Who arrives at court to deliver a message in act 5 hamlet?

In Act 5 of Shakespeare's "Hamlet," a messenger named Osric arrives at court to deliver a message from the King of England regarding a duel between Hamlet and Laertes. He is characterized by his flamboyant manner and serves as a conduit for the royal invitation to the duel, which is part of the larger plot involving treachery and revenge. Osric's arrival highlights the themes of manipulation and the impending tragedy that unfolds in the final act.