The Anunnaki (also transcribed as Anunaki, Annunaki, Anunna, Ananaki and other variations) are a group of deities of the ancient Sumerians, Akkadians, Assyrians, and Babylonians In the earliest Sumerian writings about them, which come from the Post-Akkadian period, the Anunnaki are the most powerful deities in the pantheon, descendants of An and Ki, the god of the heavens and the goddess of earth, and their primary function was to decree the fates of humanity.