Check out J.R.'s Akuma playthrough of Arcade mode in SFxT, at 20:00 you see Akuma’s ending cinematic… and we see Oni!
Is there some small, wonderful chance that we might actually get ONI in this game? I will be so ridiculously happy if he actually ends up being playable… I was sure that there was zero chance that he would be, but this gives me a bit of hope