Please don't list this on a work's page as a trope. Examples can go on the work's YMMV tab.
Nightmare Fuel: Grand Theft Auto IV: The Ballad of Gay Tony
Ray Bulgarin is generally frightening when shows its hand psychopath. In fact, as stated Rocco: "said he wants the head of anyone involved with the diamonds". And this may be true if you played the mission "In The Crosshairs", where he clearly beheaded one of the men who was involving in the diamonds.