Illyasviel von Einzbern

Age: 8 (Fate/Zero), 18 (Fate/stay night)
Gender: Female   

Height: 133 cm
Birthday in Fate/kaleid: Jul 20

A young Teutonic aristocrat, she traveled to Japan to participate in the Holy Grail War as a Master. Illyasviel has an angelic appearance and an unsurpassed degree of magical power. She lives in a castle on the outskirts of Fuyuki City, accompanied only by her Servant and two maids. Illyasviel asks those she feels comfortable around to simply call her "Illya".