The Xavier School has a new headmaster: Roy Thomas! Stan Lee's right-hand man, Roy took mutantkind on wild new adventures as he cut his teeth as a scripter of superhero sagas. These early adventures come from the time when Cyclops, Marvel Girl, Beast, Angel and Iceman were a quirky quintet of teenagers together against the world. Across ten issues you'll see them confront a host of villains - from Count Nefaria and his henchmen, to the Locust and the Aztec-inspired Kukulcan! You'll also witness the first appearance of mainstay X-Man Banshee and read the rare stories when a sixth mutant member, the Mimic, joined Professor X's squad! Collecting X-MEN (1963) #20-29.