Toosaka, Tokiomi

Tokiomi is the father of Toosaka Rin and Matou Sakura, two of the heroines from Fate/stay night. As a member of the Toosaka family, he entered the Fourth Holy Grail War as the Master of Archer (Gilgamesh). Kiritsugu Emiya identifies Tokiomi as one of the two most threatening magi involved in the war after assessing all the Masters involved.

Tokiomi is an arrogant and manipulative man who strives, as all powerful magi do, to reach Akasha, or "the root of all knowledge." Although he cares for his daughters and his wife, he appears to be oblivious to the problems and pain they face due to his decisions.

(Source: Type-Moon Wiki)

Note: "Tokiomi Toosaka" is the correct spelling of this name per Hepburn romanization, which is used as a MyAnimeList standard.