>>25282926Don't recall the episode number but it was in the Unova league arc. The Wave badge and gym leader were already revealed after this episode though. So it wasn't a shock when we seen it on Cameron's badge case along with the fact we seen the gym battle ourselves when he earned it.
When it comes to Shota's badges. We have no clue if they are one if not all the unknown badges are in the next game. while with Cameron's case, we already known it as the Wave badge. There are a couple unknown badges mixed in too so it only shows most of shota's unknown badges can be made up for the anime too.
