Land Pollution Vice-Minister Hiramechimedes (害地副大臣ヒラメキメデス Gaichi Fuku Daijin Hiramekimedesu) is Yogostein's subordinate and Gaiark's top tactical genius, and a more serious threat than the Pollution Ministers. Whenever inspired with a plan, the 3 lights on his head flash as he says "Pok-Pok-Ping!" (ポク・ポク・ピーン! Poku-Poku-Pīn!) with the sextant, and protractor on his chest body indicating the plan's greatness. Hiramechimedes is feared by the Engines, making them frightened husks of their former selves in his numerous victories which they eventually overcame.