How To Catch An Ash Greninja In The Pokemon Video Game Series

If you want to get an Ash-Greninja you will need a Greninja with the Pokemon ability "Battle Bond". This is currently only possible in the special Pokemon Sun and Moon Demo which once the full game comes out you'll be able to transfer this special Pokemon to your Pokemon Sun or Pokemon Moon video game. Their is a man in the Pokemon Center who will transfer Greninja.

To get this Greninja to transform into Ash Greninja you must fist knock out an opponent's Pokemon with Geninja and that will activate it's ability to transform into Ash-Greninja.