The X-Men leader's attempt to mind-wipe Magneto accidentally created Onslaught, a psionic entity that nearly destroyed the world and forced Earth's greatest heroes to sacrifice themselves.
Follow the storyYears Later3 stories
01Summary
- 01Professor X used telepathy to wipe Magneto's mind during a fight, which fused Magneto's malice with his own dark impulses to create Onslaught.
- 02Onslaught seized control of New York City and commanded Sentinel fleets, threatening both mutant and human life.
- 03The Avengers, Fantastic Four, and X-Men made a last stand; Earth's non-mutant heroes had to leap into Onslaught's energy core to defeat him.
- 04Xavier repeatedly used his powers unethically, including placing mental blocks in Jean Grey's mind and tampering with Wolverine's memories.
- 05Xavier began a relationship with a psychiatric patient, Gabrielle Haller, and later abandoned their son David Haller, who became Legion.
02Why it matters
This story reveals how the moral failures of a revered leader can have catastrophic consequences, highlighting the dangers of unchecked power and hypocrisy in those who shape society.
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