>>27849763Because they wanted to try something new, presumably to hype an eventual new mechanic.
Thing is, synchro Greninja is fairly standard shonen anime stuff, which seems to be what the anime is heading into. Its not an earthshattering concept but its not a terrible one either.
But here is the real thing, you're bitching about the anime, which in no way stops you using your Greninja in game to your hearts content. Sad it didn't get a mega? Boo hoo, most pokemon don't, and there's plenty that need it more. But the way you act, that is like a child who thinks that because he doesn't like something no one else should either.