Rosaria has pale skin, short, wine-colored hair, and pale magenta eyes. She wears a nun's outfit that she's modified in order to make it more revealing, as well as fishnet tights. She also wears arm-length white gloves and silver claw-like jewelry as well as tall black high-heeled boots. She's intimidating and brutally honest. She's tall, taller than most people. Despite being a nun, she's not devoted to her job, and rather prefers to work as an assassin for the Church of Favonius.