From what I see (and I know almost none of these things' names):
The pink one with the hammer smacks her clone (twin, doppleganger?) in the head while the black one fires a foot-Hadouken at her at the same time.
The one with the bow fires an arrow at the head of Sonic's evil robot twin, which does nothing as he leaps for the black one's spiky head.
The white one was evidently giving a sermon when this whole mess started, and so he stands in the background saying, "Why can't we all just get along?"
All the while, Sonic and that green entrepreneur in' character pose for the title screen of MORTAL KOMBAT: SONIC THE HEDGEHOG.