Hilmes (ヒルメス) is the main antagonist of The Heroic Legend of Arslan and a playable character in Arslan: The Warriors of Legend. He is the lost prince of the Pars kingdom, and a blood heir to the throne. Since his face may prematurely reveal his identity, he covers it with a mask which led to his popular pseudonym "Lord Silvermask" (銀仮面卿). His main goal is to obliterate Andragoras's influence and reclaim the kingdom for himself. To accomplish this, he feigns loyalty to their rival kingdom, Lusitania, and manipulates or conquers any obstacle in his path.