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Assassin (アサシン)Assassin's identity is that of the legendary Persian "Old Man of the Mountain," Hassan-i-Sabah the leader of al-Assasīn.
Assassin serves as the Servant of Kirei Kotomine in the 4th Holy Grail War, his unique trait being that he can manifest as multiple entities at once.
Fate/Zero is a roller-coaster of an anime, filled with fantasy, drama, comedy, tragedy, but most of all, compelling characters. But just how historically accurate are the "Heroes of Legend" in this anime? Find out now in this detailed guide to the background of our favorite servants!