The protagonist of the ancient Mesopotamian epic known as the "Epic of Gilgamesh" is Gilgamesh himself, a historical figure believed to be a king of Uruk. The epic recounts his adventures, including his friendship with the wild man Enkidu, and their quest for fame and immortality. As a complex character, Gilgamesh embodies both heroic qualities and human flaws, ultimately embarking on a journey of self-discovery and acceptance of mortality. The tale explores themes like friendship, loss, and the quest for eternal life, illustrating the nature of the human condition.