Hamlet stabs him after Queen Gertrude dies from drinking the poision that was meant for Hamlet.
Uncle Claudius poured poison down his ear while he was sleeping in an orchard
Hamlet's uncle Claudius.
King Claudius. He's now also his father, sort of. He's a villain.
Claudius-who is Hamlets uncle, gets married to getrude and then becomes the new king
Hamlet's father is murdered by Claudius (Hamlet's uncle).
His brother, Claudius, came out into the garden while King Hamlet was sleeping and poured poison into his ear.
Hamlet's mother married his uncle (his father's brother) after his father's death.
The death of his father and the marriage of his mother Gertrude to his uncle Claudius.
Claudius
when hamlet saw his father's ghost, the ghost said that hamlet's uncle (which he was king during that time) put poison in hamlet's father's ear while he was sleeping so he could become king. so it was hamlet's uncle
Horatio
Claudius