Might be Jonah Hill as the Riddler:
http://collider.com/jonah-hill-the-b...source=twitter
Rumor has it that both Dick Grayson/Robin and Barbara Gordon/Batgirl are going to be introduced in this movie:
https://www.forbes.com/sites/markhug.../#7333ae546591
And if Jeffery Wright is indeed cast as Commissioner Gordon, that most likely means Barbara Gordon will be a POC.