Laertes is the son of Polonius in William Shakespeare's play Hamlet. He is a foil to the title character, and is portrayed as a young man eager for action and glory. Laertes is a loyal son to his father and is determined to avenge his death at the hands of Hamlet. He is also a foil to Ophelia, his sister, who is more passive and obedient. Laertes is a complex character who is driven by his emotions and ultimately makes a tragic mistake.