Castle Guards are the heavy spearmen of the Kingdom of Hyrule.
Castle Guards took watch over the royal Castle of Hyrule and other locations of utmost importance. Armed with a long spear and trusty shield, they could hold the line against cavalry charges of all kinds and repel enemy arrow fire.
With their heavy shield and spear, Castle Guards were the go-to choice to halt enemy charges, particularly cavalry. When marching close to other soldiers, they could cover armies from arrow fire as well. Their slow speed made them rather weak as an offensive unit and exposed in extended melee, so often they were resorted to purely defensive roles.