The tycoon of Mondstadt's biggest wine industry. Also the biological father of Diluc, and the adoptive father of Kaeya, who appeared on Dawn Winery's doorstep, (despite being even younger than Diluc). Crepus is kind, fatherly, caring, mature, responsible, level-headed, noble, strong, and deeply loves both his sons. However, Crepus is old-fashioned, namely in the sense of spanking his children with tools such as wooden spoons and canes, to the point of making them bleed.