Ancient Stone Soldier: Eox (古代巨岩兵 オーイス Kodai Kyōganhei Ōisu?, Ancient Giant Rock Soldier: Eox) is a boss from The Legend of Zelda: Phantom Hourglass. A giant machine, apparently built for protection or war for the Cobble Kingdom, it has been wreaking havoc, angering King Mutoh. This lumbering giant serves as the boss of Mutoh's Temple and is the guardian of the third Pure Metal, Aquanine.