You didn’t actually get to see the Riddler in Batman: Arkham Asylum, but you will in Arkham City. Although…you still don’t get to see much of him in this trailer:
We covered a bit of the Riddler’s role in Batman: Arkham City back in March. Here’s the post if you’re interested in reading it.
Arkham City’s still on track for an October release for the PC, Xbox 360 and PlayStation 3. A Wii U version will follow sometime next year.