Mumblers are small grotesque monsters seen in Silent Hill. They react strongly to light and make strange growling noises when they notice Harry Mason. They replace the Grey Child seen in the North American version; the reason behind this is because the Grey Children resembled real-life children too much, and as a result, the Grey Children were not included in the European and Japanese versions. However, Mumblers still appear in the North American version in Annie's Bar and in the sewers of Silent Hill.