This is "Provide Some Answers," which is a feature where long unresolved plot points are eventually resolved.

Today, we look at how Roy Thomas "erased" a Jack Kirby mistake from an old Tales of Suspense Captain America story.

As noted in this recent Comic Book Legends Revealed, Tales of Suspense #82 (by Kirby, Stan Lee and Frank Giacoia) saw Captain America reminiscing about the past (as he was wont to do back then) and suddenly begins hallucinating about past villains, like Agent Axis and the warlord, Fang...

Agent Axis was actually a Kirby DC character, not a Marvel one.

So years later, in the Invaders Annual #1 (where Roy Thomas wrote the story and had classic Golden Age artists draw the individual chapters spotlighting each of the main Invaders), Thomas and Don Rico showed Captain America fight against a Marvel version of Agent Axis during World War II. He has a bizarre origin where he was literally a merged together Italian, German and Japanese agent, making him literally Agent Axis...

And now, since Captain America literally DID fight against Agent Axis during World War II, that previous Captain America story by Kirby and Lee retroactively made perfect sense and that Cap was hallucinating one of his actual World War II foes.

That was a nice example of the sort of care to continuity that Roy Thomas has had in his comics for many years, where it doesn't get in the way of the main story that he was telling (where the three heroes each have a solo adventure in the style of the classic Golden Age team-up comic books like All-Star Comics and the Justice Society), but it was an extra piece of information that also helps to make the Marvel Universe a little bit fuller and richer. It's really impressive work.

Thanks to my pal Fraser for suggesting this one in the first place, just in general terms of "Who was Agent Axis?".

If anyone else has a suggestion for a comic book plot that got resolved after a few years (I tend to use two years as the minimum, as otherwise, you're probably just in the middle of the actual initial reveal of the storyline, ya know? But I'll allow exceptions where a new writer takes over a storyline and has to resolve the previous writer's unresolved plots), drop me a line at brianc@cbr.com!