Sin is a group whose members spent too much time in the Zone without proper equipment. Or is it surviving and retaining your face and mind from the secret experimental X labs. They decided to die in the Area, as they can't go back to normal life, as if they did not want. During his stay has changed externally and internally (there was resistance to radiation, psi radiation, hair loss, change in metabolism, infertility), equipment acquired amazing properties. They are not particularly communicative, kept away from society and stalkers gather in groups. Many fear them and run around the party, while others consider them mutants and seek to destroy them. They are little known, but they say that the one who will help them financially or something, will be able to join them. The leader of the group is a Veles