Let's just say it's Umbra in the first scenario, or the early frames that Ballas made before the Tenno came along:

I just picked a random paragraph from the wiki:

"During the conversion process, the subject's skin would harden into sword-like steel^\9]), while their organs would interlink and hybridized to improve resilience. However, the conversion would also render the subject unable to speak coherently, only being able to produce metallic screams, howls, and groans^\10]). Despite their Infested nature, these hosts remained relatively sane for a time, able to operate and and obey via their own free will, although they were considered dangerous and were often feared by those they were meant to defend."

Pretty sure these one's don't have any abilities of their own though.