Gertrude. I suppose he may have told Hamlet not to take revenge on Gertrude because the ghost still has affection for her, or because it would be particularly evil for a son to kill his mother, or because the ghost knows that Gertrude was not privy to Claudius's murder, and the murder is what he wants revenge for. Or some combination of these.
The ghost of Hamlet's father, the former king.
Horatio
He's talking about his mother.
claudius
In "Hamlet," the title character's situation varies throughout the play when he delivers his soliloquies. Initially, he is deeply grieving his father's death and grappling with his mother's swift remarriage to Claudius. As the play progresses, Hamlet becomes increasingly consumed by his quest for revenge against Claudius, whom he suspects of murdering his father. This internal conflict, coupled with his existential musings about life, death, and morality, shapes the emotional and philosophical depth of his speeches.
The ghost of Hamlet's father, the former king.
The soldiers want to tell about the ghost to scare you.
Laertes conspires with King Claudius
Horatio
He's talking about his mother.
Prince Hamlet realizes that it was a skull of a jester whom Prince Hamlet once knew he was Yorick
The Ghost wears something different in every production. At least in the first scene, the text suggests that he should be wearing a suit of armour because of Horatio's description of the ghost to Hamlet, that he was armed "from cap a pe", which means from head to foot, and that he wore his beaver (his visor) up. Notwithstanding this, a number of productions do not have the ghost accoutred in this manner, either because suits of armour are expensive and hard to get, or they are clumsy and make it hard for the actor to act, or they don't match the period the director has chosen or any combination of the above.
Hamlet kills Polonius because he mistakenly believes he is killing King Claudius, whom he views as a traitor and murderer. When he hears a noise from behind the arras in Gertrude's chamber, he reacts impulsively, driven by his desire for revenge and his heightened emotional state. This moment illustrates Hamlet's ongoing struggle with action and the consequences of his choices, ultimately leading to further tragedy in the play.
Gertrude brings news of Ophelia's death to Laertes and Claudius as they plot against Hamlet. This revelation deeply affects Laertes, intensifying his desire for revenge against Hamlet, whom he holds responsible for his sister's tragic fate. The news serves as a catalyst for the unfolding conflict and further complicates the dynamics among the characters.
King Hamlet isn't. King Hamlet was. In the play Hamlet, King Hamlet was the previous king of Denmark and father to Prince Hamlet after whom the play is named. At the time the play starts. King Hamlet is already dead. However, his ghost makes an appearance in Act 1 Scene 1 and in three scenes thereafter.
claudius
Laertes tries to kill Hamlet and is successful.