The Survivors

The Survivors are the four playable uninfected humans. Each Survivor has his or her own unique appearance, personality and backstory, making them easier to identify at at a distance. Players can choose which Survivor they control in the lobby, or be assigned to a Survivor not being controlled by a player.

Bill
A Vietnam veteran whose combat skills have helped keep him alive. He is the eldest of the Survivors.

Francis
A tattoo-covered biker. He used the outbreak as an outlet for his aggressions.

Louis
A former Junior Systems Analyst at his company's IT department.

Zoey
A teenage girl who watched horror movies during college while her grades suffered. Zoey's face is modeled from Alesia Glidewell, the same person Chell from Valve's Portal was modeled from.

"churchguy"
A man whose voice clips were found in the demo's files. He appears to be afraid of infection, locking himself in some sort of way that the Survivors must get through. It is later revealed that he was bit and deemed himself immune to the virus after waiting an hour. Ultimately, he becomes an Infected. His paranoia of the Infected drives him to apparent insanity. He often says "better safe than sorry" and may cause a mini-finale where he rings a bell to attract the horde to kill the Survivors. There is a slight similarity between his voice and the voice of the "Scout" from Valve's Team Fortress 2, but it is currently unknown if they have the same voice actor.