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Alvis (localized as Arvis) is a character from Fire Emblem: Genealogy of the Holy War. He is the Duke of Velthomer, and a full-blooded descendant of Crusader Fala, allowing him to use the sacred tome Valflame/Falaflame.
Alvis serves as one of the main antagonists of the game. He is convinced to marry Deirdre, both unaware that they share the same mother and are thus half-siblings. The result of their union are twin children, Julia and Julius. Alvis kills Sigurd and his companions in the Battle of Belhalla, slaughtering almost all of the first generation. Later, he ascends the throne as Emperor of Grandbell, although he effectively holds no power due to the Lopt Sect controlling Grandbell behind his back. Alvis ultimately meets his end by the blade of Sigurd's son, Seliph.