The Eternals #12

Jack Kirby and Frank Giacoia's cover for this 1977 Marvel series delivers something genuinely arresting: a massive, pulsating brain-like sphere — the Uni-Mind, heralded as "the most fantastic life form of all" — dominates the composition in swirling reds and golds, radiating cosmic menace across the page. In the lower corners, a robed armored figure and a prone combatant hint at the secondary promise spelled out in the cover copy: Ajax the Eternal locked in battle with a demon from the past. With the tagline "When Gods Walk the Earth!" framing it all, issue #12 makes a bold case that Kirby's mythology-soaked vision of the Eternals was operating at full creative throttle.