To my way of thinking, whether it's a superhero movie or a romance or a comedy or whatever, the most important thing is you've got to care about the characters. You've got to understand the characters and you've got to be interested. If the characters are interesting, you're half-way home.
Some artists, such as Jack Kirby, need no plot at all. I mean I'll just say to Jack, "Let's let the next villain be Dr. Doom" ... or I may not even say that. He may tell me. And then he goes home and does it. He's so good at plots, I'm sure he's a thousand times better than I. He just makes up the plots for these stories. All I do is a little editing ... I may tell him that he's gone too far in one direction or another. Of course, occasionally I'll give him a plot, but we're practically both the writers on the things.
I don't sound disloyal, but I've never had a pair of Marvel pyjamas or underwear. I do have a lot of Marvel figurines at home in a cabinet. Every time they make a new Marvel figure I put it in my cabinet.
