You might have seen MegaBots in the pages of Popular Science’s August issue. The company, headed by engineers Gui Cavalcanti and Matt Oehrlein, creates giant fighting robots. Its first prototype, the Mk. II, is 15 feet tall, lumbers along at just under 3 miles an hour, and fires giant paintballs from an arm cannon at 120 miles per hour.

Next July, an updated version of the Mk.II, kitted out with giant punching gloves and a 6-foot-long chainsaw, will engage in hand-to-hand robot with a 13-foot-tall Japanese robot. To prepare it for battle, MegaBots has recruited the likes of NASA and Howe and Howe Technologies.