Mercenaries are the Survivors that a player can request from their friend list or Community. They are used to help players progress through combat stages. Up to 5 requests may be active at once. Once a request is accepted, those Mercenaries may immediately be deployed. Up to 3 Mercenaries may be hired at once. Each survivor can be used as a Mercenary 1 time before having to return. Mercenaries can be employed for up to 1 week. All Mercenaries return every SUN 12 AM UTC.