First of all, what made him [Duke in "Zero Year"] captivating is this sense of somebody who wants to save the city regardless of whether Batman wants to or not, but has been inspired by Batman. He's always been - not combative with Batman or anything - but I think he has a sense that what Robin is and what heroism is in Gotham is something that's inspired by Batman and sort of separate from Batman.

The thing with Superman is that he's completely emotionally open to the reader. Meaning what he tells you is what he's feeling; there's a transparency there. And what he tells other characters is usually as transparent as can be. What he says he believes in. So there's an honesty that is both really inspiring writing the character. One thing I love about Clark Kent is that there is a badassery that you don't see a lot. Even as Superman, he's always kind of restraining himself. When you challenge him, I think there's nobody that has a stronger spine than Superman.

The hope that they have legs. That's the biggest fear you always have creating new people. You love them, but then they kind of dissipate. Sometimes you don't get to write them as much as you'd like, like me and Harper Row.

You take the thing that is the worst thing that could have happened to you, the worst challenge in your life, and you turn it into fuel. You don't give up. And that's what Gotham is about.

I was on Batman with "Superheavy" or "Zero Year" where there was a lot of fun and bombast, but it was also personal. [In All-Star], I wanted to take that to its complete extreme, like the end of the Earth extreme, where it's over-the-top humorous, yet at the same time really deeply about what I think is of this particular moment in time, at least for me. The things I'm terrified of and the things I'm hopeful about. My life is the page.

I really wanted to make sure that if we set Duke up, that he's set up the right way and he's his own hero for the right reasons.

With this particular series [The Cursed Wheel] I'm going farther in that direction than I've tried before in terms of the elasticity of the mythology.