Heavy composite neosteel-ceramic armor protects the lumbering Thor. The plates are modular and can be replaced easily if damaged, or exchanged for thicker versions depending on battlefield conditions. Designed to defeat high-explosive armor piercing rounds, as well as disrupt the searing beams of energy-based weapons, the Thors plating offers unparalleled protection to the pilot and the mechs internal systems. Its innermost layer has a heat-resistant kinetic mesh that prevents damage from shrapnel, slugs, or even sheared armor fragments. This siege-walker may not be unstoppable, but it is undoubtedly close.