Onslaught
Onslaught
A psionic entity born from the combined consciousness of Professor X and Magneto, created when Xavier mindwiped Magneto. Onslaught represents the darkest potential of both men (Xavier's repressed rage fused with Magneto's ruthlessness). The Onslaught event was a line-wide crossover that temporarily removed the Avengers and Fantastic Four from the Marvel Universe.
Appearances Over Time
Most Appearances By Series
The Uncanny X-Men (1981) 8 issues
X-Men (1991) 6 issues
Avengers & X-Men: Axis (2014) 4 issues
Onslaught Unleashed (2011) 4 issues
Weapon X-Men (2024) 4 issues
X-Men Unlimited (1993) 3 issues
X-Factor (1986) 3 issues
X-Man (1995) 3 issues
Cable (1993) 3 issues
Excalibur (1988) 2 issues
Event Participation
X-Man #15
1996
X-Man #15
May 1996
Onslaught remains one of the most ambitious yet polarizing crossover events of the '90s, with its psychic amalgam concept generating more mixed reactions than outright praise. The storyline is frequently cited as overstuffed and convoluted, particularly its finale, though the setup and early tension between Xavier and Magneto's merger earn respect. The 2021 Onslaught Revelation one-shot and X-Men '97's adaptation attempts show Marvel recognizing both the character's iconic status and the need to streamline what the original event made unnecessarily complicated.
Onslaught
Mark Waid & Andy Kubert