User blog:Jakson212/What is Zer0?

Ok. I haven't played BL2 But i have read tons of stuff on it and seen tons of videos about it and one thing stills makes me confused to this day: What is zer0? He is probably not human from what we have gathered in-game. But is he really an alien? Maybe a cyborg. Or an alien thats native tounge simply sounds like our human haiku? Post you're theorys here. I'd love to hear what other people think.