The Four Masks are characters in the videogame Shadow Hearts. All four 'live' in Yuri's heart and gnaw at his soul. They plague Yuri constantly through-out the game and unlike the rest of the villains in the game they are not concerned with world conquest or destruction but are just concerned with making the main protagonist Yuri suffer and attack him personally without the help of any of his friends most of the time. If the player does not hold off their advances between every few battles they will summon a grim reaper Yuri has come to call Fox Face, to kill him in the real world.