Xu Fu, Class Name Alter Ego, is an Alter Ego-class Servant summoned by Ritsuka Fujimaru in the Grand Orders of Fate/Grand Order. She also appears as an Archer-class Stray Servant and a Caster-class Servant of Specimen E in the Traum Singularity. An alchemist who lived during the Qin dynasty, during which Qin Shi Huang requested them to seek him the key to immortality. For the second expedition, Xu Fu was granted an entire fleet of soldiers, sailors, and 3,000 virgin boys and girls. However, Xu Fu never returned from the voyage with many speculating what happened to them. She comments on this as she is surprised that the history books write her as being a male, thinking that this is some petty revenge by some bureaucrats just because Emperor Qin had the audacity to hire a woman to fulfill a task. Granted, her clothing does make her look rather boyish, making it easy to mistake her as male.