Hawkman #21

A massive, snarling lion-man hybrid dominates this September 1967 cover, its enormous claws slashing toward a desperate Hawkman who struggles to protect a fallen Hawkgirl beneath him — it's a visceral image that sells the threat immediately. Murphy Anderson's cover work is crisp and dynamic, capturing both raw menace and the heroes' defiance in a single charged composition. "Attack of the Jungle Juggernaut!" poses the tantalizing question right on the cover: can the King of Beasts truly become Emperor of Earth?