1. God Loves, Man Kills
The mutant struggle against one of the X-Men’s most human protagonists is a tragic tale of self hate and bigotry. It’s easily one of the most sorrowful tales of the lengths homosapiens will go to in their efforts to eradicate mutantkind. William Stryker is the leader of the anti-mutant movement and stops at nothing to punish mutants in the eyes of other humans and the media.
2. Days of Future Past
One of the more recent X-Men movies, Days of Future Past shows what would happen if the Sentinels, mutant-hunting robots, took over North America and eventually the world. It’s a good look at the effects of a singular event affecting multiple realities.
If Professor Charles Xavier were to lose himself in the cause of fighting mutant hate and believed in the goals of his nemesis Magneto, Onslaught would be the result. The merged consciousness of two of the greatest minds in mutancy does not equal a good being and what becomes the genesis of Xavier giving up the fight even temporarily.
4. Messiah Complex
A child born with the possibility to save mutants in their darkest hour makes up the Messiah Complex storyline. Although it’s centered on a child with the name Summers, it’s interesting to see what happens when Cable – a known battle-hardened warrior – becomes slightly more human when he’s tasked with protecting a child.
5. Age of Apocalypse
One of the largest stories ever to come to the X-Men fold, the Age of Apocalypse is the focal point for a lot of changes in the X-Men universe, and, Marvel at large. Apocalypse manages to take over North America and kill numerous important mutants in the process. The fallout continues to rankle some storylines today.