Rosaria

Rosaria is a somewhat intimidating woman who has a rather unorthodox idea of piety. Kaeya describes her as someone who is "honest with herself". She dislikes topics that bore her and having to work overtime. Fischl overheard her cursing out someone in Barbatos' name and takes it as a sign of Rosaria's piety, an interpretation Oz doubts. Like Fischl, her intuition is very keen, as she's well aware that Diluc, Kaeya, Venti and Albedo are more than what they appear to be.

Despite her position in the church, Rosaria is the least devout; she is always guaranteed to skip all church activities when possible and the first one to leave if she is forced to attend.[2] While she does recite prayers, she does not remember Barbatos' name due to her lack of devotion, frequently mispronouncing his name.[3]

Secretly, she acts as a purveyor of justice for the Church, investigating potential threats to Mondstadt and eliminating them if necessary. She is particularly skilled in killing, having been taught by her former "family", a group of bandits before they had been wiped out by the Knights of Favonius. Due to being offered a chance for redemption by Varka, Rosaria sees herself differently to the people of Mondstadt, and is indebted to them for their unselfish warmth and goodwill.

A sister in Mondstadt's Church of Favonius.

At a glance, she appears to be a usual member of the clergy, but after observing her behavior, you would find she is anything but.

Her reverence for the gods is less than that of even the average citizen of Mondstadt, and she never participates in the activities of the Church.

Rosaria is an unusual loner who is a sister of the Church in name only.

But don't forget that wherever light may reach, there will also be shadow.

She is usually blunt and sarcastic, and doesn’t hold much patience for small talk. She prefers to be on her own, and is strong-willed and independant. She frequents the tavern, and is a casual smoker.

Rosaria uses the tall female model. She has ghostly pale gray skin, pale magenta eyes with narrow white pupils, and choppy wine-colored hair cut short in the back with a shoulder-length fringe and some strands of her bangs colored a darker red.

She comes, goes, and acts in solitude, and if she were ever to make an appearance in the Cathedral, it would be to smoke in the rearmost pew.

Such a lone wolf is Rosaria that perhaps she should be considered a clergywoman in name only.