Rosencrantz and Guildenstern are ___. Old friends of hamlet clowns that hamlet used to know travelers who are murdered in the wake of revenge or hamlets trusted advisors

Rosencrantz and Guildenstern are old friends of Hamlet, sent by the king Claudio to spy on him because of his erratic behaviour. By the time, Hamlet was wondering if his father's ghost had actually shown up before him to reveal the truth about his murder and get Hamlet to avenge him.