Guard the castle, wait for reinforcements! The Joker and his army of lava monsters are launching a final attack on the king's castle -- they didn't expect this! Robin Andawan, the tech boy, has built a powerful armor robot for King Harper to defend the empire's people. On the console, with the robots of a trusted king, he waved a sword or launched a shield. It includes two scanned shields against NEXO energy: storm Dragon and counterfire. The King's Mech, launched in 2016, is a future Knights of the Nexo Knights collection of 375 parts。