If a Matoran Universe inhabitant's metal parts are damaged, will they heal, or will the injured being need to be repaired? I know some species, like Nocturn's, can regenerate (strangely, it was the metal part of his arm and not the organic tentacle that grew back), but if, say, a Vortixx or a Matoran breaks a bone, does he or she need to have it replaced or welded back together? Do lacerations in their outer shell go away over time, just as our skin can heal, or do they need to have that welded or bolted back together?