Guard Breastplate

In Mistborn: The Final Empire, the Guard Breastplate emerges as a quintessential piece of ferromagnetic armor adorning the guards of noble keeps like Keep Venture, rendering them vulnerable to the precise manipulations of Allomancers wielding iron and steel. Its simple, functional design underscores the technological disparity between skaa rebels and their noble oppressors, becoming a tactical liability in heists and skirmishes. Though its role remains confined to the first book, the breastplate symbolizes the era's archaic defenses, soon overshadowed by the series' escalating magical and revolutionary upheavals.