[@Sedjwick] I never said he can't believe it. However, a Matoran with a too-big sword does much more harm than good.
Also, the first (few) Turaga were built as such. For example, the Turaga who sent all the Matoran on his island to Karzahni for 'repairs', whom went mad, was one such individual. Just as the Toa Mata, and the first examples of Toa, were never Matoran.