Marvel · June, 2023
1st Appearance of Angel (Warren Worthington III); 1st Appearance of Beast (Hank McCoy); 1st Appearance of Cyclops (Scott Summers); 1st Appearance of Iceman (Bobby Drake); 1st Appearance of Magneto; 1st Appearance of Marvel Girl (Jean Grey); 1st Appearance of Professor X; 1st Appearance of X-Men; Origin of X-Men
X-Men
Writer: Stan Lee
Artist: Jack Kirby