Street Fighters
I like the way that you've got a lot of poses sorted out for these characters and that they aren't all doing the same thing, giving the impression of being staged - it looks like a photo montage, which really does do the trick for advertising hoardings, or video game cover art, for example.
Perhaps a little more could be done with the background, but I do understand that you've got a kind of minimalist attitude with things like that, which stems from the artistic style itself. Still, a few pieces of "furniture" in there could make all the difference. I notice that only one of the characters is armed - there aren't even knuckle dusters on the other characters, which does detract a little, but bear in mind that this isn't exactly ruining the piece itself, so credit does go there nicely.
Perhaps make it into a proper advert, with the detailed writing across the bottom, some sort of age-defining icon for legal purposes and so forth, just to complete the look.
[Review Request Club]