watch 01:36 The Loop (TV) Do you like this video? This article is about the pet rock. You may be looking for the French boy. Pierre was Buster's pet rock. He drowned in the ocean when he came out of Buster's pocket. Buster expressed that he had wished he had taught him how to swim. Appearances Arthur "Shelter from the Storm" (Mentioned only) Retrieved from "https://arthur.fandom.com/wiki/Pierre_(rock)?oldid=345766" Categories: Objects Pets A to Z Characters Community content is available under CC-BY-SA unless otherwise noted.