Weapon X
In one variant of the "Days of Future Past" timeline (titled "Days of Future Now" and depicted in Frank Tieri's "Weapon X" series), Weapon X and the Sentinels are at war with Wolverine's X-Men and many other mutant groups, including Excelsior and Gene Nation. In this timeline, Fantomex becomes the host of Sublime and, possessed by the sentient bacteria, sabotages Wolverine's efforts to overthrow Weapon X.