The Spectacular Spider-Man #55

That vivid magenta cover by Frank Miller says it all — Spider-Man recoils before the explosive, white-hot energy radiating from Nitro, whose ghostly, fragmented form looms large in the background as a chilling reminder of just what this villain can do. The cover copy puts it bluntly: "As if Spidey didn't have enough trouble already… Nitro's Back!" With Roger Stern writing and Luke McDonnell on interior art, this June 1981 issue promises a high-stakes clash between the wall-crawler and one of Marvel's most dangerously unpredictable foes.