Vilem, the Gold-Scaled (Japanese: 金鱗のヴィレーム, Kinrin no Virēmu) is a Tyrant in Xenoblade Chronicles X. It is a member of the Aetrygon family. It can be found at level 45 in Oblivia in southeastern Lake Basel (it hides underwater until approached). Defeating it is required to complete the eponymous basic mission Vilem, the Gold-Scaled. It must be defeated for Squad Mission No.15.