The Will o’ the Wisps is the name given the ninja who serve The Swamp by patrolling its borders, keeping unwanted guests away, escorting honored guests, stopping internal crime, and generally keeping the peace. They are named for a legend that predates the village itself. Lights were said to have been visible in this swamp, and were attributed to the spirits of the dead. Legends do not seem to agree on whether these lights saved lost wanderers, or lead you to the land of the dead. This is why this swamp was feared long before the founding of the village.