Professor X Has Only Ever Labelled One X-Men Hero "The Best Of Us"

When the X-Men were introduced in 1963, the lineup only consisted of Cyclops, Jean Grey, Beast, Iceman, and Angel, with Professor X serving as their mentor. Over 60 years later, dozens of members have come and gone from this continually-changing roster. When counting adjacent teams like X-Force, The New Mutants, X-Factor, and Generation X, Marvel’s mutant superheroes number in the hundreds. All this stemmed from Charles Xavier’s desire to usher in a world where mutants and humans can coexist peacefully.