Men's newest enemy - the organization 3K - are finally debuting their very own team of superpowered mutant villains.

Colossus reveals his ruthless side by joining the Brotherhood of Evil Mutants in a shocking turn of events, from Jonathan ...

the X-Men featured mutants who each had their own powers being taught and led by Charles Xavier, known as Professor X, as they began their battle against Magneto and his Brotherhood of Evil Mutants.

She was initially introduced as a villain and member of Mystique's Brotherhood of Evil Mutants. However, she eventually seeks redemption by joining the X-Men and becoming a fan-favorite mutant.