The X-Men have battled just about anyone and everyone over their time in Marvel Comics, and the most powerful X-Men villains are not always mutants. When the X-Men debuted, they battled Magneto, and it was an interesting dichotomy. Professor Xavier was putting together a team of mutants who could live in harmony with humans and … Continue reading 7 Most Powerful X-Men Villains Who Were Never Part of the Brotherhood of Evil Mutants, Ranked