What is the main plot function that the players serve in hamlet?

In Shakespeare's "Hamlet," the main plot function that the characters serve is to explore themes of revenge, madness, and moral corruption. Hamlet's quest to avenge his father's murder drives the narrative, while other characters, such as Ophelia, Claudius, and Gertrude, contribute to the unfolding tragedy by reflecting the consequences of ambition, betrayal, and the struggle for power. Their interactions and conflicts reveal the complexities of human emotion and ethical dilemmas, ultimately leading to the play's tragic conclusion. Each character's choices and fates serve to illuminate Hamlet's internal struggles and the broader themes of the play.