Formative adventures of the original X-Men!Join Cyclops, Marvel Girl, Beast, Angel and Iceman in adventures from the days when Marvel’s merry mutants were the quirkiest quintet in comics and not yet than the worldwide wunderkinds they are today! This Epic Collection presents early classics including the first appearance of Banshee; the brief tenure of the sixth X-Man, Mimic; the complete Factor Three saga; the “Origins of the X-Men” feature exploring Professor X’s formation of the team; and the debut of new costumes. Then the X-Men’s lives take their most tragic turn as their leader, Charles Xavier, is killed!COLLECTING: X-Men (1963) #24-45, Avengers (1963) #53; material from Not Brand Echh (1967) #4, 8Written by Roy Thomas & Gary FriedrichPenciled by Werner Roth, Jack Sparling, Dan Adkins, Ross Andru, Don Heck, George Tuska, John Buscema & Tom Sutton