Born into the affluent Ragnvindr Clan, Diluc is the current owner of the Dawn Winery and a nobleman of high esteem in Mondstadt. While a past incident caused him to split ways with the Knights of Favonius, he continues to protect Mondstadt in his own way. Being praised by his father made him happier than fame and anything else, and Crepus told Diluc to be faithful in his duties. After his father's death, he has been suppressing himself.