Onslaught

Onslaught was a powerful psionic entity born from the darkest impulses of Professor X and Magneto, emerging as a near-omnipotent threat that menaced both the X-Men and the wider Marvel universe. This malevolent force first revealed itself in X-Men #53.

Few villains in Marvel history have cast as long a shadow as Onslaught — a force of such overwhelming menace that their 1996 debut in Marvel Vision #6, brought to life by Andy Kubert, immediately signaled something seismic was coming for the House of Ideas. Emerging at the height of the Modern Age, this powerhouse threat has haunted the pages of The Uncanny X-Men, Cable, and Iron Man alike, sharing the stage with legends like Wolverine, Storm, and Professor X in stories that left a permanent mark on Marvel's landscape. With team affiliations spanning the Avengers, the Fantastic Four, and the X-Men, Onslaught is one of those rare figures whose reach extends across virtually every corner of the Marvel Universe — a crossover-defining presence in every sense. Nearly three decades of appearances and at least one certified key issue later, this is a character any serious Marvel collector will want on their radar.