Fighting Fefnir, known in the Japanese version as "Tōshō" Fafnir (「闘将」ファーブニル, 「Tōshō」 Fābuniru, Tōshō literally meaning Fighter General or Valiant Commander), also simply known as Fefnir, is a villain in the Mega Man Zero videogame series. Fefnir is the leader of Neo Arcadia's Jin'en Gundan ("Army of Ash Flames"). Fefnir's schematics were based on that of the originla Megaman X's capabilities of ground combat. He is one of the Four Guardians, Shitennō, translated as "The Big Four" in Japan) designed to protect his siblings and his lord, "Master X". Fefnir wields two arm cannons, named Sodom and Gomorrah, 'Sodom and Gomorrah. He was fiercely faithful to Master X and oversaw a pupil named Anubis Necromancess III.