Theo Faron is a fictional character from the novel and film adaptation titled "Children of Men," created by author P.D. James. Set in a dystopian future where humanity faces extinction due to infertility, Theo is a disillusioned bureaucrat living in a chaotic society. As the story unfolds, Theo becomes involved in a mission to protect a young woman named Kee, who is miraculously pregnant. His journey highlights themes of hope and resilience in a world filled with despair, ultimately leading him to confront his own beliefs about life and humanity's future.