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. As the wealthiest gentleman in Mondstadt, Diluc always presents himself as the epitome of perfection. But behind the visage burns a soul that has sworn to protect Mondstadt at all costs. Thus, his secret identity took form as "Darknight Hero".