Sentio metallico

Sentio metallico is a special type of metal that occurs naturally with sparks. The combination of the two creates a protoform. It takes very special skills to work with it.

Fiction

IDW Generation 1 continuity

When a spark is ignited in a hot spot, a small amount of sentio metallico forms with it. Normally, the fusion of the two creates a protoform.

Ask Vector Prime

Vector Prime stated that sentio metallico was essentially the same thing as protomatter, cyber-matter, and Transformium. Ask Vector Prime, 2015/08/03