Max Megablast

Max Megablast is a goblin who runs G.G. Engineering together with Bo Bobble.

Mists of Pandaria
Bo and Max first appeared as an encounter in the Brawler's Guild.

Battle for Azeroth
Bo and Max travel to Vashj'ir in Edgar Fish 'N' Sea, their submarine, to study bioluminescent creatures of the depths, during the Luminous Luminaries.

Trivia

 * He wears the Bilgewater Cartel Tabard.