Oh alright; that would explain why one of my favorites-Urien-is missing. Anyway, gr8 collage shot, and I like what you did w/ Sean's outfit, and lol Poison's as big as the guys (don't worry I know the story).
My main crit is that the characters seem out of scale compared to each other and have contrasting styles. Poison looks extremely tall, and Yun and Yang look a bit stretched thin. An example for the contrasting styles part is that Akuma looks a bit more cartoon proportions.
I really do I like your colors, and the arrangement is nice. Just work on those issues, and you'll have yourself a wonderful piece!