A forgotten poem, The King of uruk, a metropolis in ancient Mesopotamia, is the oldest known narrative poem in the world, the epic of Gilgamesh. In myths and legends, two-thirds of him is a god, and one-third is a man's high god. He was once a tyrannical king. In the list of Sumerian kings, he is the son of Lougarre Banda, and his son is Ur-Nungal. The Forsaken, the fifth king of uruk, was contemporary with Aga of Kish.

That's it. But the Mayans also had a king, also known as the forgotten. But this flash corresponds to the forgotten one above.