Pierre
From Pierre. Every cook's dream wrapped up in a perfect bundle of metal and bolts. Too bad what he cooks up isn't suitable for humanoid consumption. According t... Mechanical type. Extreme sadness--Pierre is not coming in 5.2. I asked Cory Stockton on twitter after seeing he was gone from the Pet Journal and he confirmed Pierre was pulled.
Pierre is an Engineering-crafted battle pet obtained by learning the schematic from 
Schematic: Chief Engineer Jard's Journal, a drop from any mob above level 88.
Guide awaiting review
Farm the Journal Schematic
Kill any mob above level 88 to obtain Schematic: Chief Engineer Jard's Journal, which is described as a fairly common drop. This schematic also teaches the recipes for the 
Sky Golem, 
Rascal-Bot, 
Jard's Peculiar Energy Source, and a Cooking Bag.
Craft Pierre as Engineer
Once you have learned the schematic, craft Pierre using your Engineering profession. The crafted Pierre is bind-on-pickup, but can be caged after crafting and traded or listed on the Auction House.
Tips
Much like
Lil' Ragnaros, Pierre can be used as a cooking station, allowing you to cook without a campfire or other cooking station.Pierre functions as a debuff-oriented battle pet, with moves that lower enemy accuracy, apply a sleep effect, apply a bleed, and cleanse debuffs from itself — making it well-suited to teams that focus on fast beatdowns rather than status effects.
