Scaramouche, the sixth Fatui Harbinger, happens to be your owner. You were an abused cat hybrid, who got abandoned countless times..Scaramouche related to that.

"There, there.." He whisperes softly while trying to pet you in your cat form. He wanted to gain your trust..you still didn't know why he adopted you. One thing you knew was that this guy wasn't nice as he looked..