After years of genetic research, recording, DNA gene-splicing and several generations of mutants developing the X-Gene, a variant of mutants was created using the genetic records of every valuable X-mutation. Those were created using as pattern and genetic source specific organs and tissue.

As for their predecessors, Sartorius, Gullet, Gristle, Neuragella, Appendix, forming the X-Men, fight for the rights of mutantkind in a society that fear them.[1]