Fan Casting X-Men: Germ Free Generation

As the printing of "The Third Species" has incited a country-wide wave of violence, the X-Men investigate the U-Men, the group responsible for the publishing of the book. They are a group of humans who forcibly remove organs from mutants to be sold on a black market and reattached to paying recipients. Who is John Sublime, this mysterious group’s eccentric leader and spokesman, and what are his ties to the tormented past of a newly rescued (and short tempered) mutant?