DC Universe Online is the reason I bought a PS3. Besides LittleBigPlanet, Resistance, Uncharted, Killzone, Ratchet...anyway, SOE has just announced that villain Mr. Freeze will be joining the cast. At this point it would probably be easier to just announce who won't be in the game.
If you aren't familiar with Victor Fries, he's a main Batman villain played most brilliantly by Arnold Schwarzenegger in Batman & Robin. Also, because of an accident that occured while trying to save his wife, he can only survive at sub-zero temperatures. So he lives in a suit that runs on diamonds, never realizing that moving to a meat locker would be a lot cheaper.