Scaramucci

Skara: You finally managed to find this place. Congratulations.
Paimon: So you're one of the Harbingers of Fatui... like Signora and Childe?
Skara: Signora? Childe? Hmm... I didn't know you knew my two most unreliable colleagues.
skara: Number Six of the Harbingers of Fatui, the storyteller in person. Pleased to meet you, renowned traveler

Scaramuccia is a doll created by Ei after the loss of her sister during the fall of Kaenri'ah. He was created to test the capabilities of doll creation and to become the vessel for the "Heart of God". 2

But due to the fragility of her creation, Ei gave up the idea of ​​putting the Heart into it, and she gave it to her familiar, Yae Miko. Ei's original plan was to just get rid of it, but perhaps she thought that was too cruel, so she decided to just seal the power inside its body. 2

After some time, Scaramuccia woke up from his sleep, having lost all hope and motivation for anything, he wandered around Inazuma. At this point, the prototype ceased to be a puppet, he became the Wanderer. 3

During his journey, he met many people with very different hearts: kind, decent, unwavering and tender… And he also wanted to have his own heart. This was his cherished desire. 2

In the distant future, he received his heart, but it was a fake, filled with lies and deception. An artificial heart, apparently created by Fatui scientists. 2

A hard fate, three betrayals and the eternal burden of loneliness made him who he became. The first betrayal was Ei leaving him. The second betrayal was Katsuragiri, who gave her life for Scaramuccia. The third betrayal was the death of a boy, Scara's friend, due to a serious illness. 2

After all this time, he experiences a fall as an unsettled "new archon" (Seki no Kami), and finally decides to erase himself from the minds of everyone who ever knew him.
Scaramuccia is a doll created by Ei after the loss of her sister during the fall of Kaenri'ah. He was created to test the capabilities of doll creation and to become the vessel for the "Heart of God". 2

But due to the fragility of her creation, Ei gave up the idea of ​​putting the Heart into it, and she gave it to her familiar, Yae Miko. Ei's original plan was to just get rid of it, but perhaps she thought that was too cruel, so she decided to just seal the power inside its body. 2

After some time