Coach is the leader of the four, and as the name suggests, he was a teacher at the local high-school before the Infected rolled into town. Coming from an early retirement in American Football, he naturally takes command and acts as the father-figure to the group. Coach is originally from Savannah, the town ravaged by Infected at the start of the game, making his battle against the horde all the more poignant.
Coming from hustling and gambling roots, Nick is a sharp-dressed, self-obsessed kind of guy. His priorities all revolve around himself, and as he's not originally from the South, is something of an outsider in the group. Still, despite his egocentric nature, Nick recognises that his best chance of survival is with this group and is forced to forge new relationships and bonds of trust to get out alive.
'Ro' to her friends, Rochelle is a determined individual with a love of adventure stemming from her journalistic roots. Sent to Savannah to cover the beginning of the epidemic, Rochelle took her chance to escape with Coach, Nick and Ellis once it was clear things had gone very wrong in the Deep South. Being the only woman in the group is a tough role, but her grit and character allow her to hold her own alongside the others.
As a mechanic, Ellis has a vital role in the group to ensure they are able to move across the Deep South. His youth, heavy accent and lack of education are misleading; he is willing to put his life in danger to impress others, and to help them, Ellis adds a strong dose of character to the group striving for survival. Like Coach, Ellis hails from Savannah, and with his mom and all his friends in the town, the Infected now have a date with this kid's vengeance.