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| Publisher |
Marvel |
| Writer |
Ann Nocenti |
| Writer |
Chris Claremont |
| Writer |
John Byrne |
| Penciler |
John Byrne |
| Artist |
John Bolton |
| Cover Artist |
John Bolton |
| Inker |
Terry Austin |
| Colorist |
Glynis Oliver |
| Letterer |
Tom Orzechowski |
| Letterer |
Joe Rosen |
| Cover Artist |
Steve Lightle |
| Published | May 1989 |
In the power of Proteus, the Uncanny X-Men are forced to take on each other. Can they turn the tide and stop the reality-warping Proteus? Note: this issue does not include the reprint of X-Men (1963) #127.
