Lyman is a character in the novel "Of Mice and Men" by John Steinbeck. He is an old ranch hand who works alongside George and Lennie. Lyman is portrayed as a kind and compassionate man who looks out for his fellow workers. Despite his age, he is still able to perform his duties on the ranch with skill and efficiency. Throughout the novel, Lyman serves as a mentor and friend to George and Lennie, offering them advice and guidance. His presence adds depth to the story and highlights the importance of friendship and camaraderie in difficult times.