Give a stream of consciousness and then the final answer. The Ghost first appears to a duo of soldiers -- Bernardo and Marcellus -- and a visitor to Denmark, Horatio. The men draw their swords and stand in fear, requesting that Horatio, as a scholar, address the ghost. Horatio asks the ghost to speak, and reveal its secret. It is about to do so when the cock crows, signalling morning, and the ghost instead disappears. In this scene, the Ghost is clearly recognised by all present as the King, dressed in his full armour. Marcellus notes that the ghost had appeared to the castle guards twice before. Talk of spectral visitations has unsettled the night watch. Francisco, who Bernardo relieves on guard duty says, "For this relief much thanks;' t is bitter cold, And I am sick at heart."

Answer this question: the first one to see the ghost of king hamlet is?
This is the relevant information: The Ghost first appears to a duo of soldiers -- Bernardo and Marcellus -- and a visitor to Denmark, Horatio.
So, the final answer is a duo of soldiers -- Bernardo and Marcellus -- and a visitor to Denmark , Horatio.