X-Men (1991) #55
Facing a full-fledged attack from Onslaught, the X-Men call in assistance from the Fantastic Four and Avengers! It's a massive grouping of superheroes that has to be seen to be believed!
Published: 8/1/1996
- Andy Kubert, penciler
- Dan Panosian, inker
- Joe Rosas, colorist
- Richard Starkings, letterer
- Mark Waid, writer