If Bronzong with the "Metal Fortress" Ability is in play, are benched Pokemon protected from Greninja's "Shadow Stitching" attack? If so, does it also protect Pokemon that come into play on the bench during the opponent's turn?
If Bronzong is on the Bench, all benched Pokemon are protected, including ones put into play after the attack has happened (for example, Shaymin-EX's "Set Up" Ability will work in this scenario); however, the Active Pokemon is not protected, even if it goes to the Bench it will not get its Ability back. If Bronzong is Active and has its Metal Fortress shut off, the Benched Pokemon are not protected; even if it moves to the Bench, it will not get its Ability back. Finally, if Bronzong is on the Bench and becomes the Active Pokemon during your turn, it loses its Ability and the Benched Pokémon are no longer protected.