The creation of the mutant island nation Krakoa marks the start of a new dawn for the X-Men. While longtime enemies have put aside their differences to build a safe home for mutants on the island of Krakoa, od blood feuds have been set aside as everyone strives for a better tomorrow. Former villains like Magneto and Mister Sinister have even been invited to help lead the new mutant nation.
But as Marvel's mutants look back and collectively respond to and correct the biggest events in mutant history, one of the greatest crimes ever committed against mutants remains largely undiscussed, the execution of thousands of mutants at Weapon X's Neverland facility.
Debuting in Frank Tieri and Georges Jeanty's Weapon X run in the early '00s, Neverland was a hidden complex where mutants captured by Weapon X agents like Sabretooth were tested to determine whether they'd be of use to the Program. Those who were accepted were either recruited as agents of Weapon X or used for further experimentation. The unfortunate mutants who were deemed unfit were implied to have been executed.
The prisoners themselves were fairly well-known mutants, such as Maggott and Leech, who was used to control the population of the prison by way of his power suppression field, even though this did not stop the captives from trying to rebel against their captors after nearly two years of imprisonment. But it was shortly after this attempted rebellion when one of Marvel's worst crimes against mutants occurred.
The camp was officially shut down less than a month after its occupants tried to escape. Not willing to simply let their victims go, Weapon X Director Malcolm Concord made the decision to terminate the remaining prisoners, which totaled around six thousand mutants.
It struck enough of a chord in Beast to make him physically repulsed by the experimentation data when he examined the ruins of the camp.
Of course, there is also the awkward fact that one of Krakoa's current leaders was secretly a part of the staff at Neverland. Mr. Sinister is no stranger to doing horrible things in the past for the sake of his experiments, and he oversaw the horrors of Neverland while posing as the human scientist Doctor Windsor. If his involvement in the deaths of 6000 mutants came to light, it might be too much to forgive, especially for a villain who was the chief orchestrator of the "Mutant Massacre."
Considering Sinister's importance to Krakoa and its future, exposing his role there could very well trigger a Krakoan civil war. As reprehensible as the actions of Weapon X were, things might be too delicate right now to broach a subject that holds nothing but pain. The X-Men need to build a better tomorrow, even if they have to pave over some of yesterday's greatest horrors.