I was mild-mannered, wore glasses, was very shy with women.

And I agreed the feeling of action as he was flying or jumping or leaping - a flowing cape would give it movement. It really helped, and it was very easy to draw.

In the beginning, we had a great deal of freedom, and Jerry wrote completely out of his imagination - very, very freely. We even had no editorial supervision to speak of, because they were in such a rush to get the thing in before deadline. But later on we were restricted.

Jerry often says that Slam Bradley was really the forerunner of Superman, because we turned it out with no restrictions, complete freedom to do what we wanted; the only problem was that we had a deadline.

Not only that, but when I first met Joe, to my intense delight, he showed me that he was a collector. He was collecting some of the early Tarzan pages by Hal Foster, and, later, early Flash Gordons; and I found that we were both absolutely interested in the same type of thing.

I think initially we wanted to use the first letter of the character's name. We thought S was perfect.

I was mild-mannered, wore glasses, was very shy with women.