||The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Angel; Iceman; Beast]; The Brotherhood of Evil Mutants [Mastermind; Magneto; Toad; Quicksilver; Scarlet Witch]; Namor, the Sub-Mariner
||Xavier reads a news story about Namor and wonders if he is a possible mutant; Magneto comes to the same conclusion and invades the Sub-Mariner's realm with an invitstion to join his Brotherhood; Enchanted by the Scarlet Witch, Namor agrees; The X-Men attack and, during the ensuing battle, Namor decides not to join either team, mutant or no.
||This story takes place soon after Fantastic Four #27.
||in Marvel Super-Heroes (Marvel, 1967 series) #25; in Amazing Adventures (Marvel, 1979 series) #11 (October 1980) [pp. 1-11]; in Amazing Adventures (Marvel, 1979 series) #12 (November 1980) [pp. 12-22]; in Marvel Masterworks (Marvel, 1987 series) #3; in X-Men: The Early Years (Marvel, 1994 series) #6; in Essential Uncanny X-Men (Marvel, 1999 series) #1; in Marvel Special (Marvel Italia, 1994 series) #4