Answer:
1. Hamlet = Prince of Denmark (This is the tragic hero of this play)
2. Claudius = King of Denmark (This is Hamlet's uncle, the one that killed Hamlet's father- the previous king)
3. Ghost = Late King of Denmark (Hamlet's father appears as a ghost telling his son that someone has killed him)
4. Gertrude = Queen of Denmark (The widow of late King Hamlet, who marries Claudius when he becomes king of Denmark)
5. Ophelia = Daughter of Polonius ( and sister of Laertes and Hamlet is in love with her)