That's Goliath class armor that the zombie is using?...... Oh no.. ZOMBIE SOUNDS FLESH!!!! The Goliath Exo Zombie is a special type of an enemy in Call of Duty: Advanced Warfare in Exo Zombies that appears in the maps Infection and Carrier. It also appears in Call of Duty: Mobile in the Undead Siege mode, where it is known as the Heavy Gunner.