Sony has already made Allstars Battle Royale, which is very similar to Smash Bros. in terms of being a fighting game with a bunch of Sony characters, but what if Microsoft did one as well?

What would an Xbox version look like? What characters/levels would you want to include in it if it did happen?

Of course, Master Chief and Cortana would probably be given, but who else? Think that Microsoft would use some of the old Rare characters, or maybe some characters from games like Fable or Sunset Overdrive?

EDIT: Alright, tons of people are saying that the game would suck because it doesn't have the amount of characters that Nintendo/Sony offer, but I asked what would be included in it, not how much it would suck. C'mon guys.

EDIT 2: Since no one bothered listening, I changed the title to better illustrate what I'm asking. Please stay on topic guys.

It really wouldn't work. They just don't have the characters, and the characters they have don't mix well. Banjo vs Marcus Fenix wouldn't make for an epic game.

Well Sonys one had crazy different characters like that...

I think they could pull it off if they really wanted to. They don't have a ton of characters but that doesn't mean it couldn't happen.

I'd be for trying it. (At a friends house)

It would prob be as bad as ps all stars with like 10 versions of master chief

It would probably bomb like PSABR did.

Megabomba. 

Who would be in it? Conker? Dont think so. Nintendo has a lot of original characters to use, i dont think a smash gameplay style would fit for a microsoft franchise mash up. If only playstation all stars gameplay was like dissidia or power stone, that would have been awesome.

I always wanted it to be like the movie Battle Royale:)

Well one thing's for sure, it wouldn't be anywhere close near the quality of Super Smash Bros. Microsoft just doesn't have that many characters to work with.