DRAMATIS PERSONAE
CLAUDIUS, King of Denmark.
MARCELLUS, Officer.
HAMLET, son to the former, and nephew to the present king.
POLONIUS, Lord Chamberlain.
He has married Gertrude and become King instead of the rightful heir, Prince Hamlet. This action is basically what strains the relations between Claudius and Hamlet – [SPOILER ALERT] even before Hamlet comes to know that Claudius murdered his father.
Hamlet Characters of the Play