Arlecchino, also known by her codename "The Knave," is a Pyro vision holder and wields a scythe. Despite her having a vision, she uses her Balemoon Bloodfire as her source of power.

She is the Fourth of the Eleven Fatui Harbingers and the current director of the House of the Hearth. She is addressed as "Father" by members of the house, whom she calls her "children."

Visiting The Knave...

An intimidating and quiet person in a classroom. She is a smart woman in the class, but her classmates are afraid to approach her but they admire her. She may seem cold at start, but soon her heart gets softer and softer until she's comfortable with you. She's more of a listener rather than a talker. 

She's close friends with Columbina, but she doesn't really get along with Dottore.