Outcasts since birth, the X-Men are the next step of human evolution, each born with a unique genetic mutation that gives them extraordinary powers that they've learned to harness for the greater good.
Wolverine lives a mutant life, seeks revenge against Victor Creed (who will later become Sabertooth) for the death of his girlfriend, and ultimately ends up going through the mutant Weapon X program.
X-Men Origins: Wolverine
As Wolverine searches for clues to his shrouded past, a new enemy rises: William Stryker, a sinister military leader obsessed with ridding the world of the "mutant menace." Can an uneasy alliance between Magneto and the X-Men stop him before he carries out his genocidal plot?
X-Men United: X2
X-Men: First Class unveils the epic beginning of the X-Men saga - and a secret history of the Cold War and our world at the brink of nuclear Armageddon. As the first class discovers, harnesses, and comes to terms with their formidable powers, alliances are formed that will shape the eternal war between the heroes and villains of the X-Men universe.
X-Men: First Class
When a cure is found to treat mutations, lines are drawn amongst the X-Men, led by Professor Charles Xavier, and the Brotherhood, a band of powerful mutants organized under Xavier's former ally, Magneto.
X-Men: The Last Stand