The Barbaric Machine Beasts (蛮機獣, Bankijū) are monsters created to pollute the Earth. They are each separated into one of three types that are under the Pollution Ministers: Savage Ground (害地, Gaichi), Savage Sea (害水, Gaisui), and Savage Sky (害気, Gaiki). The Barbaric Machine Beasts are infused with a special energy called Bikkurium (ビックリウム, Bikkuriumu) that enlarges them in a process called Industrial Revolution (産業革命, Sangyō Kakumei), however this process can be activated while the Barbaric Machine Beast is still alive. Before they go on a mission,they usually say "righty-o"