Former Survivor

Overview:
The Former Zombie is a partially-infected human. They retain some of their previous knowledge and equipment, and possess a greater threat than most zombie types. When a former spawns, it has a randomized loadout. It can spawn with a pistol, a grenade, both, or nothing.

Abilities:

 * When a Fodder spawns with a pistol, it will be able to fire relatively weak shots with poor accuracy. These pistol shots do little more than chip damage however.
 * When a Fodder spawns with a grenade, it will prime it and then run at you in a kamikaze attack. They can be easily dispatched during the prime animation.
 * The Fodder spawns with a regenerative shield, similar to the players'. This enables them to soak up more damage, and even recover from it.

Strategy:

 * Keep your distance to avoid their grenade attack.
 * When a Former Survivor primes his grenade, their shield instantly breaks. This makes it easy to dispatch them with a headshot, and the resulting explosion will even hurt nearby zombies as a bonus.
 * Large numbers of Former Survivors with primed grenades deal large amounts of damage to players...and other nearby zombies. Try aiming for clusters of kamikaze Former Survivors near other zombie types for a easy boost of damage, and to conserve ammo.
 * Take cover near props and walls to avoid their pistol shots. While individually weak, they can deal surprising amounts of damage when in numbers, and they can prevent your shield from recharging.

Trivia:

 * The Former Survivor's grenade attack was directly inspired by the Zombine from the Half-Life series.