The Stalkers

Overview
The Stalkers are a tribe of cannibalistic mutants that have lived and thrived within the underground of the City for as long as anyone can remember. There is no true interaction with the Stalkers, at least one that you don't want to take part in.

They only go to the surface at night and only to hunt down lone travelers in the city where they drag back down into the deep underground of the city and make a meal out of them.

It is believed that a hierarchy of the Stalkers exist. But its unknown just how it works and whose in charge.

Abilities
A combination of inbreeding, defects from cannibalism, and their environment have made them barely human. In the dark, they can see almost clearly, eyes evolved to make up for the lack of light in the underground. Despite this, they can be easily blinded by bright lights and refuse to enter the surface unless absolutely necessary.

Much like a regular human -- there abilities vary. Though, some of the larger ones of The Stalkers are shown to be able to summon near super human strength.

Though the name may give it away, the stalkers are incredibly skilled at stealthy affairs. Able to move quickly and quietly when they stalk their prey.

Location
The Stalkers are located in the Ruined City and more importantly, underneath it. They do not leave the underground unless it is night time and there have been reported cases of them leaving the city, at all.