X-Men's first comic appearance, 1963's The X-Men #1, introduced the original five-member team and their mentor, Professor X, and saw them fight against the evil mutant known as Magneto.

X-Men #266 (Marvel, 1990) CGC NM/MT 9.8 White pages.The first full appearance of Gambit. Storm and Mystique appearances. Andy Kubert cover. Currently #25 on Overstreet's list of Top 25 Copper Age ...

X-Men no. 1 now ranks as the second most valuable Silver Age Marvel comic after the first appearance of Spider-Man in Amazing Fantasy no. 15. Avengers no. 1 sold for $274,850, slightly surpassing ...

Banshee (Sean Cassidy) Abilities: Sonic Scream, Flight First Appearance: Uncanny X-Men #28 (1967) Although Banshee originally appeared as a villain battling the original X-Men, ...