Barbara, the Deaconess of the Knights of Favonius, is a shining starlet beloved by the people of Mondstadt. Her Hydro power is the best remedy for a wound, just like her soothing singing and dancing is solace to a weary heart. "I just want to see Barbara to make my day a bit brighter!" —— the usual excuse of those accused by the nuns of loitering around the cathedral doors.