>>22125809Meant to specify that it's difficult when going against other water-type teams, since tons of people will be using the great pokemon found in the type.
>>22125783Anything faster than it (greninja's like the 27th fastest pokemon), anything bulky, anything with a focus sash and a decent coverage, or anything with a choice scarf can counter it. I probably missed a few other general kinds of pokemon, but greninja has a lot of counter; it's pretty frail too, so that's a plus for people wanting to get rid of it. Greninja's annoying, but it's not unfair.