Adults struggle desperately with fiction, demanding constantly that it conform to the rules of everyday life when the answer is obvious to the smallest child: because it's not real. - Grant Morrison
Jason Aaron wrote a Noh-Varr / Fantomex Team-up issue which was drawn by Esac Ribic. It's really good, and called Dark Reign: The List: Wolverine. Wolverine's in it for a bit, but really it's Noh-Varr and Fantomex. If you only read one back story about Noh-Varr, read that one. If you read more, read Grant Morrison's Marvel Boy story. I've never read it, but heard great things.
I would like to say for the record that this is the FIRST TIME I've withheld dong when someone was so desperately asking for some.
Brian C Wood
Edit -> also, you totally can't buy Marvel Boy off the Marvel Digital App. Whereas Dark Reign: The List: Wolverine is there.