Ultramantium
From MediaWiki
Ultramantium is a very strong metal, good for use in the armor-plating of Cybertronians. Its composition is unknown.
The Dinobot Grimlock was known to possess a super-thick layer of ultramantium "skin".[1]
Ultramantium is a very strong metal, good for use in the armor-plating of Cybertronians. Its composition is unknown.
The Dinobot Grimlock was known to possess a super-thick layer of ultramantium "skin".[1]