Tiamat

Tiamat, otherwise known as Mummu-Tiamat (which likely means Mother Tiamat, Maker Tiamat, Demiurge Tiamat, or Chaos, Tiamat), is the Babylonian equivalent of the Sumerian Great Mother goddess of the sea, the primeval Namma or Nammu. In the Babylonian epic of creation, the Enuma Elish, Tiamat is associated with chaos in the beginning of time; she's a large dragon symbolic of the bitter saltwater, undrinkable, dangerous, and powerful.

The Enuma Elish
In the Enuma Elish, Tiamat and her consort Absu give rise to the primeval gods, Lahmu, Lahamu, the Sky Father Anshar, the Earth Mother Kishar, and Anu, god of heaven and first of the Anunnaki. Anu then has children of his own, including the brothers Enki and Enlil. Enki later goes on to slay Absu and establish his home on his corpse. Likewise, Tiamat is eventually slain by the storm god associated with sovereignty, Marduk, the son of Enki and his consort, the Earth Mother Ninhursag.

The mythical epic details Tiamat's creation of the world and her death and all of what occurs in the story is the result of her offspring. Therefore, for more information, please visit the article on Enuma Elish.

Enki and Ninmah: The Creation of Man
In the Sumerian creation myth detailing the fashioning of the first people from clay, Namma hears the cries of the Igigi, lesser gods of the heavens who were hard at work crushing clay and carried earth in baskets for the Anunnaki, the more powerful chthonic gods of the underworld. She brings their tears to her son and wakes him up, pleading with him to cease the toil of the Igigi. Enki then instructs her to build the first humans out of the clay from the top of the Absu with Ninhursag serving as midwife with the assistance of Ninimma (daughter of Enki and Ninkura and fertility goddess associated with female genitalia), Suzianna, Ninmada (brother of Ninazu), Ninbarag, Ninmug, and Ninguna.