Ehlek wielding his Protosteel Tri-Talons.

Toa Mahri Hahli, with her Protosteel Talons

Protosteel was the Matoran Universe's strongest known metal. Bladed weapons made of Protosteel could shred through virtually anything, even Makuta armor. It is believed Protosteel was first made on Artakha, and then given to the Order of Mata Nui to use.

Known objects made of Protosteel

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