Barbaric Machine Clan Gaiark

The Barbaric Machine Clan Gaiark (蛮機族ガイアーク Bankizoku Gaiāku?, [α]) are the fictional antagonists from Engine Sentai Go-onger. They are machine-men from the Machine World whose numbers had been are scattered during their war with the Engines. By the end of the series, only Batcheed remains at large.

Pollution Ministers
Originally thought to be the last of the Gaiark, the three Pollution Ministers end up on Earth and decide to pollute it to serve as an ideal paradise for them. They based themselves at Hellgaille Palace (ヘルガイユ宮殿 Herugaiyu Kyūden?), located on an isolated island in the middle of the sea. Powering the entire place is the Deus Haguru Magear (デウス・ハグル・マギア Deusu Haguru Magia?), a big gear in their command chamber which is an inexhaustible energy source that Yogostein brought with him from Machine World. The gear's power is used Yogoshimacritein to create an army of Barbaric Dohma until the primary Go-ongers break it, causing Hellgaille Palace to self destruct and sink into the sea.

Arelunbra Family
Preceding the Gaiark as the Engines' mortal enemies, the Barbaric Machine Clan Arelunbra Family (蛮機族アレルンブラ家 Bankizoku Arerunbura Ke?) were sea-based androids terrorized Machine World with their Water Pollution Machine Knights (害水機士 Gaisui Kishi?) before their leader Nigorl left for the Human World and the Arelunbra faded into legend.