Start year: 1996
Issues in volume: 1
The Onslaught Crossover main story starts here! The X-Traitor is revealed to be Professor Xavier and he wants the X-men dead! Continued in Onslaught: Marvel Universe. Collected Editions X-Men/Avengers: Onslaught Volume 1 X-Men Milestones: Onslaught
Publisher: Marvel
Issues in this volume: