Even before readers really knew who he was, they could tell that Doctor Doom was up to no good. Once again, Jack Kirby provides this cover, but instead of going for subtlety, he goes for full-on exposition. The ironic thing, however, is that the events happening on the cover are actually more entertaining than the wonky story contained in the actual issue.

This introductory image to Doom set the stage for the character that has become the standard for all other comic book villains (sorry, Joker.) Look no further than the fact George Lucas has openly admitted to basing Darth Vader on the Doc.