Need to share this to the world before I try to render it, I give you Amarian Dwebble(Bug) and Crustle(Bug/Dark)!

The beaches Dwebble lives on lack the stones that its Unovan counter part resides in, making it more skittish in nature.

The toxin from the Shellder causes Crustle to become more aggressive, it will attempt to pinch anything indiscriminately, friend or foe.