You kind of worry for the characters in a way that you don't normally in sci-fi, because sci-fi tends to be about the ideas, and this is about people.

There's almost a universe as big as the Marvel Universe with X-Men. I mean, Deadpool is something I think everybody was taken surprise by, except for the people who read the comic book.

Others control our opportunities, we control our readiness.

When that character and the X-Force appeared, they took the comic world by storm. You have to look at those numbers. And you see that that isn't Rob Liefeld's only creation. There's all these other things, like Cable and Domino. There's so many things that actually could be fascinating onscreen and unlike anything you've ever seen before onscreen. So I think Fox is in a really nice position where they've got something that feels as wide and different as the Marvel Universe.

Pretty much all comic-book people, like all Hollywood people, for the most part, are pretty liberal. I think especially UK writers. Alan Moore is probably the most radical guy you'll ever meet. I grew up loving those guys, so my heroes, as a kid, were radical cartoonists, essentially. I couldn't help but - I grew up in a left-wing household. But I do think it's fun, writing right-wing characters. I've found it interesting, just as a writer, to get inside their heads and make them likeable.

She was like John Rambo meets Polly Pocket; Dakota Fanning crossed with Death Wish 4.

Matthew Vaughn phoned me up and he said, "Hey, listen, the movie has just done gangbusters. We've got to do the second one." And I was like, "Matthew, I have no second book. Dave and I haven't done it," and he's like, "You're kidding!" He said, "This movie's just made $420 million!" I was like, "...We've got nothing." So the amazing thing was, because we own the rights, we still get paid and everything, which is fantastic.