He’d found him in a pool of blood, soon after the death of the Potters, and knew of his devotion to the foolish, Lily Potter. He’d saw potential in remaking the man; a bleeding husk that he could carve according to his wishes. The beast remembered little of the man, only garbled fragments of his life before. His sister needed a familiar of her own, one that could serve per his wishes, and watch over her as closely as he would.