The recurring characters Gilgamesh and Enkidu are actually based off of the characters of the same name from The Epic of Gilgamesh, the world's oldest recorded literary work dating back to 2000 BC Sumeria. Gilgamesh himself was named after the title character and a great king of Uruk, a region in Sumeria, who reigned around 2650 BC. Final Fantasy's Gilgamesh's bombastic warrior personality is mentioned in The Epic of Gilgamesh as the other Gods hated his pompous god-like personality and his claims of being 2/3 God, 1/3 human. Gilgamesh's quest for Excalibur in Final Fantasy is similar to Gilgamesh's quest for immortality in Sumerian epic. Enkidu is also similar to his Sumerian counterpart. Enkidu's beast-like appearance in all of the Final Fantasy games he's in are reminiscent of his upbringing in The Epic of Gilgamesh. Enkidu was created as a wild beastman to match Gilgamesh's strength so he could kill him. The two became partners after the fight ended in a draw and they became best friends. This is similar to how their Final Fantasy counterparts are usually inseparable and are battle partners.