The rocks which wash up onto Unova's beaches at high tide are known for containing countless rare items, most of which are prized by pokemon trainers. Although these rocks are too sturdy to be opened by human hands, many pokemon can be trained to smash them, so trainers with the right pokemon see any travel through a beach as an opportunity to make a significant profit.

Dwebble, who live on these beaches, often hollow out local rocks for use as shells, and because of their tendency to hide their bodies in the sand, it is virtually impossible to distinguish a rock containing a Dwebble from one containing precious items. Trainers do not intentionally seek battles with the Dwebble, for a Dwebble shell has already been stripped of any useful items to make room for its resident, but these constant cases of mistaken identity see Dwebble and humans locked in a seemingly perpetual battle. Dwebble, after all, spend a great deal of time turning these rocks into homes, and their anger at seeing them smashed quite understandably leads to them fighting back, even against pokemon so much stronger that they can claim no realistic chance of victory.

The Dwebble are not endangered as a species from these smashes, for new rocks come in with every tide, ensuring both their continued targeting and their survival. But these pokemon lead very frustrated lives, and only the warm embrace of a trainer and their help in crafting a new rocky shell can allow them the security which humans and many pokemon take for granted. Once Dwebble realize that their shell is no longer in danger, these pokemon become extremely friendly and instantly tame, but until that realization comes they view all of humanity, including their trainers, with a bitter and impotent rage.