Gradivus, the Headless Emperor (Japanese: 首無皇帝グラデウス, Kubinashi Kōtei Guradeusu) is a Tyrant in Xenoblade Chronicles X. It is a member of the Millesaur family. It can be found at level 71 at the North Coast in Oblivia after completing Chapter 12. It can summon Parasite Gerrids for assistance. When it does so, it changes the attribute of the projectile arts it uses. While Gradivus may not be as offensively capable as higher-leveled Tyrants, it does have the largest amount of HP of any enemy.