Answer and Explanation:
The Epic of Gilgamesh is an epic poem in which the feats and life of Sumerian king Gilgamesh are told.
It is emphasized that Gilgamesh is a demigod; why include this emphasis of his partial divinity?
We must remember that in most, if not all, cultures, kings and queens are considered divine beings. They have either been chosen by God or a god, or they are themselves a god. Gilgamesh falls into the second category. He is the son of a goddess and a half-god, which makes him a demigod. Including his partial divinity makes him seem superior, invincible.
How does it affect his character?
This belief in his superiority makes Gilgamesh feel indestructible. However, it also makes him arrogant and selfish. It is as if he sees himself as deserving of all glory and admiration, as if nothing he ever wanted could be denied to him.