DC Comics' boss knows the challenges ahead — and the problem superhero films can pose

Jim Lee says the key to success has never been to treat characters as "creatures that are ossified in amber." (Timothy A. Clary/AFP via Getty Images)

Let's start with the obvious point: Superhero movies transformed the film industry over the last 15 years.

Now for a not-so-easy question: How does the man in charge of some of the most beloved comic book characters chart the years ahead?