Meatbags are zombies equipped with tactical armor, and have white glowing eyes, rather than yellow ones like normal zombies. Because of this, they take longer to be killed than normal zombies. They also have high resistance against head shots, due to wearing helmets. The helmets, however, can be knocked off with concentrated fire, but this will cause the Meatbag to start running on earlier rounds.
In Descent, Meatbags can be seen in a "fused" form, as they are combined with the EMZ, giving them the ability to disable the player's Exo suit, in addition to its increased health.