The survivors

 The survivors are a group of inmune to the infection being Ellis, Nick, Coach and Rochelle.

Ellis:

Ellis is a mechanic who runs an auto shop on Savannah, he represents himself as a goofy beer-loving country guy he always try to get the survivors a positive state mind. As being the youngest of the group, Ellis has a naive, childish view of this world making him the "Youngest brother" of the group. In game his favorite weapons are the rifle and hunting rifle

Nick:

Nick is a ex-prisoner who escaped in the wake of the infection and celebrated his newfound freedom by stealing a white suit from a high-end retailer. Nick holds a negative and pessimistic views toward both the situation he has been forced to join to three strangers to survive. Despite  his hard attitude toward to his teammates he softens through the past of the time. In game his favorite weapons are submachine gun (uzi) and assault rifle.

Coach:

Coach is a ex-american football player who by an injury stopped playing and became an american football coach (by the way he doesn't have a oficial name). He is the oldest in the group and by the community is the "leader" of the group, he loves food and shotguns.

Rochelle:

Rochelle was a reporter, she was in Savannah producing a segment about the evacuation center when the area became overrun by the infected ones. Her preferences are Ak-47 and assault rifle and in some dialogues from the game she mention that she loves the magnum