Tarrou is a character from Albert Camus's novel, "The Plague." He is a visitor to the town of Oran, where the story takes place, and becomes a key figure in the fight against the epidemic. Tarrou is thoughtful and introspective, often reflecting on the nature of life and death. Throughout the novel, Tarrou forms a close bond with Dr. Rieux, the protagonist, as they work together to combat the plague. He is known for his strong moral principles and desire to understand the human condition, making him a significant voice in the narrative.