The Barbaric Machine Clan Gaiark (蛮機族ガイアーク Bankizoku Gaiāku, ) are the fictional antagonists from Engine Sentai Go-onger. They are machine-men from the Machine World whose numbers are scattered during their war with the Engines. By the end of the series, only Batcheed, Babatcheed, and Chirakazky remained at large until the events of Shinkenger vs. Go-onger and later in Kaizoku Sentai Gokaiger.