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Who Is Onslaught? Origin, Powers and Key Facts

Onslaught (Marvel): Onslaught was born from the minds of Professor X and Magneto, and is a nigh-omnipotent villain, and can absorb powers from various other characters. O

By the Pop Culture Files editorial team3 min read✓ Fact-checked
Onslaught comic character
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Onslaught is a Marvel comic book character, with over 376 comic issue appearances. Onslaught was born from the minds of Professor X and Magneto, and is a nigh-omnipotent villain, and can absorb powers from various other characters. Onslaught is mostly remembered for his part in the deaths of the Avengers, Fantastic Four, Hulk and Doctor Doom that led to the Heroes Reborn reboot.

Who is Onslaught?

Origin Onslaught Onslaught was a sentient psionic entity created from the consciousness of two mutants: Professor Charles Xavier , the telepathic founder of the X-Men , and the mutant known as Magneto , Master of Magnetism. During a battle between the X-Men and Magneto's Acolytes , Magneto extracted the Adamantium from the skeleton of Wolverine . Upon seeing this, a very angry Xavier used his telepathic powers to shut down Magneto's mind, rendering him catatonic. During the psionic contact, Magneto's anger, grief and lust for vengeance entered Xavier's consciousness; that and with every long-suppressed negative feeling Xavier had endured during the last 30 years. This aggregation resulted in the being known as Onslaught, a being made of psionic energy combining Magneto’s and Xavier’s psyches. Creation Onslaught made his first full appearance in X-Men vol.2 issue 53. Major Story Arcs Evil Born Onslaught's Original Appearance Onslaught had an appearance similar to Magneto but was larger. This similarity was noticed by Wolverine when Onslaught claimed to be Charles Xavier.

Key facts

Onslaught is of god/eternal origin. The character is published by Marvel. With 376 recorded issue appearances, Onslaught ranks among the most featured characters in comics.

Frequently asked questions

Who is Onslaught?

Onslaught was born from the minds of Professor X and Magneto, and is a nigh-omnipotent villain, and can absorb powers from various other characters. Onslaught is mostly remembered for his part in the deaths of the Avengers, Fantastic Four, Hulk and Doctor Doom that led to the Heroes Reborn reboot.

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