Billy Parham is a fictional character from the novel "The Crossing," written by author Cormac McCarthy. He is a young cowboy who embarks on a journey across the American Southwest, facing various challenges and moral dilemmas. His character represents themes of loss, survival, and the harsh realities of life in the wilderness. Throughout his journey, Billy encounters a range of characters and situations that test his resilience and beliefs. The story explores his relationships with family, particularly his brother, and the impact of their choices on their lives. Billy's experiences reflect the broader struggles of humanity in a changing world.