Thor #134, VG/FN 1st High Evolutionary, Marvel Comics, 1966 JR1

Thor #134 features the debut of Ego the Living Planet, a unique cosmic entity that would become a significant character in Marvel's cosmic mythology. In this issue, Thor encounters "The People-Breeders" and battles against a strange alien threat. The comic also includes a guest appearance by Quicksilver and the Scarlet Witch, though the issue's text humorously notes it as "possibly the briefest, most unnecessary guest appearance you've ever seen."