Doesn't have to be Slowbro, either.
Slowbro is the Bulky Water I use for my teams, but it's not a foregone conclusion that it WILL be Slowbro. Most probably use Milotic.
Whiscash is really underused, but it can't really tough Gengar, so it's a moot point.
Anyway.
Accuse me of chickening again if you want, but I have decided against the Nuzlocke again. I want to get to Battle Frontier and just have fun with the Pokemon I love and wasn't forced to use.