In Sumerian stories, Enkidu is Gilgamesh's closest companion. He starts as a wild man but becomes civilized through his friendship with Gilgamesh. This bond is pivotal, influencing Gilgamesh's transformation from a tyrant to a thoughtful leader. Enkidu represents the human connection to nature and the importance of companionship in personal growth. His death profoundly impacts Gilgamesh, sparking his quest for immortality and understanding of life’s limits.