Friendlies

Friendlies are infected players that have no interest in infecting others (crazy, right?) Friendlies are generally still hit even if they prove they are friendly.(ouch!)

Friendly Impostors
These are people who claim to be friendly but will grab people anyway. These Imposters sometimes get killed because of how people treat normal friendlies.

Angry Friendlies
These are created by people killing a certain friendlie until they get angry. These are full of revenge and are even more dangerous than normal infected that just does it for fun. Also, they might focus either on the person who (tryed to) kill them, or they will camp spawn.

"Corner Friendlies"
These are people who dont really want confrontation, either because they want to do there own thing, or because he is avoiding some players with guns (i can understand them). So let them just mind their own business, you can try talking to them or role-playing with them, but this is most likely to be ignored. if you instead try confronting them without any special gear/guns they can and will be most likely a big threat to everyone around you. they know the fighting styles of the game and will easily take you down if they so choose.