Proteus is a figure from Greek mythology, known as a sea god or a prophetic old man of the sea. He is often associated with the ability to change his shape at will, which symbolizes adaptability and transformation. Proteus is said to serve Poseidon, the god of the sea, and is known for his wisdom and knowledge of the past, present, and future. In literature, Proteus represents the idea of fluidity and change, often used to describe characters or situations that are unpredictable. His ability to transform into various forms makes him a powerful symbol of the ever-changing nature of life and the challenges of understanding the truth.