The ghost, in Act 1 Scene 5.
the ghost
Polonius
Marcellus
Francisco
I believe that he is speaking about Hamlet Senior and his recent death, that it is fresh.
Well, a lot of people: Hamlet, Claudius, Gertrude, and Laertes.
Bernardo. He says, "Who's there?"
Hamlet
Hamlet, about five times, Claudius and Gertrude.
Marcellus
Hamlet spoke the words in William Shakespeare's play Hamlet.
Hamlet spoke the words in William Shakespeare's play Hamlet.
Francisco
I believe that he is speaking about Hamlet Senior and his recent death, that it is fresh.
Well, a lot of people: Hamlet, Claudius, Gertrude, and Laertes.
This is from Hamlet. What it means is that Hamlet suspected his father was murdered. Which he was, but at that stage he didnt know this.
Bernardo. He says, "Who's there?"
His father, Old Hamlet. The ghost who later speaks to him.
He/She speaks as a stage direction.