Kiritsugu Emiya (衛宮切嗣, Emiya Kiritsugu?) is a character from the Japanese visual novel and anime series Fate/stay night by TYPE-MOON.

Kiritsugu saved Emiya Shirō during the aftermath of the Fourth Holy Grail War in Fuyuki City, later becoming the boy's foster father. Prior to this, Kiritsugu had dedicated most of his life to becoming what he called a 'Hero of Justice', a defender of humanity. Kiritsugu was also a magus, although he never made any serious attempts to train the unskilled Shirō in his craft. He dies several years prior to the beginning of Fate/Stay Night.

The voice acting for Kiritsugu is done by Rikiya Koyama in Japanese and Kirk Thornton in English.

Source: Wikipedia