at the same time? wow

Nope, I am in the lead by a hair.

It's Arkham Asylum

The Joker seems to wear the same costume he had in the big computer screen of some arena. This arena seems like an asylum considering there's a table for a madman in the background. The Joker statue makes an evident reference to Hamlet. Green Lantern is bulkier and they seem to have put more hours to his design now than in MK/DC. The "silk gloves" Hal Jordan wears are a blow of fresh air in the character designs.

That's gonna be awesome.

I'm interested in who will be voicing The Joker.

Is Hammil returning? He said he wouldn't come back after Arkham City, unless it was an animated Killing Joke movie.

If Hammil doesn't return, I think it should be John DiMaggio. His portrayal in Under the Red Hood was the second best in my opinion.

Sweet. GL looks like he's about to jump? His feet are kinda off the ground and there doesn't seem to be a shadow under him. I was anticipating both characters a lot. Thanks NRS.

nice. looks like hal has his new 52 look

It looks more like his fighting stance has him permanently hovering to me. Which is cool.

Superman does something similar.
Anyway, I like GL's costume. Definitely better than the weirdly-shaped plates from MKvsDCU. And I definitely dig that they kept his gloves white like in the comics. That was something that bugged me about the movie costume, Hal having green gloves.
I like that It has sort of a Tron thing going on with the softer armor and glowing seams, which is something I've always wanted to see in Lantern costumes since they're made by the ring.
Also, I'm guessing that stage is Arkham Asylum?

There is a shadow... It could be that you will move him by hovering like Superman.

Looks like Arkham Asylum to me. Can't wait to see the stage transitions - I hope we see some twisted stuff.

Oh right, I didn't even realize he was hovering like Superman. I too like this costume, especially the parts that are lit up.

The stage does look like Arkham Asylum. If it is, that is really great. My final wish is that Mark Hamill is the voice of Joker.

Awsome!

Can't wait to see the cameos in this stage, got to be some. It would be awsome to see Killer Croc scare the $h!t out of ya if ya get too close to his cage/cell. I'm going to guess he'll have at least 2 henchmen from the Bat series beyond Harley/Catwoman that have been locked up in Arkham Asylum and I'm calling Bane/Poison Ivy!

This is bringing the wonderful memories of Arkham Asylum/City back all over again. I hope to see some other wild cameos though like Mad Hatter, Riddler, and Calendar Man!