Kull, the Destroyer #21

Issue #21 of Kull the Destroyer plunges Robert E. Howard's barbarian king straight into nightmarish territory with "City of the Crawling Dead." Gil Kane's cover is a visceral showcase: Kull strains every muscle as a massive, pustule-covered tentacled creature wraps around him, his sword poised mid-strike while a golden-haired woman in the background raises a flaming weapon in desperate aid. It's the kind of 1977 Marvel sword-and-sorcery cover that reminds you exactly why this era of fantasy comics had such a devoted following.