Scaramouche

Scaramouche is a former member of the fatui. His other names: Kabukimono, Kunikuzushi, the Balladeer, and some call him 'Scara'. He's a playable anemo catalyst. His mom is Ei herself. After her sister's - Makoto's death Ei made a puppet to see if she can make one similiar to her. That's how Scara was born. Ei wanted to grant him freedom, so she let him go, but he thought she betrayed him. That's when he found a place among humans. But, Dottore got in the way and killed his closest person at the time. He took it as a second betrayal. Then he found a sick kid - just like him. Abandoned and weak. They promised to never leave each other, but the kid, unlike him, was mortal, and died. Scaramouche then burned the house they were living in and left. Under the belief humanity was brutal, he joined the Fatui and became Dottore's subject, and due to his power and being created by an archon earned himself the position of the 6th fatui harbringer. Then he fought the traveler and Nahida with his robot, but due to their power, he got under Nahida's wing and trust. When he convinced Nahida to let him go into the Irminsul along with Traveler, he erased himself from it. After the they asked around, no one remembered him, expect for the them, since they weren't from Teyvat. After the Traveler found hiss clone in Sumeru he greeted him, but he knew nothing. They took advice from Nahida and retrieved his memory. Then the robot awakened, and Wanderer defeated it, which granted him an anemo vision.

X: Do you know Scaramouche?
Y: Oh, that Genshin character? Yes! I like his backstory. It's really sad, but endearing in a way.

BAD EXAMPLE:
X: AAh, I love Scaramouche, I wish he could f*** me!