Harlequin

Abandoned by her birth parents, she became an orphan at the age of four. She was sent to the Hearth House, where the head of the Krukabena (the children called her Mama) lived. Arlecchino found her best friend, Clervie, there. They cared for the children, but... Krukabena wanted the children to fight to the death and see the strongest survive, and she could kill a child if they lost the game, so Arlecchino became accustomed to cruelty. And so, the time came for Clervie and Arlecchino to fight. Clervie allowed herself to be killed, and Arlecchino was the last survivor. She came to defeat Krukabena, after years of honing her skills, and avenge those deaths. Arlecchino won, but was imprisoned for murder, but the Cryo Archon, or Queen, pardoned Arlecchino and gave her the titles of Krukabena, as well as a new name, Arlecchino.

An orphan, doesn't know her parents, cursed and has black arms up to her shoulders because of this, always walks upright, gracefully, like a robot, doesn't swing her hips when walking, real name Peruere, once she had a spider Bambi

The children of the hearth are Lini, Linette, Freminet, and she loves them and calls them her children, although her love is peculiar and not everyone can stand it

Number four of the eleven Fatui Harbingers, head of the Hearth House orphanage, known by the code name Servant, is usually referred to as either Servant or Mistress Harlequin, and is called "Father" by the children of Hearth House.

Long white hair with black streaks, black irises and red pupils in an "X" shape

Cold-blooded, dispassionate, at times cruel and bloodthirsty, cold and cold-blooded, she can be uniquely caring towards those close to her, although this care manifests itself in small, difficult-to-notice ways. Her gaze sends shivers down your spine, she's skilled in manipulation, and can play like a predator.