Kido Mitsumasa

Japanese name:

城戸 光政

Foster-grandfather of Saori who adopted her and took her to Japan after finding a dying Sagittarius Aiolos in Sanctuary.
In the manga, it was revealed that he was actually the birth father of all the orphans he sent around the world to be trained as Saints. In the anime, he merely took the children from various orphanages, and sent them for their training. Just before he died, he told Saori all the truth regarding the encounter with Aiolos in Sanctuary and her divine origins and purpose of her birth in this era.

Seiyu: Miyauchi Kouhei

Wikipedia