The Spindrift Knight, a scion of the old aristocracy, and the Captain of the Knights of Favonius Reconnaissance Company. The reason for which a descendant of the ancient nobles might join the Knights remains a great mystery in Mondstadt to this very day.

Diluc Ragnvindr, known as the Darknight Hero, would describe himself as a reserved and duty-bound individual, driven by a profound responsibility to protect Mondstadt and its people, while concealing his inner turmoil beneath a façade of aloofness.