Information about Sumerian Gods and Goddesses is found on the Sumerian King List as well as Sumerian clay tablets and cylinder seals. The Sumerian King List records all the rulers of Earth back over 400,000 years. This huge stretch of time coupled with reigns into the thousands of years has caused most historians to reject its accuracy. However all the early rulers were allegedly gods - demi-gods or immortals.
In Sumerian Mythology they were a pantheon of good and evil gods and goddesses who came to Earth to create the human race. According to the some resources, these gods came from Nibiru - 'Planet of the Crossing.' The Assyrians and Babylonians called it 'Marduk', after their chief god. Sumerians said one year on planet Nibiru, a sar, was equivalent in time to 3,600 Earth years. Anunnaki lifespans were 120 sars which is 120 x 3,600 or 432,000 years. According to the King List - 120 sars had passed from the time the Anunnaki arrived on Earth to the time of the Flood.
The AnunnakiKing's List are sometimes depicted as humanoid. At other times they are bird-headed with wings. Often they are Reptilian in appearance especially when depicted as warriors. Sometimes they are shown as a combination of several types of entities. All is myth, math, and metaphor, so look for the clues in every set of gods you read about, as they all follow the same patterns that repeat in cycles or loops called Time. The patterns of their battles reflect reality as duality and are found within every pantheon of gods - the same characters playing different roles.
A Sumerian tablet shows Enmeduranki, a prince in Sippar, who was well loved by Anu, Enlil and Ea. Shamash, a priest in the Bright Temple, appointed him then took him to the assembly of the gods. They showed him how to observe oil on water and many other secrets of Anu, Enlil and Ea. Then they gave him the Divine Tablet, the kibdu secret of Heaven and Earth. They taught him how to make calculations with numbers."
The Sumerians never called the Anunnaki, 'gods.' They were called din.gir, a two-syllable word. 'Din' meant 'righteous, pure, bright;' 'gir' was a term used to describe a sharp-edged object. As an epithet for the Anunnaki 'dingir' meant 'righteous ones of the bright pointed objects.'
Sumerian texts break up history into two epochs divided by the Great Deluge - the Biblical Flood. After the waters receded the great Anunnaki who decree the fate decided that the gods were too lofty for mankind. The term used - 'elu' in Akkadian - means exactly that: 'Lofty Ones;' from it comes the Babylonian, Assyrian, Hebrew, and Ugaritic El - the term to which the Greeks gave the connotation 'god'.
After the sons of God took human wives there were giants in the Earth in those days; and also after that, when the sons of God came in unto the daughters of men, and they bare children to them, the same became the mighty men which were of old, men of renown. The Nefilim were upon the Earth, in those days and thereafter too, when the sons of the gods cohabitated with the daughters of the Adam, and they bore children unto them. They were the mighty ones of Eternity - the people of the shem.' Nefilim stems from the Semitic root NFL, 'to be cast down.'
The Sumerians experienced infrequent rains that sometimes created disastrous floods, and they believed that these floods were punishments created by a demon god that lived in the depths of the Gulf of Persia. And to explain the misfortunes and suffering of infants, the Sumerians believed that sin was inborn, that never was a child born without sin. Therefore, wrote a Sumerian, when one suffered it was best not to curse the gods but to glorify them, to appeal to them, and to wait patiently for their deliverance.
In giving their gods human characteristics, the Sumerians projected onto their gods the conflicts they found among themselves. Sumerian priests wrote of a dispute between the god of cattle, Lahar, and his sister Ashnan, the goddess of grain. Like some other gods, these gods were vain and wished to be praised. Each of the two sibling gods extolled his and her own achievements and belittled the achievements of the other.
The Sumerians 'saw' another dispute between the minor gods Emesh (summer) and his brother Enten (winter). Each of these brothers had specific duties in creation - like Cain the farmer and Able the herdsmen. The god Enlil put Emesh in charge of producing trees, building houses, temples, cities and other tasks. Enlil put Enten in charge of causing ewes to give birth to lambs, goats to give birth to kids, birds to build nests, fish to lay their eggs and trees to bear fruit. And the brothers quarreled violently as Emesh challenged Enten's claim to be the farmer god.
A dispute existed also between the god Enki and a mother goddess, Ninhursag -- perhaps originally the earth goddess Ki. Ninhursag made eight plants sprout in a divine garden, plants created from three generations of goddesses fathered by Enki.
These goddesses were described as having been born "without pain or travail." Then trouble came as Enki ate the plants that Ninhursag had grown. Ninhursag responded with rage, and she pronounced a curse of death on Enki, and Enki's health began to fail. Eight parts of Enki's body - one for each of the eight plants that he ate - became diseased, one of which was his rib.
The goddess Ninhursag then disappeared so as not let sympathy for Enki change her mind about her sentence of death upon him. But she finally relented and returned to heal Enki. She created eight healing deities - eight more goddesses - one for each of Enki's ailing body parts. The goddess who healed Enki's rib was Nin-ti, a name that in Sumerian meant "lady of the rib," which describes a character who was to appear in a different role in Hebrew writings centuries later, a character to be called Eve.