Fe-Matoran were Matoran under the element of Iron. They had inactive Elemental Powers, which granted them a greater physical endurance than other Matoran types. All the Fe-Matoran had gunmetal gray and burnt orange armor. The only island known to have a significant population of Fe-Matoran was Nynrah. However, other islands employed and sustained smaller numbers of Fe-Matoran. They could also be found on Industrial Regions.