In Mesopotamian mythology, Gilgamesh's companion on his journey is Enkidu. Created by the gods as a counterpart to Gilgamesh, Enkidu transforms from a wild man into a civilizational figure through his friendship with Gilgamesh. Together, they embark on quests, facing various challenges that ultimately lead to profound insights about friendship, mortality, and the human condition, as showcased in the ancient epic of Gilgamesh.