
The Plaguehound is a variant of the Hellhound originating on the map Die Maschine in Black Ops: Cold War, being heavily mutated with Nova 6 Gas compared to hellhounds.

The Mimic is a special enemy originating in Black Ops: Cold War, shapeshifting into objects to trick the player before attack them. The Shock Mimic is a variant appearing in Black Ops 6 and 7 Zombies.