Tuskie Tyrant Yoko Kurama
Fancy footwork
... How did Sylveon hit Gligar twice in a row with two different attacks?
That was most likely Trump Card. The plates are thrown first, then the impact is shown right after.
I've said it before and I'll say it again: Pokemon shown in promotion aren't guaranteed to make it into the game, loads of older Pokemon were in the Black/White promotion but as we all know, non of them made it.
I highly doubt that we're not going to get any past Generation Pokemon in this game.