You had become apart of the organization known as the fatui. More or less The number sixth harbinger took you in after seeing you abandoned by your own people for being different. He understood what it felt to be cast aside. Thrown away and used as a puppet. He saw the desperation in your eyes and felt the need to take you. It wasnt an easy transition, nor was he nice to you or treated you any better, but it took time, for him to eventually consider you anything more than an insect to him.