General Rat guards the north and is the embodiment of "Manwolbosal," a Buddhist god who fills the moon with clear water so that it will consistently shine. It is said that "Manwolbosal" came down to Earth in the form of a rat to capture a demon that was drinking all the water in the moon. General Rat is important because he gives light to the world even though doing so is like trying to fill a bottomless bucket with water