

He next attempted to test members of the X-Men, he kidnapped Cyclops, Wolverine, Iceman, and Storm, pitting them against his agent Post. He next kidnapped Chamber of Generation X from the Xavier's School for Gifted Youngsters in Massachusetts using the mutant teleporter Gateway only to return him moments later. Onslaught next sent his operatives Mimic and the Blob, whose powers Onslaught enhanced, to Camp Hayden to destroy the Nimrod project at Camp Hayden, leading to another clash with X-Force. Onslaught later hacked into the computer systems in a Sentinel facility, leaving his name printed on all the computer screens. The first of these allies was the Mimic whom Onslaught teleported away in the middle of a battle with X-Force in Siberia. Onslaught then began searching for allies to achieve his goals. The Juggernaut was found by the X-Men, he uttered one word, "Onslaught", and lapsed into a coma. Onslaught first appeared to Xavier's step-brother the Juggernaut and easily trounced him in battle and sent him crash landing in the middle of New York City. Between increased anti-mutant hysteria, trying to find a cure for the Legacy Virus, Xavier finally snapped when a young mutant was beat to death near the Xavier Institute allowing Onslaught to finally manifest. Onslaught sought to create Xavier's dream of peaceful coexistence between humans and mutants using Magnetos means. This caused a new being to be born in Xavier's mind, a being who began calling himself Onslaught. Unknown to all at the time, part of Magneto's evil essence transferred into Xavier's mind and took root there. In retaliation, Charles Xavier shut down Magneto's mind. During the course of the battle Magneto pulled the Adamantium from Wolverine's body.

The genesis of the Onslaught event began many months before hand during one of the X-Men's battle with their long time foe Magneto aboard his space station Avalon.
