It is pretty funny to poke fun at how Brock looks. It did look like an Onix from what I was seeing. I just love Brock's lips. Is he supposed to be black? Then again, I don't even know what ethnicity he is at all. Many people have wondered that.
I thought the squinty eyes were supposed to be Asian. It worked so well as just a short joke. In fact, a lot of movies here are just that. Everyone was drawn in such a funny manner. At least it wasn't Brock kicking him.