M-Day

After altering reality so mutants were the dominant race the Scarlet Witch then changed reality again, this time attempting to rid the world of the mutant gene. 91.4% of the world's mutant population lost their powers overnight. The Xavier Institute became a haven for those who still had their powers, many of them attempting to escape persecution. Against the wishes of Institute professors Emma Frost and Scott Summers, the government assigned Sentinel Squad O*N*E to protect the mansion and its inhabitants.

The Sapien League took advantage of the situation by attacking the mansion and any mutants attempting to reach it.

Mutants at the Institute rallied around the number "198", an early government estimate of how many powered mutants were left in the entire world.

Reporter Sally Floyd interviewed a number of depowered mutants for her Mutant Diaries report. However, a serial killer calling himself the Ghoul murdered several of those whom she interviewed, leaving "Not enough died" as a marker. The Ghoul was eventually killed in an explosion during an attempt to capture him by the X-Men. Given the nature of his teleportation powers, it's possible that the Ghoul survived.

The energy previously possessed by the mutants was orbiting Earth after the events of M-Day. While passing some orbiting rocks, the energy awakened Vulcan. Eventually leaving orbit and entering atmosphere, the energy was absorbed by the Collective.

Disempowered Mutants

 * Melody Guthrie