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(CNN) – Stan Lee, a legend in the comic book industry, says when he was starting out, coming up with heroes was never the problem.
"We've already established the super hero. We know Spiderman, we know Daredevil, and the Fantastic Four, and the X-Men, and the Hulk, and all of them. We know them, Captain America, and the Avengers," said Lee.
"But every month we have to come up with a new super villain, or a new super menace that these characters have to battle, and that’s the tough thing," said Lee.
The menace had to be convincing, and hold a reader's interest.
"It has to be somebody who seems to be more powerful than the hero, and you have to wonder how does the hero ever gonna get out of this? Otherwise, the story loses its interest. If Spiderman was just to fight some teenage guy who steals groceries in the store, it wouldn't be that exciting," said Lee.