I kinda miss this thing. He wasn't considered very good (and isn't) and I'm not very good at battling but I got a lot of mileage out of him. I ran him as a mixed attacker with an assault vest. He could tank a lot of stuff and you could get away with not investing anything into his attack and special attack because his base stats were so high. You can use any nature that is minus speed because it's so low anyways... anyways, I miss Wishiwashi and hope it is in WiWa