The third CAS for the Liger Zero (in both the anime and models), the CP-21 Panzer is specifically designed to be a heavy-artillery Zoid. It has a great number of missiles, as well as two powerful "Hybrid Cannons", and is wrapped in a thick armor that offers much more protection than the basic armor. However, this comes at a cost, and the Zoid is not as agile as it would if it were to mount the other CAS units. "Panzer" is German for "tank" or "armor".