I hope he gets 5 more Bonsly, with another one that follows him around in a similar fashion to Jigglypuff.
Along with Whiny Bonsly, we'd get favourites such as Chronically Depressed Bonsly, Detatched Retinas Bonsly, Multiple Knee-caps Bonsly, Boozed-Up Bonsly and our good ol' tag along buddy, Freakishly Obsessed Fangirl Bonsly aka. The Token Female Bonsly.
They will all have different facial expressions, with at least one of them having a realistic, human face. Possibly modeled after Joan Rivers OR Satoshi Tajiri. It really depends on the whole copyright deal.
That, of course, is a best case scenario. Meaning it isn't going to happen. So, if Brock is going to capture any pokémon in Shinou, I'd say that either Minomadam or a Minomuchi that evolves into Minomadam are the best possible choices. I can't even begin to describe the amount of belly-laughs they could get out of that little number.
An extremely camp Elblade is also pretty high on Brock's priority list methinks.