Fortinbas's father was killed by Hamlet's father. Fortinbras has a very brief, yet notable role in the play, as he arrives at the very end. He comes in as Hamlet is dying from the poison & his stab wound. Hamlet dies as Fortinbras enters the room, leaving Horatio behind to tell the story of everything that had happened in the play. Fortinbras presumably becomes King of Denmark, since there isn't really anybody to stop him from receiving the throne.
"This quarry cries on havoc. O proud Death, what feast is toward in thine eternal cell that thou so many princes at a shot so bloodily hast struck." -- Fortinbras, 5.2
"For me, with sorrow I embrace my fortune." -- Fortinbras, 5.2
"Bear Hamlet like a soldier to the stage; for he was likely, had he been put on, to have prov'd most royally; and for his passage the soldiers' music and the rites of war speak loudly for him." -- Fortinbras, 5.2
- Hamlet, Horatio, Claudius, Gertrude, Ophelia, Fortinbras and Polonius appear as secondary characters in Tom Stoppard's play Rosencrantz and Guildenstern are dead, which looks at the play from the titular minor characters' point of view.