Re: Give Robin Williams a role
I don't picture him as Riddler, but he could easily play a smaller, much more low-key character. Maybe something like Rupert Thorne or even Penguin, functioning in the story similar to how Falcone and Maroni did in the previous two films.
And on the pedestal these words appear:
"My name is Ozymandias, king of kings:
Look on my works, ye Mighty, and despair!"
Nothing beside remains. Round the decay
Of that colossal wreck, boundless and bare
The lone and level sands stretch far away.