The sewer mutants are a species of mutated individuals living in the New New York sewers. Appearances aside, they are mostly decent people, if a little odd. It is unknown how long they have dwelled below the city of New New York, but it has been long enough for them to build a city and a semblance of civilization with objects from the surface which were flushed away. As of 3010, in New New York, the sewer mutants are considered to be regular NNY citizens with equal rights to the surface of the city.