Talk:My Little Pony Equestria Girls: Rainbow Rocks/@comment-24711582-20140929131349/@comment-25198266-20141001025738

But those two shouldn't exist, especially when the Twilight and Spike from Equestria were in the human world for a while, twice. If there were "two Twilights" and "two Spikes" facing each other, that parallel dimension of time and space would be in great danger.

So, no, those two from the post-credits scene can't possibly be human world's Twilight and that non-speaking dog Spike. They must be imposters. Besides, the human Mane 5 and Sunset Shimmer would think that they are the Twilight and Spike from Equestria and would wonder how did THEY get back sooner.