2001, A Space Odyssey #10

The robotic face of Mister Machine dominates this September 1977 Marvel cover, his glowing yellow eyes and metallic visage filling the frame with an eerie, otherworldly presence — flanked by hints of fiery chaos and a startled human face peering in from the corner. Jack Kirby's pencils and Mike Royer's inks give the image a raw, powerful energy that feels perfectly suited to a story teased as a battle against "overwhelming evil" for the one thing a machine may not possess — a soul. "Hotline to Hades!" promises the kind of bold, philosophical science fiction that made this series one of 1977's more thought-provoking corners of the Marvel universe.