[He let out a long breath, and then finished his drink. He was going to need it.]

Wish I could tell you, hoss. I can't tell you what it is. I can only tell you what it does. It's some kind of lifeform that re-purposes everything it can get its hands on at a molecular level. An' I don't just mean things.

I mean people. In it's base form, it don't look like much at all - just a blue, glowing goo. But it changes' things and it eats energy to get bigger.

And it defies the god damned laws of physics, when it wants to.