictional character appearing in American comic books published by DC Comics. She was an enemy of the Justice League. Gamemnae first appeared in JLA #69 and was created by Joe Kelly and Doug Mahnke. Gamemnae appeared in live-action in the fifth and sixth seasons of the Arrowverse television series Supergirl portrayed by Cara Buono. Fictional character biography Born over three thousand years ago, Gamemnae was an Atlantean, exiled at birth from Atlantis for having blonde hair - considered a curse in Atlantean culture. Surviving her exile, Gamemnae went on to learn powerful magic, which she later used to not only raise Atlantis from the seas, but turn the entire population into air-breathers as opposed to the water-breathing race they had been for centuries. Convinced that it was her destiny to lead the people of Atlantis in conquest of the world, Gamemnae soon established herself as ruler of her people, gradually learning further spells to increase her power. However, Gamemnae learned that all her efforts would be for nothing when Aquaman and the Atlanteans of the twenty-first century were banished back to the past by Tempest's desperate attempt to save the city from an Imperiex probe during the Our Worlds at War storyline. Outraged to learn that Atlantis would become a race of water-breathers once again in the future, she seduced Aquaman and tricked him into drinking a potion that turned him into a water spirit, subsequently confining him in a pool of water in the middle of Atlantis while his people were forced to work as slave labor underwater, building foundations to keep Atlantis above the water. Having read Aquaman's mind, Gamemnae knew of the Justice League that existed in the future, and also knew that they would inevitably seek to rescue their fallen comrade. Determined to defeat them, Gamemnae created her own "League of Ancients", consisting of various people in the world who might become a threat to Atlantis in the future. This League's members included: Rama Khan, ruler of the nation of Jarhanpur, capable of commanding the elements of Earth and Fire. Manitou Raven, a powerful wielder of magic. The Anointed One, a fallen alien who was raised by a Jewish sect as a fallen angel, possessing physical strength equal to that of Superman. The Whaler, a Northern Eurasian who can harness the power of the Aurora Borealis. Tezumak, from a pre-Aztec Mesoamerican civilization that