Joe Christmas is a fictional character from the novel "Light in August" by William Faulkner. He is a complex figure, often struggling with his identity and the societal expectations of race and heritage in the American South. His mixed-race background leads to a deep sense of alienation and conflict throughout the story. In the novel, Joe's life is marked by violence and tragedy, reflecting the broader themes of race, identity, and existentialism. His journey explores the impact of societal norms on individual lives, making him a poignant representation of the struggles faced by those caught between different worlds.