Arturia Giallo is a distant cousin of Federico Giallo the Executor who is noted for her musical talents since her childhood. She was raised up together with Federico since childhood as she is the daughter of Federico's father's brother when Federico's parents died in action, and Federico had been treating her as a sisterly figure. However, Arturia possesses a sociopathic and sadistic character.
Arturia mastered a musical Arts through her cello that can be used to manipulate emotions such as worsening one's negativity, mind control, and even inciting someone's suicide intention.
