An experimental Pulverizer, the Prototype only appeared in the final level of Armored Core: Nexus and is believed to be a precurser to the Pulverizer weapons that appear in Armored Core: Last Raven. Although it was defeated by him, The Raven was still unable to prevent the Unmaned Suicide Weapons' attack on the world and was presumed to be KIA after fighting numerous Suicide Weapons.