Gilgamesh - Final Fantasy Summon Mythology

In Sumerian Mythology, Gilgamesh known as a legendary hero. He is a son of Uruk Emperor (Lugalbanda), who married a wise and beauty Goddess named Nisun. And just like Hercules he became half Human and half God that have a very great power. After his father die, he become the next King, but he couldn't manage his kingdom as a king. So the people of Uruk ask help from a God (Anu). Anu then ask a