>>48200733Because Megas got cut in the games, plus there was a perfect opportunity to bring back some of his old Pokemon in XY to mega evolve instead of having the mary sue Greninja. Not to mention now it's that shillmon Lucario.
>Charizard would be the obvious choice. Alain used Mega Charizard X but Ash could just use the Y version>Sceptile was already used by Sawyer/Shota, so that would be unlikely>Heracross would be a based choice. Old fan favorite and hasn't been seen in a while>The undisputed, unfathomably gigachad choice would have been calling his Pidgeot out of retirement from Pallet outskirts and using it to mega evolve.