Griefer

A griefer is someone who seeks to anger and irritate other players. In Guild Wars, a common example of this is someone who quits a PvP or PvE team shortly after joining the game, with no explaination. In PvP, sometimes a griefer will utilize skills to kill him or herself, which can score points in some arenas and may waste a teammate's Resurrection Signet. Other methods of inducing irritation and anger include: scams, harassing other characters (sometimes visually via emotes), and rushing intentionally into unbeatable odds in PvE.