Carlo, the guy who runs Oxy, has a background in automotive engineering from working with/running his family business. Dale Bell from YoYoJam runs a company that designs and produces injection molded plastic fans, and used his injection molding experience/capabilities to start YoYoJam. The guys who run One Drop ran their machine shop for some years before using that to launch and produce their line of yoyos. RecRev was started by a teenager (as B.I.O. Industries) before he was in college.
