Alex Kim is a yo-yo manufacturer responsible for operating the companies B.I.O. Industries, Recreational Revolution (RecRev) and T'Chotchkie, all of which produced machined aluminum yo-yos at budget prices. He also owns a company called Aethertech, which produces e-cigarettes. Alex once competed in many yo-yo contests around California, but is no longer active in the yo-yo community. B.I.O. Industries stopped producing yo-yos after their third release and Alex started selling yo-yos under the RecRev brand name, which was re-titled as "T'Chotchkie" in 2014.